CN114124115A

CN114124115A - Radio frequency front-end device, radio frequency transceiving system and communication equipment

Info

Publication number: CN114124115A
Application number: CN202111512098.5A
Authority: CN
Inventors: 王国龙
Original assignee: Guangdong Oppo Mobile Telecommunications Corp Ltd
Current assignee: Guangdong Oppo Mobile Telecommunications Corp Ltd
Priority date: 2021-12-07
Filing date: 2021-12-07
Publication date: 2022-03-01
Anticipated expiration: 2041-12-07
Also published as: CN114124115B

Abstract

The application discloses a radio frequency front-end device, a radio frequency transceiving system and a communication device, which are used for a diversity antenna radio frequency link or a main set antenna and a diversity antenna radio frequency link, and can support a non-independent networking mode without needing an external multi-mode multi-frequency power amplifier device, thereby improving the integration level and reducing the occupied main board area; moreover, the cost is reduced due to the improvement of the integration level of the device; moreover, through integration, the wiring of power supply, transmission control and the like is reduced, the complexity of single-board layout is reduced, and the performance of a radio frequency transceiving system and communication equipment is improved.

Description

Radio frequency front-end device, radio frequency transceiving system and communication equipment

Technical Field

The present application relates to, but not limited to, radio frequency technology, and more particularly, to a radio frequency front end device, a radio frequency transceiver system, and a communication device.

Background

With the development and progress of the technology, the 5G mobile communication technology is gradually beginning to be applied to electronic devices. With the increase of communication network systems, terminal equipment must support communication requirements under various network systems of 2G, 3G, 4G and 5G; the space of the main board PCB is not greatly increased due to the increase of the demand, which is limited by the restriction of the terminal device on the size, and this causes the space layout and wiring of the main board PCB to be very tight.

In order to support the endec, a multi-mode multi-band Power Amplifier (MMPA) device needs to be additionally used, which undoubtedly gives snow frost to the problem that the space layout is very tight originally, and increases the complexity of the PCB layout and the cost. Wherein ENDC is an abbreviation of EUTRA NR Dual-Connectivity, E represents E-UTRA, belongs to the air interface of 3GPP LTE, and is the eighth edition of 3 GPP; n represents N radio 5G; d denotes LTE and 5G dual connectivity. Endec can be understood as the mutual compatibility of 4G and 5G dual connections.

Disclosure of Invention

The application provides a radio frequency front-end device, a radio frequency transceiving system and a communication device, which can improve the integration level of the radio frequency device, save the area and improve the product performance.

The embodiment of the application provides a radio frequency front-end device (a first radio frequency front-end device) which is used for a diversity antenna radio frequency link and is provided with an intermediate frequency transmitting port and an intermediate frequency auxiliary transmitting port; the radio frequency front end device comprises:

the first transmitting circuit is connected with the intermediate frequency transmitting port and the intermediate frequency auxiliary transmitting port and is used for performing power amplification processing on a first intermediate frequency signal from the intermediate frequency transmitting port and outputting the first intermediate frequency signal to an external circuit through the intermediate frequency auxiliary transmitting port;

the first intermediate frequency band signal is a signal of one of preset intermediate frequency bands in a non-independent networking mode.

An embodiment of the present application further provides a radio frequency transceiving system (a first radio frequency transceiving system), including: the antenna comprises a first antenna, a second antenna, a third antenna, a fourth antenna, a radio frequency transceiver, an external circuit, a second combiner, a fourth combiner, a first filter, a second filter, a third filter, a radio frequency MHB PA Mid device and any one of the first radio frequency front end device and the second radio frequency front end device; wherein the content of the first and second substances,

the radio frequency transceiver is connected with the first antenna through a radio frequency MHB PA Mid device to form a transmitting channel of the intermediate frequency band signal at least comprising a second intermediate frequency band signal and a main set receiving channel of the intermediate frequency band signal at least comprising the second intermediate frequency band signal;

the radio frequency transceiver is connected with a second antenna through a first radio frequency front-end device, a radio frequency MHB PA Mid device, an external circuit, a first filter and a second combiner to form a transmitting channel of a first intermediate frequency band signal, a main set receiving channel of the first intermediate frequency band signal and a main set MIMO receiving channel of a second intermediate frequency band signal;

the radio frequency transceiver is connected with the third antenna through the first radio frequency front-end device to form a diversity receiving channel of the medium and high frequency band signal at least comprising the second medium frequency band signal;

the radio frequency transceiver is connected with a fourth antenna through a first radio frequency front-end device, a second filter, a third filter and a fourth combiner to form a diversity receiving channel of a first intermediate frequency band signal and a diversity MIMO receiving channel of a second intermediate frequency band signal;

the first intermediate frequency band signal and the second intermediate frequency band signal are signals of two different preset intermediate frequency bands in a non-independent networking mode.

An embodiment of the present application further provides a communication device, including any one of the above first radio frequency transceiving systems.

The first radio frequency front-end device provided by the embodiment of the application is used for a diversity antenna radio frequency link, a non-independent networking mode can be supported without an external multi-mode multi-frequency power amplifier device, the occupied area of a Printed Circuit Board (PCB) is reduced, the integration level of a radio frequency device is improved, the cost is reduced, wiring such as power supply and transmission control is reduced after integration, the complexity of single-board layout is reduced, and therefore the performance of a radio frequency transceiving system and communication equipment is improved.

The embodiment of the application provides another radio frequency front-end device (a second radio frequency front-end device) which is used for a diversity antenna radio frequency link and is provided with an intermediate frequency transmitting port, an intermediate frequency auxiliary receiving and transmitting port and an intermediate frequency auxiliary receiving port; the radio frequency front end device comprises:

the first transmitting circuit is connected with the intermediate frequency transmitting port and the switching circuit and is used for amplifying the power of the first intermediate frequency band signal from the intermediate frequency transmitting port and outputting the amplified signal to the switching circuit;

the switching circuit is connected with the first transmitting circuit, the intermediate frequency auxiliary receiving and transmitting port and the intermediate frequency auxiliary receiving port and is used for outputting the first intermediate frequency band signal from the first transmitting circuit from the intermediate frequency auxiliary receiving and transmitting port and outputting the first intermediate frequency band signal received by the intermediate frequency auxiliary receiving and transmitting port through the intermediate frequency auxiliary receiving port;

An embodiment of the present application further provides a radio frequency transceiving system (a second radio frequency transceiving system), including: the antenna comprises a first antenna, a second antenna, a third antenna, a fourth antenna, a radio frequency transceiver, a second combiner, a fourth combiner, a first filter, a second filter, a third filter, a radio frequency MHB PA Mid device and any one of the second radio frequency front end devices; wherein the content of the first and second substances,

the radio frequency transceiver is connected with a second antenna through a second radio frequency front-end device, a radio frequency MHB PA Mid device, a first filter and a second combiner to form a transmitting channel of a first intermediate frequency band signal, a main set receiving channel of the first intermediate frequency band signal and a main set MIMO receiving channel of a second intermediate frequency band signal;

An embodiment of the present application further provides a communication device, including any one of the above-mentioned second radio frequency transceiving systems.

The second radio frequency front-end device provided by the embodiment of the application is used for a main antenna and a diversity antenna radio frequency link, a non-independent networking mode can be supported without an external multi-mode multi-frequency power amplifier device and a preset frequency band duplexer, the occupied area of a PCB (printed circuit board) is reduced, the integration level of a radio frequency device is improved, the cost is reduced, in addition, after integration, wiring of power supply, transmission control and the like is reduced, the complexity of single-board layout is reduced, and therefore the performance of a radio frequency transceiving system and communication equipment is improved.

The embodiment of the present application further provides a radio frequency front end device (a third radio frequency front end device), which is used for a diversity antenna and a main diversity antenna radio frequency link, and is provided with an intermediate frequency transmitting port, at least one intermediate and high frequency receiving port, an intermediate frequency auxiliary receiving and transmitting port, and an intermediate frequency auxiliary receiving port; the radio frequency front end device comprises:

the switching circuit is connected with the first transmitting circuit, the first receiving circuit and the intermediate frequency auxiliary receiving port, and is used for outputting the first intermediate frequency band signal from the first transmitting circuit from the intermediate frequency auxiliary receiving and transmitting port, outputting the first intermediate frequency band signal received by the intermediate frequency auxiliary receiving and transmitting port to the first receiving circuit, and separating a receiving and transmitting path according to the receiving and transmitting direction of the first intermediate frequency band signal to realize single-antenna two-way communication;

the first receiving circuit is connected with the medium-high frequency receiving port and the switching circuit and used for amplifying the first medium-frequency band signal from the switching circuit and outputting the first medium-high frequency band signal to the medium-high frequency receiving port;

An embodiment of the present application further provides a radio frequency transceiving system (a third radio frequency transceiving system), including: the antenna comprises a first antenna, a second antenna, a third antenna, a fourth antenna, a radio frequency transceiver, a second combiner, a fourth combiner, a first filter, a second filter, a third filter, a radio frequency MHB PA Mid device and any one of the third radio frequency front-end devices; wherein the content of the first and second substances,

the radio frequency transceiver is connected with a second antenna through a third radio frequency front-end device, a radio frequency MHB PA Mid device, a first filter and a second combiner to form a transmitting channel of a first intermediate frequency band signal, a main set receiving channel of the first intermediate frequency band signal and a main set MIMO receiving channel of a second intermediate frequency band signal;

An embodiment of the present application further provides a communication device, including any one of the above third radio frequency transceiving systems.

The third radio frequency front-end device provided by the embodiment of the application is used for a main antenna and a diversity antenna radio frequency link, a non-independent networking mode can be supported without an external multi-mode multi-frequency power amplifier device and a preset frequency band duplexer, the occupied area of a PCB (printed circuit board) is reduced, the integration level of a radio frequency device is improved, the cost is reduced, in addition, after integration, wiring of power supply, transmission control and the like is reduced, the complexity of single-board wiring layout is reduced, and therefore the performance of a radio frequency transceiving system and communication equipment is improved.

Additional features and advantages of the invention will be set forth in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. The objectives and other advantages of the invention will be realized and attained by the structure particularly pointed out in the written description and claims hereof as well as the appended drawings.

Drawings

The accompanying drawings are included to provide a further understanding of the claimed subject matter and are incorporated in and constitute a part of this specification, illustrate embodiments of the subject matter and together with the description serve to explain the principles of the subject matter and not to limit the subject matter.

Fig. 1 is a schematic structural diagram of a first embodiment of a first rf front-end device in an embodiment of the present application;

fig. 2 is a schematic structural diagram of a second embodiment of a first rf front-end device in an embodiment of the present application;

fig. 3 is a schematic structural diagram of a third embodiment of a first rf front-end device in an embodiment of the present application;

fig. 4 is a schematic structural diagram of a first embodiment of a first LFEM device in an embodiment of the present application;

fig. 5 is a schematic structural diagram of a second embodiment of a first LFEM device in an embodiment of the present application;

fig. 6 is a schematic structural diagram of a first embodiment of a first rf transceiver system in an embodiment of the present application;

fig. 7 is a schematic structural diagram of a second embodiment of a first rf transceiver system in an embodiment of the present application;

fig. 8 is a schematic structural diagram of a third embodiment of a first rf transceiver system in an embodiment of the present application;

fig. 9 is a schematic structural diagram of a first embodiment of a second rf front-end device in an embodiment of the present application;

fig. 10 is a schematic structural diagram of a second embodiment of a second rf front-end device in an embodiment of the present application;

fig. 11 is a schematic structural diagram of a third embodiment of a second rf front-end device in an embodiment of the present application;

fig. 12 is a schematic structural diagram of a first embodiment of a second LFEM device in an embodiment of the present application;

FIG. 13 is a schematic diagram of the structure of a second embodiment of a second LFEM device in an embodiment of the present application;

fig. 14 is a schematic structural diagram of a first embodiment of a second rf transceiver system in an embodiment of the present application;

fig. 15 is a schematic structural diagram of a second embodiment of a second rf transceiver system in an embodiment of the present application;

fig. 16 is a schematic structural diagram of a third embodiment of a second rf transceiver system in the embodiment of the present application;

fig. 17 is a schematic structural diagram of a first embodiment of a third rf front-end device in an embodiment of the present application;

fig. 18 is a schematic structural diagram of a second embodiment of a third rf front-end device in an embodiment of the present application;

fig. 19 is a schematic structural diagram of a third embodiment of a third rf front-end device in an embodiment of the present application;

fig. 20 is a schematic structural diagram of a third rf LFEM device in an embodiment of the present application;

fig. 21 is a schematic structural diagram of a first embodiment of a third rf transceiving system in the present embodiment;

fig. 22 is a schematic structural diagram of a second embodiment of a third rf transceiving system in the present embodiment.

Detailed Description

To make the objects, technical solutions and advantages of the present application more apparent, embodiments of the present application will be described in detail below with reference to the accompanying drawings. It should be noted that the embodiments and features of the embodiments in the present application may be arbitrarily combined with each other without conflict.

To facilitate an understanding of the present application, the present application will now be described more fully with reference to the accompanying drawings. Embodiments of the present application are set forth in the accompanying drawings. This application may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used herein in the description of the present application is for the purpose of describing particular embodiments only and is not intended to be limiting of the application.

It is to be understood that the terms "first", "second", and the like, as used herein, are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicit to a number of technical features being indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present application, "plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.

It is to be understood that "connection" in the following embodiments is to be understood as "electrical connection", "communication connection", and the like if the connected circuits, modules, units, and the like have communication of electrical signals or data with each other.

As used herein, the singular forms "a", "an" and "the" may include the plural forms as well, unless the context clearly indicates otherwise. It will be further understood that the terms "comprises/comprising," "includes" or "including," etc., specify the presence of stated features, integers, steps, operations, components, parts, or combinations thereof, but do not preclude the presence or addition of one or more other features, integers, steps, operations, components, parts, or combinations thereof. Also, as used in this specification, the term "and/or" includes any and all combinations of the associated listed items.

In an embodiment of the present application, a non-Standalone Networking (NSA) mode may include any of the following architectures: EN-DC, NE-DC, NGEN-DC, and the like. Wherein DC represents Dual Connectivity, i.e. Dual Connectivity; e represents E-UTRA, namely a 4G wireless access network; n represents NR, namely 5G new wireless; NG stands for next generation core network, i.e. 5G core network.

Under an EN-DC framework, a core network is a 4G core network, a 4G base station is a main station, a 5G base station is an auxiliary station, and the EN-DC refers to double connection of a 4G wireless access network and a 5G NR; under the NE-DC framework, the core network is a 5G core network, the 5G base station is a main station, the 4G base station is an auxiliary station, and the NE-DC refers to the double connection between the 5G NR and the 4G radio access network; under the NGEN-DC architecture, the core network is a 5G core network, the 4G base station is a master station, the 5G base station is an auxiliary station, and the NGEN-DC refers to the double connection of the 4G radio access network and the 5G NR under the 5G core network.

For convenience of description, the non-independent networking mode in the embodiment of the present application is described by taking an EN-DC architecture as an example.

Fig. 1 is a schematic structural diagram of a first embodiment of a first rf front-end device in an embodiment of the present application, which is used for a diversity antenna rf link, and as shown in fig. 1, the first rf front-end device is at least provided with an intermediate frequency transmit port MB RFIN and an intermediate frequency auxiliary transmit port MB TX OUT; the first radio frequency front end device comprises at least:

the first transmitting circuit 110 is connected to the intermediate frequency transmitting port MB RFIN and the intermediate frequency auxiliary transmitting port MB TX OUT, and configured to perform power amplification processing on a first intermediate frequency signal from the intermediate frequency transmitting port MB RFIN and output the first intermediate frequency signal through the intermediate frequency auxiliary transmitting port MB TX OUT;

IN an exemplary example, the first rf front-end device is further provided with a medium-high frequency antenna port MHB ANT, at least three medium-high frequency receiving ports LNA OUT MHB, at least two auxiliary receiving ports LNA AUX IN; the first rf front-end device shown in fig. 1 further includes:

a first switch circuit 130, a plurality of second ports of the first switch circuit 130 are respectively connected with the first receiving circuit 120, and a first port of the first switch circuit 130 is connected with the medium-high frequency antenna port MHB ANT, and is used for selectively conducting a receiving path between the medium-high frequency receiving port LNA OUT MHB of the first receiving circuit 120 and the medium-high frequency antenna port MHB ANT;

a first receiving circuit 120, connected to the middle/high frequency receiving port LNA OUT MHB and the auxiliary receiving port LNA AUX IN, for amplifying a diversity signal of a first intermediate frequency signal from the auxiliary receiving port LNA AUX IN and outputting the amplified diversity signal to the middle/high frequency receiving port LNA OUT MHB, amplifying a diversity MIMO signal of a second intermediate frequency signal from the auxiliary receiving port LNA AUX IN and outputting the amplified diversity MIMO signal to the middle/high frequency receiving port LNA OUT MHB, and amplifying a diversity signal of at least a second intermediate frequency signal among a plurality of middle/high frequency signals received from the receiving path and outputting the amplified diversity signal to the middle/high frequency receiving port LNA OUT MHB;

the second intermediate frequency band signal is a signal of another preset intermediate frequency band in a non-independent networking mode.

IN another exemplary example, the first rf front-end device is further provided with a medium-high frequency antenna port MHB ANT, at least four medium-high frequency receiving ports LNA OUT MHB, at least three auxiliary receiving ports LNA AUX IN; the first rf front-end device shown in fig. 1 further includes:

a first receiving circuit 120 connected to the middle/high frequency receiving port LNA OUT MHB and the auxiliary receiving port LNA AUX IN, for amplifying and outputting the diversity signal of the first intermediate frequency band signal from an auxiliary receiving port LNA AUX IN to a medium and high frequency receiving port LNA OUT MHB, the diversity MIMO signal of the second intermediate frequency signal from an auxiliary receiving port LNA AUX IN is amplified and outputted to a middle and high frequency receiving port LNA OUT MHB, amplifies a first intermediate frequency signal from an auxiliary receiving port LNA AUX IN connected to an external circuit and outputs the amplified signal to a middle/high frequency receiving port LNA OUT MHB, amplifying diversity signals of at least a second intermediate frequency signal in a plurality of intermediate and high frequency signals received from a receiving path and outputting the diversity signals to an intermediate and high frequency receiving port LNA OUT MHB;

The first rf front-end device provided in the embodiment shown in fig. 1 of the present application supports receiving of multiple intermediate frequency signals in different frequency bands and transmitting of a predetermined first intermediate frequency signal, and supports a non-independent networking mode. The plurality of mid-band signals may comprise mid-band signals of different frequency bands in a 4G signal, a 5G NR signal or a 6G signal. Illustratively, the frequency bands of the plurality of intermediate frequency band signals include at least B1, B3, B25, B34, B66, B39, N1, and N3 frequency bands, as well as a preset first intermediate frequency band and a preset second intermediate frequency band. In one embodiment, the preset first intermediate frequency range may include, but is not limited to, one of the following: b3, B1, etc., and accordingly, the predetermined second intermediate frequency band may include, but is not limited to, one of the following: n1, N3, etc. In one embodiment, the preset first intermediate frequency range may include, but is not limited to, one of the following: n1, N3, etc., and accordingly, the predetermined second intermediate frequency band may include, but is not limited to, one of the following: b3, B1, etc. In an embodiment, the preset first middle band in the embodiment of the present application may be a B3 band, and accordingly, the preset second middle band may be replaced with a second high band, i.e., a high band signal such as an N41 band.

The rf front-end device shown IN fig. 1 may be understood as a package structure, and as shown IN fig. 1, IN one embodiment, the rf front-end device is provided with at least an if transmitting port MB RFIN and at least three (or four) if receiving ports LNA OUT MHB for connecting to an rf transceiver, an if antenna port MHB ANT for connecting to an antenna, and an if auxiliary transmitting port MB TX OUT and at least two (or three) auxiliary receiving ports LNA AUX IN for connecting to external devices. The medium-high frequency receiving port LNA OUT MHB, the medium-high frequency transmitting port MB RFIN, the medium-high frequency antenna port MHB ANT, the medium-frequency auxiliary transmitting port MB TX OUT, and the auxiliary receiving port LNA AUX IN may be understood as radio frequency pin terminals of the first radio frequency front end device, and are used for being connected with each external device. In one embodiment, the medium-high frequency receiving port LNA OUT MHB, the medium-frequency transmitting port MB RFIN may be used for connection with a radio frequency transceiver; the medium-high frequency antenna port MHB ANT may be for connection to an antenna for receiving a plurality of radio frequency signals including diversity signals of the second medium frequency band signal; the intermediate frequency auxiliary transmitting port MB TX OUT is connected with an external circuit to realize the transmission of a first intermediate frequency band signal; when the number of the auxiliary receiving ports LNA AUX IN is two, the two auxiliary receiving ports LNA AUX IN are respectively connected with respective external circuits to receive diversity signals of the first intermediate frequency band signal and receive diversity MIMO signals of the second intermediate frequency band signal; when the number of the auxiliary receiving ports LNA AUX IN is three, the three auxiliary receiving ports LNA AUX IN are respectively connected to respective external circuits to implement reception of the first intermediate frequency band signal, reception of the diversity signal of the first intermediate frequency band signal, and reception of the diversity MIMO signal of the second intermediate frequency band signal.

In one illustrative example, as shown in fig. 1, the first rf front-end device may include: a first transmitting circuit 110, a first receiving circuit 140, and a first switching circuit 130.

In an exemplary example, as shown in fig. 1, an input terminal of the first transmitting circuit 110 is connected to the intermediate frequency transmitting port MB RFIN, and performs power amplification processing on a first intermediate frequency signal received by the intermediate frequency transmitting port MB RFIN; the output end of the first transmitting circuit 110 is connected to the intermediate frequency auxiliary transmitting port MB TX OUT, and the amplified first intermediate frequency signal is output from the intermediate frequency auxiliary transmitting port MB TX OUT. The first transmit circuitry 110 may be provided with a transmit path to support transmission of the first mid-band signal. For example, the frequency band corresponding to the first intermediate frequency band signal may include, for example, a B3 or B1 frequency band, and may also be an N1 or N3 frequency band. In one embodiment, the first transmit path may include: the antenna comprises a transmission path which is formed by an intermediate frequency transmission port MB RFIN, a first transmission circuit 110, an intermediate frequency auxiliary transmission port MB TX OUT, an external circuit (such as a preset first intermediate frequency band duplexer) and an antenna.

IN an exemplary example, as shown IN fig. 1, the first receiving circuit 120 is connected to the first switching circuit 130, the middle and high frequency receiving port LNA OUT MHB, and the auxiliary receiving port LNA AUX IN, respectively. The output terminal of the first receiving circuit 120 is connected to the medium-high frequency receiving port LNA OUT MHB. In one embodiment, the input of the first receiving circuit 120 includes: a plurality of input ports connected IN one-to-one correspondence with the plurality of second terminals of the first switching circuit 130, and at least two auxiliary receiving ports LNA AUX IN. The first receiving circuit 120 amplifies the rf signal including the diversity signal of the second if signal from the plurality of input ports, and the diversity MIMO signal of the first if signal and the diversity MIMO signal of the second if signal from the different auxiliary receiving ports LNA AUX IN, respectively, and outputs the signals to the different intermediate and high frequency receiving ports LNA OUT MHB. In another embodiment, the input terminal of the first receiving circuit 120 includes: a plurality of input ports connected IN one-to-one correspondence with the plurality of second terminals of the first switching circuit 130, and at least three auxiliary receiving ports LNA AUX IN. The first receiving circuit 120 amplifies the rf signal including the diversity signal of the second if signal from the plurality of input ports, and the diversity MIMO signal including the first if signal, the diversity signal of the first if signal, and the second if signal from the different auxiliary receiving ports LNA AUX IN, respectively, and outputs the amplified signals to the different if receiving ports LNA OUT MHB.

The first receiving circuit 120 in this embodiment supports reception control of any of the aforementioned intermediate frequency band signals. IN one embodiment, the auxiliary receive port LNA AUX IN may be used to receive at least mid-band signals of the B3/B1 and N1/N3 bands. In one embodiment, the first receiving circuit 120 may be provided with a plurality of receiving paths to support the reception of a plurality of mid and high frequency band signals. In one embodiment, the receive path may include: a receiving path formed by the medium-high frequency antenna port MHB ANT, the first switch circuit 130, the first receiving circuit 120 and any medium-high frequency receiving port LNA OUT MHB, and a receiving path formed by the auxiliary receiving port LNA AUX IN, the first receiving circuit 120 and any medium-high frequency receiving port LNA OUT MHB.

The first radio frequency front-end device shown in fig. 1 is used for a diversity antenna radio frequency link, a non-independent networking mode can be supported without an external multi-mode multi-frequency power amplifier device, the occupied area of a Printed Circuit Board (PCB) is reduced, the integration level of a radio frequency device is improved, the cost is reduced, wiring of power supply, transmission control and the like is reduced after integration, the complexity of single-board layout is reduced, and therefore the performance of a radio frequency transceiving system and communication equipment is improved.

Fig. 2 is a schematic structural diagram of a second embodiment of a first rf front-end device in an embodiment of the present application, and as shown in fig. 2, in an exemplary embodiment, the first rf front-end device is further provided with a plurality of medium-high frequency auxiliary transceiving ports MHB TRX; the first switching circuit 130 is further configured to: and the radio frequency paths between the first receiving circuit 120 and the middle and high frequency auxiliary transceiving ports MHB TRX and the middle and high frequency antenna ports MHB ANT are selectively conducted.

In an exemplary example, the first rf front-end device is further provided with a low-frequency antenna port LB ANT, a plurality of low-frequency receiving ports LNA OUT LB, a plurality of low-frequency auxiliary receiving ports LNA AUX LB, a plurality of low-frequency auxiliary transceiving ports LB TRX; the first radio frequency front end device further comprises:

and a second switch circuit 150, a first end of the second switch circuit 150 is connected to the low-frequency antenna port LB ANT, and a plurality of second ends of the second switch circuit 150 are respectively connected to the second receiving circuit 140 and the low-frequency auxiliary transceiving port LB TRX, and are configured to selectively conduct a radio frequency path between the second receiving circuit 140 and the low-frequency auxiliary transceiving port LB TRX, respectively, and the low-frequency antenna port LB ANT.

And a second receiving circuit 140, connected to the low frequency receiving port LB ANT and the low frequency auxiliary receiving port LNA AUX LB, for performing filtering processing and amplification processing on the low frequency band signal from the low frequency auxiliary receiving port LNA AUX LB and the radio frequency path and outputting the low frequency band signal to the low frequency receiving port LNA OUT LB.

Fig. 3 is a schematic structural diagram of a third embodiment of the first rf front-end device in the embodiment of the present application, and as shown in fig. 3, in an exemplary example, the first rf front-end device in the embodiment of the present application is further provided with a coupling output port CPLOUT and a coupling input port CPLIN, and the first rf front-end device further includes a coupling circuit 180, which is disposed in a radio frequency path between the first transmitting circuit 110 and the intermediate frequency auxiliary transmitting port MB TX OUT, and is configured to couple an intermediate frequency band signal in the radio frequency path so as to output a coupling signal through the coupling output port CPLOUT. Wherein the coupled signal can be used to measure the forward coupled power and the reverse coupled power of the mid-band signal. The coupling input port CPLIN may be used for connecting with other external radio frequency front-end devices having a coupling output port, and is configured to receive a coupling signal output by the other external radio frequency front-end devices, and output the received coupling signal through the coupling output port CPLOUT of the radio frequency front-end device to which the coupling input port CPLIN belongs, so as to implement transmission of the other external coupling signal.

The ports added in fig. 2 and 3 can be understood as the rf pin terminals of the first rf front-end device.

The first rf front-end device provided in the embodiments of the present application is a low frequency front-end Module (LFEM) device. The LFEM device can support the receiving of intermediate frequency signals, high frequency signals and low frequency signals of a plurality of different frequency bands, and the transmitting of a preset first intermediate frequency band signal, realizes the receiving switching control among a plurality of intermediate frequency signals, realizes the receiving switching control among a plurality of high frequency signals, realizes the receiving switching control among a plurality of low frequency signals, and supports a non-independent networking mode. The plurality of middle and high frequency signals may include middle and high frequency signals of different frequency bands in the 4G signal and the 5GNR signal. Specifically, the frequency bands of the plurality of intermediate frequency signals and the frequency bands of the plurality of high frequency signals may include frequency bands of B1, B4, B3, B25, B34, B66, B39, B41, B7, B40, B70, B32, B35, B75, B76, N1, N3, and the like. The plurality of low frequency band signals may include frequency bands of B28, B20, B8, B26, etc.

Fig. 4 is a schematic structural diagram of a first exemplary embodiment of a first LFEM device IN the present embodiment, and as shown IN fig. 4, the first LFEM device is provided with an intermediate frequency transmitting port MB RFIN for connecting with a radio frequency transceiver, at least three intermediate and high frequency receiving ports LNA OUT MHB, an intermediate frequency auxiliary transmitting port MB TX OUT for connecting with an external circuit, an intermediate and high frequency antenna port MHB ANT for connecting with an antenna, and at least two auxiliary receiving ports LNA AUX IN. The middle-high frequency receiving port LNA OUT MHB, the middle-high frequency transmitting port MB RFIN, the middle-high frequency auxiliary transmitting port MB TX OUT, the middle-high frequency antenna port MHB ANT and the auxiliary receiving port LNA AUX IN can be understood as radio frequency pin terminals of the first LFEM device and are used for being connected with external devices. In one embodiment, the medium-high frequency receiving port LNA OUT MHB, the medium-frequency transmitting port MB RFIN may be used for connection with a radio frequency transceiver; the medium-high frequency antenna port MHB ANT may be configured to connect to an antenna, and may transmit each radio frequency signal of the diversity signal including the second medium frequency band signal received by the antenna to the first LFEM device; the intermediate frequency auxiliary transmission port MB TX OUT is connected to the external circuit 10 to transmit the first intermediate frequency signal. The auxiliary receiving port LNA AUX IN is connected to other external circuits, and transmits diversity signals of the first intermediate frequency band signal and diversity MIMO signals of the second intermediate frequency band signal from other external circuits to the LFEM device.

In an exemplary example, the external circuit 10 is a switching circuit, and the switching circuit is connected to the intermediate frequency auxiliary transmission port MB TX OUT, the external chip, and the antenna, respectively. In an embodiment, the switching circuit may be a first intermediate band Duplexer, which is a three-port rf device, and is configured to divide the transmit/receive signal of the antenna into two different signal paths according to the direction of the signal path, so as to implement single-antenna bidirectional communication. In the embodiment of the present application, the transceiving signal is a first intermediate frequency signal of a preset first intermediate frequency.

In an exemplary embodiment, one of the output ports of the first middle band duplexer is connected to the middle frequency auxiliary transmitting port MB TX OUT, and is configured to output a first middle band signal; the other output port of the preset first intermediate frequency band duplexer is connected with an external chip and used for receiving a first intermediate frequency band signal; the preset common port of the first intermediate frequency band duplexer is connected with an antenna and used for receiving or transmitting a first intermediate frequency band signal. Through presetting the first intermediate frequency band duplexer, the filtering and the isolation of the transmitting signal of the preset first intermediate frequency band and the receiving signal of the preset first intermediate frequency band are realized.

In an illustrative example, as shown in fig. 4, the first transmitting circuit 110 may include at least: an input end of the first intermediate frequency power amplifier 111 is connected to the intermediate frequency transmit port MB RFIN, and an output end of the first intermediate frequency power amplifier 111 is connected to the intermediate frequency auxiliary transmit port MB TX OUT, and is configured to perform power amplification processing on the first intermediate frequency signal received through the intermediate frequency transmit port MB RFIN. In one embodiment, the first mid-band signal may include a B3 or B1 band signal, and may also include an N1 or N3 band signal. In one embodiment, the first transmit path may include: the intermediate frequency transmitting port MB RFIN, the first intermediate frequency power amplifier 111, the intermediate frequency auxiliary transmitting port MB TX OUT, the external circuit 10, and the antenna together form a transmitting path.

In the embodiment of the application, the first intermediate frequency power amplifier 111 is integrated in the first LFEM, so that an external multi-mode multi-frequency power amplifier device is not needed, the occupied area of a PCB is reduced, the integration level of a radio frequency device is improved, the cost is reduced, wiring such as power supply and transmission control is reduced after integration, the complexity of layout of a single board is reduced, and the performance of a radio frequency transceiving system and communication equipment is improved.

In an exemplary example, as shown in fig. 4, the first switching circuit 130 includes a first switching unit 131. In one embodiment, the first switch unit 131 may be a multi-channel selection switch 131 such as SP 7T. A first port of the first switching unit 131 is connected to the medium-high frequency antenna port MHB ANT; the second ports of the first switch unit 131 are respectively connected to the first filtering units 1131.

In an illustrative example, as shown in fig. 4, the first receiving circuit 120 may include: at least three low noise amplifiers 121, at least three second switching units 122, a third switching unit 123; wherein the content of the first and second substances,

an input terminal of a low noise amplifier 121 (e.g., the low noise amplifier LNA4 in the embodiment shown in fig. 4) is connected to a first port of a second switching unit 122 (e.g., the second switching unit SPDT in the embodiment shown in fig. 4), a second port of the second switching unit SPDT is connected to the first switching unit 131, an output terminal of the low noise amplifier LNA4 is connected to a second port of the third switching unit 123, and the low noise amplifier LNA4 is configured to amplify the diversity signal of the second if signal and output the amplified diversity signal to a if receiving port LNA OUT MHB (e.g., the if receiving port LNA OUT MHB2 in the embodiment shown in fig. 4) through the third switching unit 123;

an input terminal of a low noise amplifier 121 (e.g., the low noise amplifier LNA6 IN the embodiment shown IN fig. 4) is connected to a first port of a second switch unit 122 (e.g., the second switch unit SP3T #5 IN the embodiment shown IN fig. 4), a second port of the second switch unit SP3T #5 is connected to an auxiliary receiving port LNA AUX IN1 (e.g., the auxiliary receiving port LNA AUX LMB IN the embodiment shown IN fig. 4), and an output terminal of the low noise amplifier LNA6 is connected to another second terminal of the third switch unit 123, so as to amplify the diversity MIMO signal of the received second intermediate frequency band signal and output the amplified diversity MIMO signal to another intermediate and high frequency receiving port LNA OUT MHB (e.g., the intermediate and high frequency receiving port LNA OUT MHB4 IN the embodiment shown IN fig. 4);

an input terminal of a low noise amplifier 121 (e.g., the low noise amplifier LNA3 IN the embodiment shown IN fig. 4) is connected to a first port of a second switching unit 122 (e.g., the second switching unit SP3T #3 IN the embodiment shown IN fig. 4), a second port of the second switching unit SP3T #3 is connected to an auxiliary receiving port LNA AUX IN5 (e.g., the auxiliary receiving port LNA AUX HB4 IN the embodiment shown IN fig. 4), and an output terminal of the low noise amplifier LNA3 is connected to a second port of the third switching unit 123, so as to amplify the diversity signal of the first intermediate frequency signal and output the amplified diversity signal to a high frequency receiving port LNA OUT MHB (e.g., the high frequency receiving port LNA OUT MHB1 IN the embodiment shown IN fig. 4) through the third switching unit 123.

In an exemplary example, the first receiving circuit 120 may further include a plurality of first filtering units 1131. The input end of the first filtering unit 1131 may be correspondingly connected to the first switch circuit 130, and the output end of the first filtering unit 1131 may be correspondingly connected to a second port of the second switch unit 122, so as to filter the received radio frequency signal, where frequency bands of the radio frequency signals output by the first filtering units 1131 are different. It should be noted that, in the embodiment of the present application, the first filtering unit 1131 is not further limited, and may be set according to actual requirements.

In one embodiment, the receive path may include: the antenna device comprises a medium-high frequency antenna port MHB ANT, a first switch circuit 130, a second switch unit 122, a low noise amplifier 121, a third switch unit 123, and a receiving path formed by any medium-high frequency receiving port LNA OUT MHB, and a receiving path formed by other external circuits (not shown IN the figure), an auxiliary receiving port LNA AUX IN, a low noise amplifier 121, a third switch unit 123, and any medium-high frequency receiving port LNA OUT MHB.

In an exemplary example, the first LFEM device is further provided with a low-frequency antenna port LB ANT, two low-frequency receiving ports LNA OUT LB, three low-frequency auxiliary receiving ports LNA AUX LB, and three low-frequency auxiliary transceiving ports LB TRX; the first LFEM device may further include: a second receiving circuit 140 and a second switching circuit 150. In an exemplary example, the second receiving circuit 140 may be composed of a power amplifier and a switching unit, such as a fourth switching unit 142, a fifth switching unit 143, and a low noise amplifier 141 in fig. 4. In an exemplary example, the second switching circuit 150 includes a sixth switching unit 151 as in fig. 4. In an exemplary example, a first terminal of the fifth switching unit 143 is connected to the low frequency receiving port LNA OUT LB, a second terminal of the fifth switching unit 143 is connected to output terminals of different low noise amplifiers 141, respectively, an input terminal of the low noise amplifier 141 is connected to a first terminal of a fourth switching unit 142, a part of second terminals of the fourth switching unit 142 is correspondingly connected to a second terminal of a sixth switching unit 151, and a part of second terminals of the fourth switching unit 142 is connected to the low frequency auxiliary receiving port LNA AUX LB in a one-to-one correspondence.

In an exemplary embodiment, the sixth switching unit 151 and the fourth switching unit 142 may further be connected through a second filter 1132, and configured to filter the received radio frequency signal, and frequency bands of the radio frequency signals output by the second filtering units 1132 are different. It should be noted that, in this embodiment of the application, the second filtering unit 1132 is not further limited, and may be set according to actual requirements.

It should be noted that, in the embodiments of the present application, each switch unit in the drawings is only some examples, and is not used to limit the number of switches included in the switch unit and the type thereof, and the switch unit in the embodiments of the present application may be set according to the number of circuits connected thereto.

In an exemplary example, as shown in fig. 3, the first LFEM device is further provided with a coupling output port CPLOUT, and the first LFEM device further includes a coupling circuit 180, which is provided in the radio frequency path between the first intermediate frequency power amplifier 111 and the intermediate frequency auxiliary transmission port MB TX OUT, for coupling the intermediate frequency band signal in the radio frequency path to output the coupled signal via the coupling output port CPLOUT.

In an exemplary example, as shown in fig. 4, the LFEM device may further include: and the first controller 170 is respectively connected with each switch unit in the LFEM device, and is used for controlling the on/off of each switch unit.

Based on the trend of miniaturization of the main board of the terminal device, the embodiment of the present application provides a first LFEM device, which is composed as shown in fig. 4. The whole chip integrates a multi-band receiving channel and a preset first intermediate frequency band transmitting channel, and comprises frequency bands such as B1, B3, B34, B39, B40, B41, N1 and N3; and a plurality of intermediate frequency auxiliary receiving ports, a plurality of low frequency auxiliary receiving and transmitting ports and a plurality of low frequency auxiliary receiving ports for external frequency band extension.

Based on the first LFEM device as shown in fig. 4, a non-independent networking mode may be supported. For example, to implement dual connection of 4G and 5G, an EN-DC combination of B3+ N1 with a first intermediate frequency band being a B3 frequency band and a second intermediate frequency band being an N1 frequency band is taken as an example for explanation.

The transmission path of the B3 frequency band is as follows:

the intermediate frequency transmission port MB RFIN → the first intermediate frequency power amplifier 111 → the intermediate frequency auxiliary transmission port MB TX OUT → the first intermediate band duplexer 10 → the antenna.

The diversity reception path of the N1 band is as follows:

the middle and high frequency antenna port MHB ANT → the contact 9 of the first switching unit 131 → the contact 4 of the first switching unit 131 → the first filtering unit 1131 → a second switching unit 122 (such as SPDT) → the low noise amplifier LNA4 → the contact 2 of the third switching unit 123 → the middle and high frequency receiving port LNA OUT MHB2 → the radio frequency transceiver.

The diversity MIMO receive path for the N1 band is as follows:

antenna → an external filter → the auxiliary receiving port LNA AUX IN1 (i.e., LNA AUX LMB) → a second switch unit 122 (e.g., SP3T #5) → the low noise amplifier LNA6 → the contact 4 of the third switch unit 123 → the high frequency receiving port IN the receiving port LNA OUT MHB4 → the radio frequency transceiver.

The diversity reception path of the B3 band is as follows:

antenna → an external filter → the auxiliary receiving port LNA AUX IN5 (i.e., LNA AUX HB4) → a second switching unit 122 (e.g., SP3T #3) → low noise amplifier LNA3 → contact 1 of the third switching unit 123 → the high frequency receiving port IN the receiving port LNA OUT MHB1 → radio frequency transceiver.

Fig. 5 is a schematic structural diagram of a second embodiment of a first LFEM device in the embodiment of the present application, and as shown in fig. 5, the first LFEM device in the second embodiment is different from the first LFEM device in the first embodiment shown in fig. 4 in that: the medium and high frequency receiving ports LNA OUT MHB include at least four, and the auxiliary receiving port LNA AUX IN includes at least three. Other components and operation principles of the first LFEM device in the second embodiment are the same as those in fig. 4, and are not described herein again, and only different parts are described in detail below.

In an illustrative example, as shown in fig. 5, the first receiving circuit 120 may include: at least four low noise amplifiers 121, at least four second switching units 122, a third switching unit 123; wherein the content of the first and second substances,

an input terminal of a low noise amplifier 121 (e.g., the low noise amplifier LNA4 in the embodiment shown in fig. 5) is connected to a first port of a second switching unit 122 (e.g., the second switching unit SPDT in the embodiment shown in fig. 5), a second port of the second switching unit SPDT is connected to the first switching circuit 130, an output terminal of the low noise amplifier LNA4 is connected to a second port of the third switching unit 123, and the low noise amplifier LNA4 is configured to amplify the diversity signal of the second if signal and output the amplified diversity signal to a if receiving port LNA OUT MHB (e.g., the if receiving port LNA OUT MHB2 in the embodiment shown in fig. 5);

an input terminal of a low noise amplifier 121 (e.g., the low noise amplifier LNA6 IN the embodiment shown IN fig. 5) is connected to a first port of a second switch unit 122 (e.g., the second switch unit SP3T #5 IN the embodiment shown IN fig. 5), a second port of the second switch unit SP3T #5 is connected to an auxiliary receiving port LNA AUX IN1 (e.g., the auxiliary receiving port LNA AUX LMB IN the embodiment shown IN fig. 5), and an output terminal of the low noise amplifier LNA6 is connected to another second terminal of the third switch unit 123, so as to amplify the diversity MIMO signal of the received second intermediate frequency band signal and output the amplified diversity MIMO signal to another intermediate and high frequency receiving port LNA OUT MHB (e.g., the intermediate and high frequency receiving port LNA OUT MHB4 IN the embodiment shown IN fig. 5);

an input terminal of a low noise amplifier 121 (e.g., the low noise amplifier LNA8 IN the embodiment shown IN fig. 5) is connected to a first port of a second switch unit 122 (e.g., the second switch unit SP3T #7 IN the embodiment shown IN fig. 5), a second port of the second switch unit SP3T #7 is connected to an auxiliary receiving port LNA AUX IN7 (e.g., the auxiliary receiving port LNA AUX MHB6 IN the embodiment shown IN fig. 5) connected to the external circuit 10, and an output terminal of the low noise amplifier LNA8 is connected to another second port of the third switch unit 123, and is configured to amplify the first intermediate frequency signal and output the amplified signal to another intermediate frequency receiving port LNA OUT MHB (e.g., the intermediate frequency receiving port LNA OUT MHB6 IN the embodiment shown IN fig. 5) through the third switch unit 123;

an input terminal of a low noise amplifier 121 (e.g., the low noise amplifier LNA3 IN the embodiment shown IN fig. 5) is connected to a first port of a second switching unit 122 (e.g., the second switching unit SP3T #3 IN the embodiment shown IN fig. 5), a second port of the second switching unit SP3T #3 is connected to an auxiliary receiving port LNA AUX IN5 (e.g., the auxiliary receiving port LNA AUX HB4 IN the embodiment shown IN fig. 5), and an output terminal of the low noise amplifier LNA3 is connected to a second port of the third switching unit 123, so as to amplify the diversity signal of the first intermediate frequency signal and output the amplified diversity signal to a high frequency receiving port LNA OUT MHB (e.g., the high frequency receiving port LNA OUT MHB1 IN the embodiment shown IN fig. 5) through the third switching unit 123.

IN an exemplary example, the external circuit 10 is a switching circuit connected to the intermediate frequency auxiliary transmission port MB TX OUT, the auxiliary reception port LNA AUX IN, and the antenna, respectively. In an embodiment, the switching circuit may be a first intermediate band Duplexer, which is a three-port rf device, and is configured to divide the transmit/receive signal of the antenna into two different signal paths according to the direction of the signal path, so as to implement single-antenna bidirectional communication. In the embodiment of the present application, the transceiving signal is a first intermediate frequency signal of a preset first intermediate frequency.

In an exemplary embodiment, one of the output ports of the first middle band duplexer is connected to the middle frequency auxiliary transmitting port MB TX OUT, and is configured to output a first middle band signal; the other output port of the preset first intermediate frequency band duplexer is connected with an auxiliary receiving port LNA AUX IN and used for receiving a first intermediate frequency band signal; the preset common port of the first intermediate frequency band duplexer is connected with an antenna and used for receiving or transmitting a first intermediate frequency band signal. Through presetting the first intermediate frequency band duplexer, the filtering and the isolation of the transmitting signal of the preset first intermediate frequency band and the receiving signal of the preset first intermediate frequency band are realized.

Based on the first LFEM device as shown in fig. 5, a non-independent networking mode may be supported. For example, to implement dual connection of 4G and 5G, the first intermediate frequency band may be, for example, a B3 frequency band, and the second intermediate frequency band may be, for example, an EN-DC combination of B3+ N1 of an N1 frequency band.

The transmission path of the B3 frequency band is as follows:

The receiving path of the B3 frequency band is as follows:

antenna → first mid-band duplexer 10 → auxiliary receiving port LNA AUX IN7 (i.e. auxiliary receiving port LNA AUX MHB6) → a second switch unit 122 (e.g. SP3T #7) → low noise amplifier LNA8 → contact 6 of third switch unit 123 → receiving port mid-high frequency receiving port LNA OUT MHB6 → radio frequency transceiver.

The diversity reception path of the N1 band is as follows:

The diversity MIMO receive path for the N1 band is as follows:

The diversity reception path of the B3 band is as follows:

The first LFEM device provided by the embodiment of the application can support a non-independent networking mode without an external multi-mode multi-frequency power amplifier device, reduces the occupied area of a PCB (printed circuit board), improves the integration level of a radio frequency device, reduces the cost, reduces the wiring of power supply, transmission control and the like after integration, and reduces the complexity of single board layout, thereby improving the performance of a radio frequency transceiving system and communication equipment.

In order to meet the requirement of the 5G MB MIMO function, an embodiment of the present application further provides a radio frequency transceiving system, and the radio frequency transceiving system is implemented by the first LFEM and the radio frequency MHB L-PA Mid device provided in the embodiment of the present application. The radio frequency MHB L-PA Mid device is also called a middle-high frequency Power Amplifier module of a built-in low noise Amplifier, and is a radio frequency L-PA Mid device, which can be understood as a Power Amplifier module of a built-in low noise Amplifier (L-PA Mid Power Amplifier Modules including Duplexers and lnas). The radio frequency MHB L-PA Mid device in the embodiment of the application can support receiving and transmitting of a plurality of intermediate frequency signals and high frequency signals of different frequency bands, realize receiving switching control and transmitting switching control among the plurality of intermediate frequency signals and switching control between transmitting and receiving, realize receiving switching control and transmitting switching control among the plurality of high frequency signals and switching control between transmitting and receiving, and support a non-independent networking mode. The plurality of middle and high frequency signals may include middle and high frequency signals of different frequency bands in the 4G signal and the 5GNR signal. Specifically, the frequency bands of the plurality of intermediate frequency signals may include B1, B3, B25, B34, B66, B39, N1, and N3 frequency bands. The frequency bands of the plurality of high frequency signals may include B30, B7, B40, B41, N7, and N41. The radio frequency MHB L-PA Mid device in the embodiment of the present application at least includes: a first antenna port ANT1, one or two auxiliary receive ports LNA IN, and corresponding transmit circuitry, receive circuitry, and switching circuitry for supporting at least transmit and receive processing of a plurality of intermediate frequency signals. It should be noted that the specific implementation of the radio frequency MHB L-PA Mid device is not used to limit the scope of the present application.

Fig. 6 is a schematic structural diagram of a first embodiment of a first rf transceiving system in an embodiment of the present application, and fig. 7 is a schematic structural diagram of a second embodiment of the first rf transceiving system in the embodiment of the present application, where as shown in fig. 6 and 7, the first rf transceiving system at least includes:

a first antenna ANT1, a second antenna ANT2, a third antenna ANT3, a fourth antenna ANT4, a radio frequency transceiver 40, an external circuit 10, a first radio frequency front end device (such as LFEM device 60) and a radio frequency MHB L-PA Mid device 50 in any of the foregoing embodiments of fig. 1-5, a second combiner 82, a fourth combiner 84, a first filter 71, a second filter 72, and a third filter 73; wherein the content of the first and second substances,

the radio frequency transceiver 40 is connected with a first antenna ANT1 through a radio frequency MHB PA Mid device 50 to form a transmitting channel of the middle frequency band signal at least including the second middle frequency band signal and a main set receiving channel of the middle frequency band signal at least including the second middle frequency band signal;

the radio frequency transceiver 40 is connected to the second antenna ANT2 through the first radio frequency front end device 60, the radio frequency MHB PA Mid device 50, the external circuit 10, the first filter 71 and the second combiner 82 to form a transmitting channel of the first intermediate frequency band signal, a main set receiving channel of the first intermediate frequency band signal, and a main set MIMO receiving channel of the second intermediate frequency band signal;

the rf transceiver 40 is connected to the third antenna ANT3 through the first rf front-end device 60 to form a diversity receiving channel at least including the middle and high frequency band signals of the second middle frequency band signal;

the radio frequency transceiver 40 is connected to a fourth antenna ANT4 through a first radio frequency front-end device 60, a second filter 72, a third filter 73 and a fourth combiner 84, so as to form a diversity receiving channel for the first intermediate frequency band signal and a diversity MIMO receiving channel for the second intermediate frequency band signal;

In one illustrative example, the first mid-band signal is a 4G mid-band signal and the second mid-band signal is a 5G NR mid-band signal, forming an EN-DC combination. In one embodiment, the first intermediate frequency band is the B3 frequency band, and the second intermediate frequency band is the N1 frequency band. In one embodiment, the first intermediate frequency band is the B1 frequency band, and the second intermediate frequency band is the N3 frequency band.

In one embodiment, as shown in fig. 6, the first antenna ANT1 may be used for transmission of the second Mid-band signal and reception of the main set of the second Mid-band signal, and the first antenna ANT1 is connected to the first antenna port ANT1 of the radio frequency MHB L-PA Mid device 50. The second antenna ANT2 may be used for transmission of the first mid-range signal, reception of the main set of first mid-range signals, and a main-set MIMO reception of the second intermediate frequency band signal, the second antenna ANT2 is connected to the second end of the second combiner 82, a first port of the second combiner 82 is connected to an auxiliary receiving port LNA IN5 of the rf MHB L-PA Mid device 50 through the first filter 71, for the main-set MIMO reception of the second if signal, the other first port of the second combiner 82 is connected to the common port of the external circuit 10, one output port of the external circuit 10 is connected to the intermediate frequency auxiliary transmit port MB TX OUT of the LFEM device 60, for the transmission of the first intermediate frequency band signal, the other output port of the external circuit 10 is connected to an auxiliary receiving port LNA IN6 of the radio frequency MHB L-PA Mid device 50 for the main set reception of the first intermediate frequency band signal. The third antenna ANT3 may be used to implement diversity reception of the second mid-band signal, and the third antenna ANT3 is connected to a mid-high frequency antenna port MHB ANT of the LFEM device 60. The fourth antenna ANT4 may be configured to implement diversity reception of a first intermediate frequency signal and diversity MIMO reception of a second intermediate frequency signal, the fourth antenna ANT4 is connected to the second end of the fourth combiner 84, a first port of the fourth combiner 84 is connected to an auxiliary receiving port LNA AUX IN1 of the LFEM device 60 through the second filter 72, and is configured to implement diversity reception of the second intermediate frequency signal, and another first port of the fourth combiner 84 is connected to another auxiliary receiving port LNA AUX IN5 of the LFEM device 60 through the third filter 73, and is configured to implement diversity reception of the first intermediate frequency signal. It should be noted that the port in the embodiment is only an example, and is not used to limit the protection scope of the present application.

In one embodiment, as shown in fig. 7, the first antenna ANT1 may be used for transmission of the second Mid-band signal and reception of the main set of the second Mid-band signal, and the first antenna ANT1 is connected to the first antenna port ANT1 of the radio frequency MHB L-PA Mid device 50. The second antenna ANT2 may be configured to transmit a first intermediate frequency signal, receive a main set of the first intermediate frequency signal, and receive a main set MIMO of a second intermediate frequency signal, the second antenna ANT2 is connected to the second end of the second combiner 82, a first port of the second combiner 82 is connected to an auxiliary receiving port LNA IN5 of the radio frequency MHB L-PA Mid device 50 through the first filter 71, and is configured to receive the main set MIMO of the second intermediate frequency signal, another first port of the second combiner 82 is connected to a common port of the external circuit 10, one output port of the external circuit 10 is connected to an intermediate frequency auxiliary transmitting port MB OUT of the em device 60, and is configured to transmit the first intermediate frequency signal, and another output port of the external circuit 10 is connected to an auxiliary receiving port LNA AUX IN6 of the LFEM device 60, and is configured to receive the main set of the first intermediate frequency signal. The third antenna ANT3 may be used to implement diversity reception of the second mid-band signal, and the third antenna ANT3 is connected to a mid-high frequency antenna port MHB ANT of the LFEM device 60. The fourth antenna ANT4 may be configured to implement diversity reception of a first intermediate frequency signal and diversity MIMO reception of a second intermediate frequency signal, the fourth antenna ANT4 is connected to the second end of the fourth combiner 84, a first port of the fourth combiner 84 is connected to an auxiliary receiving port LNA AUX IN1 of the LFEM device 60 through the second filter 72, and is configured to implement diversity reception of the second intermediate frequency signal, and another first port of the fourth combiner 84 is connected to another auxiliary receiving port LNA AUX IN5 of the LFEM device 60 through the third filter 73, and is configured to implement diversity reception of the first intermediate frequency signal. It should be noted that the port in the embodiment is only an example, and is not used to limit the protection scope of the present application.

In an illustrative example, the external circuit 10 is a switching circuit. In an illustrative example, the external circuit 10 is a first mid-band duplexer. In one embodiment, the first mid-band duplexer is a B3 duplexer. In one embodiment, the first mid-band duplexer is a B1 duplexer.

According to the first radio frequency transceiving system provided by the embodiment of the application, on one hand, as the multi-mode multi-frequency power amplifier is integrated in the radio frequency front-end device, a non-independent networking mode can be supported without a plug-in multi-mode multi-frequency power amplifier device, and the occupied area of a PCB is reduced; on the other hand, the integration level of the radio frequency device is improved, so that the cost is reduced; moreover, through integration, wiring such as power supply, transmission control and the like is reduced, and the complexity of single-board layout is reduced, so that the performance of the radio frequency transceiving system is improved.

In an exemplary embodiment, the present application further provides a radio frequency transceiving system. As shown in fig. 6-8, the first radio frequency transceiving system may include an antenna group, a radio frequency MHB L-PA Mid device 50, a radio frequency transceiver 40, an LFEM device 60, an external circuit 10, a plurality of filters, a plurality of switching modules, and a plurality of combiners.

The antenna group includes a first antenna ANT1, a second antenna ANT2, a third antenna ANT3 and a fourth antenna ANT 4. The first antenna ANT1, the second antenna ANT2, the third antenna ANT3 and the fourth antenna ANT4 are all antennas capable of supporting a 4G band and a 5G NR band. In one embodiment, the first antenna ANT1, the second antenna ANT2, the third antenna ANT3 and the fourth antenna ANT4 may be directional antennas or non-directional antennas. Illustratively, the first antenna ANT1, the second antenna ANT2, the third antenna ANT3, and the fourth antenna ANT4 may be formed using any suitable type of antenna. Such as: the first, second, third, and fourth antennas ANT1, ANT2, ANT3, and ANT4 may include antennas having resonant elements formed of the following antenna structures: at least one of an array antenna structure, a loop antenna structure, a patch antenna structure, a slot antenna structure, a helical antenna structure, a strip antenna, a monopole antenna, a dipole antenna, and the like. Different types of antennas may be used for frequency band combining of different radio frequency signals.

The radio frequency MHB L-PA Mid device 50 supports at least transceiving processing of radio frequency signals of a plurality of intermediate frequency bands. Illustratively, the frequency bands of the plurality of mid-band signals may include at least B1, B3, B25, B34, B66, B39, N1, and N3 frequency bands. It should be noted that the specific implementation of the radio frequency MHB L-PA Mid device 50 is not intended to limit the scope of the present application.

The LFEM device 60 is configured to support at least a receiving process of a plurality of radio frequency signals in the medium-high frequency band and a transmitting or transmitting and receiving process of a preset first medium-frequency band signal, and support a non-independent networking mode. Illustratively, the plurality of mid-band signals includes B1, B4, B3, B25, B34, B66, B39, B41, B7, B40, B70, B32, B35, B75, B76, N1, and N3 bands.

Fig. 8 is a schematic structural diagram of a third embodiment of the first radio frequency transceiving system in this embodiment, where the first radio frequency transceiving system shown in fig. 8 further includes a radio frequency front end device for supporting transceiving processing of radio frequency signals of multiple low frequency bands, and as shown in fig. 8, the radio frequency front end device may be a radio frequency LB PA Mid device. It should be noted that, the specific implementation of the radio frequency LB PA Mid device in the embodiment of the present application is not used to limit the protection scope of the present application.

Based on the first rf transceiving system shown in fig. 8 and combined with fig. 4 and 6, the working principle of B3+ N1EN-DC is analyzed as follows by taking the preset first intermediate frequency band as the B3 frequency band and the preset second intermediate frequency band as the N1 frequency band as an example.

B3 TX link: a transmission signal (B3 TX1) of the first intermediate frequency band signal is output from the TX1 MB port of the rf transceiver 40 to the intermediate frequency transmission port MB RFIN port (denoted as 4G MB RFIN in fig. 8) of the LFEM device 60 through the rf line; after the signal is amplified by the first intermediate frequency power amplifier 111 (indicated as MB 4G PA in fig. 8), the amplified signal is output to the intermediate frequency auxiliary transmitting port MB TX OUT port; via Path11 Path to external circuit 10, i.e. B3 Duplexer duplex 1 in fig. 8; the B3 Duplexer duplex 1 filters B3 TX1, passes through Path05 and reaches a second combiner 82; after being combined by the second combiner 82, the B3 TX1 transmits from the second antenna ANT2 via Path 03.

B3 PRX link: a receiving signal (B3 RX1) of the first intermediate frequency band signal enters from the second antenna ANT2, passes through a Path03, and reaches the second combiner 82; after being combined by the second combiner 82, the combined signal passes through Path05 to the external circuit 10, that is, the B3 Duplexer duplex 1 in fig. 8; b3 Duplexer duplex 1 filters B3 RX1 to auxiliary receive port LNA IN6 (denoted as LMHB LNA IN2 IN fig. 8) of MHB L-PA Mid device 50; amplified by a low noise amplifier such as LNA6 in FIG. 8, and switched by a switch unit such as 6P6T in FIG. 8; 6P6T to contact 6, output from receive port LNA OUT 6; b3 RX1 enters the rf transceiver 40 via the SDR PRX3 port.

B3 DRX link: a diversity received signal (B3 DRX) of the first mid-band signal enters from the fourth antenna ANT4, passes through a Path08, and reaches the fourth combiner 84; the fourth combiner 84 is combined and then passes through Path10 to the third filter 73; the B3 DRX is filtered by the third filter 73 and then goes to an auxiliary receiving port LNA AUX IN (shown as LNA AUX HB4 IN fig. 8) of the LFEM device 60; a second switch unit 122 (e.g., SP3T #3 switch in fig. 8) of the LFEM device 60 switches the single port to a low noise amplifier 121 (e.g., LNA3 in fig. 8) path of the LFEM device 60; amplified by the low noise amplifier LNA3, and then sent to the third switching unit 123 (e.g., 6P6T switch in fig. 8) of the LFEM device 60; the 6P6T switch is switched to the contact 1 and is output from the middle high frequency receiving port LNA OUT MHB1 port; the B3 DRX enters the radio frequency transceiver 40 via the SDR DRX0 port.

N1 TX link: the transmission signal (N1 TX) of the second intermediate frequency band signal is output from the TX0 MB port of the radio frequency transceiver 40, via the radio frequency line, to the second intermediate frequency transmission port MB RFIN2 port (denoted as 4G MB RFIN2 in fig. 8) of the radio frequency MHB L-PA Mid device 50; after the signal is amplified by an intermediate frequency power amplifier (indicated as MB 4G PA in fig. 8) inside the radio frequency MHB L-PA Mid device 50, the amplified signal is switched to a switching unit such as 3P5T in fig. 8; the 3P5T switch is switched to the contact 4, and after being filtered by the N1 TX Filter, the switch is switched to another switch unit (such as a DP7T switch in FIG. 8); the DP7T switch is switched to contact 1 and output from the first antenna port ANT 1; via Path02 to the first combiner 81; after being combined by the first combiner 81, the N1 TX is transmitted from the first antenna ANT1 through a Path of Path 01.

N1 PRX link: a receiving signal (N1 PRX) of the second intermediate frequency signal enters from the first antenna ANT1, passes through a Path01, and reaches the first combiner 81; after being combined by the first combiner 81, the combined signal passes through a Path02 to a first antenna port ANT1 of the MHB L-PA Mid device 50; a switching unit (such as the DP7T switch in fig. 8) inside the MHB L-PA Mid device 50 switches to the contact 4, and after being filtered by the N1 RX, to a switching unit (such as the SP3T #1 switch shown in fig. 8) of a receiving circuit inside the MHB L-PA Mid device 50; the SP3T #1 switch switches the single port to a low noise amplifier (e.g., LNA1 inside the rf MHB L-PA Mid device 50 in fig. 8) path; amplified by a low noise amplifier LNA1, and then sent to another switch unit (such as a 6P6T switch in FIG. 8); the 6P6T switch is switched to contact 1 to a receiving port LNA OUT (such as LNA OUT1 in fig. 8) output of the radio frequency MHB L-PA Mid device 50; n1 PRX enters rf transceiver 40 through SDR PRX0 port.

N1 DRX link: a diversity reception signal (N1 DRX) of the second intermediate frequency band signal enters from a third antenna ANT3, passes through a Path06, and reaches a third combiner 83; after being combined by the third combiner 83, the combined signal is transmitted to a medium-high frequency antenna port MHB ANT of the LFEM device 60 through a Path 07; the SP8T switch inside LFEM device 60 switches to contact 5, after N1 RX filtering, to the first switching unit 131 of LFEM device 60 as the SPDT switch in fig. 8; the SPDT switch switches the single port to a low noise amplifier 121 (e.g., low noise amplifier LNA4 in fig. 8); after being amplified by a low noise amplifier LNA4, the low noise amplifier is switched on and off by a low noise amplifier 6P6T in the LFEM device 60; the 6P6T switch is switched to the contact 2, and the output is output from the medium-high frequency receiving port LNA OUT MHB 2; the N1 DRX enters the radio frequency transceiver device 40 via the SDR DRX2 port.

N1 PRX MIMO link: a main set MIMO receiving signal (N1 PRX MIMO) of the second intermediate frequency band signal enters from the second antenna ANT2, passes through a Path03, and reaches the second combiner 82; after being combined by the second combiner 82, the signals are routed to the first filter 71 through a Path 04; the N1 PRX MIMO is filtered by the first filter 71 to an auxiliary receiving port of the MHB L-PA Mid device 50 (shown as LMHB LNA IN1 IN fig. 8); amplified by a low noise amplifier (such as LNA5 shown in fig. 8) inside the MHB L-PA Mid device 50, and then sent to a switch unit (such as 6P6T switch in fig. 8) inside the MHB L-PA Mid device 50; the 6P6T switch switches to contact 5, outputting from a receive port LNA OUT (such as LNA OUT5 in fig. 8); n1 PRX MIMO enters the rf transceiver 40 via the SDR PRX1 port.

N1 DRX MIMO link: a diversity MIMO reception signal (N1 DRX MIMO) of the second intermediate frequency band signal enters from the fourth antenna ANT4, passes through a Path08, and reaches the fourth combiner 84; after being combined by the fourth combiner 84, the combined signal passes through a Path09 to reach the second filter 72; n1 DRX MIMO is filtered by the second filter 72 and then provided to an auxiliary receive port LNA AUX IN (denoted as LNA AUX LMB IN fig. 8) of the LFEM device 60; LFEM device 60 has a second switch unit 122 such as SP3T #5 switch to switch the single port to a low noise amplifier 121 such as LNA6 path in fig. 8; after being amplified by the low noise amplifier LNA6, the amplified signal is sent to a third switching unit 123 of the LFEM device 60 to be switched as 6P6T in fig. 8; the 6P6T switch is switched to contact 4 to output from the middle high frequency receiving port LNA OUT MHB4 port; the N1 DRX MIMO enters the rf transceiver 40 via the SDR DRX6 port.

In combination with the above B3+ N1EN-DC operating principle analysis, the frequency band configuration of each antenna port is shown in table 1.

TABLE 1

The first radio frequency transceiving system in the embodiment of the application supports a non-independent networking mode, taking a B3+ N1EN-DC combination as an example, B3 has two-path reception of PRX and DRX, and N1 has four-path reception of PRX, DRX, PRX MIMO and DRX MIMO; in addition, in the embodiment of the application, the externally-hung multi-mode multi-frequency power amplifier device is integrated into the first radio frequency front-end device, so that the occupied area of a PCB is reduced; on the other hand, the integration level of the radio frequency device is improved, so that the cost is reduced; moreover, through integration, wiring such as power supply, transmission control and the like is reduced, and the complexity of single-board layout is reduced, so that the performance of the radio frequency transceiving system is improved. The first radio frequency transceiving system IN the embodiment of the application realizes the transmission or the transmission and the reception of a multiband receiving channel and a preset first middle frequency band, and the multiband can comprise middle and high frequency bands such as B1, B4, B3, B25, B34, B66, B39, B41, B7, B40, B70, B32, B35, B75, B76, N1 and N3, low frequency bands such as B28, B20, B8 and B26, 3 auxiliary transceiving ports TRX and 6 auxiliary receiving ports LNA AUX IN for external frequency band extension, so that the communication frequency band of the radio frequency transceiving system is expanded, and the communication performance of the radio frequency transceiving system is improved.

The embodiment of the application also provides communication equipment, wherein the communication equipment is provided with the first radio frequency transceiving system, and the first radio frequency transceiving system is arranged on the communication equipment, so that the integration of the plug-in multi-mode multi-frequency power amplifier into a radio frequency front-end device is realized, a non-independent networking mode is supported, the integration level is improved, and the occupied area of a PCB is reduced; moreover, the cost is reduced due to the improvement of the integration level of the radio frequency device; moreover, through integration, wiring such as power supply, transmission control and the like is reduced, the complexity of single-board layout is reduced, and the performance of communication equipment is improved.

In order to further reduce the occupied area of the PCB, improve the integration level of a radio frequency device and reduce the cost, the embodiment of the application also provides a second radio frequency front-end device, wherein the second radio frequency front-end device integrates an external multi-mode multi-frequency power amplifier device into the radio frequency front-end device, and also integrates a preset first frequency band duplexer serving as an external circuit into the radio frequency front-end device, so that the radio frequency front-end device can support a non-independent networking mode without the external multi-mode multi-frequency power amplifier device and the preset first frequency band duplexer, and after the integration, the routing of power supply, transmission control and the like is reduced, the complexity of single-board layout is reduced, and the performances of a radio frequency transceiving system and communication equipment are improved.

Fig. 9 is a schematic structural diagram of a first embodiment of a second rf front-end device in an embodiment of the present application, configured to be used in a diversity antenna rf link, where the second rf front-end device is provided with at least an intermediate frequency transmitting port MB RFIN, an intermediate frequency auxiliary transceiving port MB INOUT, and an intermediate frequency auxiliary receiving port MB RX; the radio frequency front end device at least comprises:

the first transmitting circuit 110 is connected to the intermediate frequency transmitting port MB RFIN and the switching circuit 160, and configured to perform power amplification on the first intermediate frequency band signal from the intermediate frequency transmitting port MB RFIN and output the signal to the switching circuit 160;

a switching circuit 160, connected to the first transmitting circuit 110, the intermediate frequency auxiliary transceiving port MB INOUT, and the intermediate frequency auxiliary receiving port MB RX, for outputting the first intermediate frequency signal from the first transmitting circuit 110 from the intermediate frequency auxiliary transceiving port MB INOUT, outputting the first intermediate frequency signal received by the intermediate frequency auxiliary transceiving port MB INOUT through the intermediate frequency auxiliary receiving port MB RX, and separating a transceiving path according to a transceiving signal direction of the first intermediate frequency signal to implement single-antenna bidirectional communication;

In an exemplary embodiment, the switching circuit 160 can be a first intermediate band duplexer, wherein the first intermediate band is a band in which the first intermediate band signal is located. The first intermediate frequency band duplexer is a three-port radio frequency device, and is used for separating a transceiving path according to the transceiving signal direction of a first intermediate frequency band signal, i.e. dividing the transceiving signal of an antenna into two different signal paths according to the direction of the transceiving signal so as to realize single-antenna two-way communication.

In an exemplary example, the common port of the first middle band duplexer is preset to be connected to the middle frequency auxiliary transceiving port MB INOUT, for transmitting or receiving the first middle band signal through an antenna connected to the middle frequency auxiliary transceiving port MB INOUT; one of the output ports of the preset first intermediate band duplexer is connected to the output terminal of the first transmitting circuit 110, and is configured to output a first intermediate band signal; the other output port of the preset first intermediate band duplexer is connected to the intermediate frequency auxiliary receiving port MB RX, and is configured to output a first intermediate band signal received through the common port of the preset first intermediate band duplexer. Through presetting the first intermediate frequency band duplexer, the filtering and the isolation of the transmitting signal of the preset first intermediate frequency band and the receiving signal of the preset first intermediate frequency band are realized.

IN an exemplary example, the second rf front-end device is further provided with a medium-high frequency antenna port MHB ANT, at least three medium-high frequency receiving ports LNA OUT MHB, at least two auxiliary receiving ports LNA AUX IN; the second rf front-end device shown in fig. 9 further includes:

and the second intermediate frequency band signal is a signal of another preset intermediate frequency band in the non-independent networking mode.

IN an exemplary example, the second rf front-end device is further provided with a medium-high frequency antenna port MHB ANT, at least four medium-high frequency receiving ports LNA OUT MHB, at least three auxiliary receiving ports LNA AUX IN; the second rf front-end device shown in fig. 9 further includes:

a first receiving circuit 120 connected to the middle/high frequency receiving port LNA OUT MHB and the auxiliary receiving port LNA AUX IN, for amplifying and outputting the diversity signal of the first intermediate frequency band signal from an auxiliary receiving port LNA AUX IN to a medium and high frequency receiving port LNA OUT MHB, the diversity MIMO signal of the second intermediate frequency signal from an auxiliary receiving port LNA AUX IN is amplified and outputted to a middle and high frequency receiving port LNA OUT MHB, a first intermediate frequency signal from an auxiliary receiving port LNA AUX IN connected to the intermediate frequency auxiliary receiving port MB RX is amplified and output to an intermediate and high frequency receiving port LNA OUT MHB, amplifying diversity signals of at least a second intermediate frequency signal in a plurality of intermediate and high frequency signals received from a receiving path and outputting the diversity signals to an intermediate and high frequency receiving port LNA OUT MHB;

The embodiment shown in fig. 9 of the present application provides a second rf front-end device that supports receiving and transmitting of multiple different bands of intermediate frequency signals and supports a non-independent networking mode. The plurality of mid-band signals may comprise mid-band signals of different frequency bands in a 4G signal, a 5G NR signal or a 6G signal. Illustratively, the frequency bands of the plurality of intermediate frequency band signals include at least B1, B25, B34, B66, B39 and N3 frequency bands, as well as a preset first intermediate frequency band and a preset second intermediate frequency band. In one embodiment, the preset first intermediate frequency range may include, but is not limited to, one of the following: b3, B1, etc., and accordingly, the predetermined second intermediate frequency band may include, but is not limited to, one of the following: n1, N3, etc. In one embodiment, the preset first intermediate frequency range may include, but is not limited to, one of the following: n1, N3, etc., and accordingly, the predetermined second intermediate frequency band may include, but is not limited to, one of the following: b3, B1, etc. In an embodiment, the preset first middle band in the embodiment of the present application may be a B3 band, and accordingly, the preset second middle band may be replaced with a second high band, i.e., a high band signal such as an N41 band.

In order to avoid redundant description, only different parts of the second rf front-end device and the first rf front-end device are described below, and the same parts will not be described again.

The second rf front-end device shown IN fig. 9 may be understood as a package structure, and as shown IN fig. 9, IN one embodiment, the second rf front-end device is provided with at least an intermediate frequency transmitting port MB RFIN for connecting a radio frequency transceiver and at least three (or four) intermediate and high frequency receiving ports LNA OUT MHB, an intermediate and high frequency antenna port MHB ANT for connecting an antenna, and an intermediate frequency auxiliary transmitting and receiving port MB INOUT, an intermediate frequency auxiliary receiving port MB RX, and at least two (or three) auxiliary receiving ports LNA AUX IN for connecting with external devices. The medium-high frequency receiving port LNA OUT MHB, the medium-frequency transmitting port MB RFIN, the medium-high frequency antenna port MHB ANT, the medium-frequency auxiliary receiving and transmitting port MB INOUT, the medium-frequency auxiliary receiving port MB RX, and the auxiliary receiving port LNA AUX IN may be understood as radio frequency pin terminals of a radio frequency front-end device, and are used for being connected with each external device. In one embodiment, the medium-high frequency receiving port LNA OUT MHB, the medium-frequency transmitting port MB RFIN may be used for connection with a radio frequency transceiver; the medium-high frequency antenna port MHB ANT may be for connection to an antenna and may receive a plurality of radio frequency signals including diversity signals of the second medium frequency band signal; the intermediate frequency auxiliary receiving and transmitting port MB INOUT is connected with an external device to realize the transmission and the reception of a first intermediate frequency band signal; the intermediate frequency auxiliary receiving port MB RX is connected with an external device to realize receiving and forwarding of the first intermediate frequency band signal; when the number of the auxiliary receiving ports LNA AUX IN is two, the two auxiliary receiving ports LNA AUX IN are respectively connected with respective external circuits to receive diversity signals of the first intermediate frequency band signal and receive diversity MIMO signals of the second intermediate frequency band signal; when the auxiliary receiving ports LNA AUX IN include three, two of the auxiliary receiving ports LNA AUX IN are respectively connected to respective external circuits to implement receiving of diversity signals of the first intermediate frequency band signal and receiving of diversity MIMO signals of the second intermediate frequency band signal, and one of the auxiliary receiving ports LNA AUX IN is directly connected to the intermediate frequency auxiliary receiving port MB RX through a radio frequency line to implement receiving of the first intermediate frequency band signal.

In an illustrative example, as shown in fig. 9, a radio frequency front end device may include: a first transmitting circuit 110, a switching circuit 160, a first receiving circuit 140, and a first switching circuit 130.

In an exemplary example, as shown in fig. 9, an input terminal of the first transmitting circuit 110 is connected to the intermediate frequency transmitting port MB RFIN, and amplifies the first intermediate frequency band signal received by the intermediate frequency transmitting port MB RFIN; the output end of the first transmitting circuit 110 is connected to an output port of the switching circuit 160, the common port of the switching circuit 160 is connected to the intermediate frequency auxiliary transceiving port MB INOUT, and the amplified first intermediate frequency signal is output from the intermediate frequency auxiliary transceiving port MB INOUT via the switching circuit 160. The first transmit circuitry 110 may be provided with a transmit path to support transmission of the first mid-band signal. Illustratively, the frequency band corresponding to the first intermediate frequency band signal may include, for example, a B3 or B1 frequency band, and may also include, for example, an N1 or N3 frequency band. In one embodiment, the first transmit path may include: the first intermediate frequency transmitting port MB RFIN1, the first transmitting circuit 110, the switching circuit 160, the intermediate frequency auxiliary transceiving port MB INOUT and the antenna form a transmitting path together.

In an exemplary example, as shown in fig. 9, the implementation of the first receiving circuit 140 and the first switching circuit 130 can refer to the related description in fig. 1, and is not repeated here.

The second radio frequency front-end device shown in fig. 9 of the application is used for a diversity antenna radio frequency link, a non-independent networking mode can be supported without an external multi-mode multi-frequency power amplifier device and a duplexer, the occupied area of a Printed Circuit Board (PCB) is reduced, the integration level of a radio frequency device is improved, the cost is reduced, wiring such as power supply and transmission control is reduced after integration, the complexity of single-board layout is reduced, and therefore the performance of a radio frequency transceiving system and communication equipment is improved.

Fig. 10 is a schematic structural diagram of a second embodiment of a second rf front-end device in the embodiment of the present application, and specific implementation can be described with reference to fig. 2, which is not described herein again.

Fig. 11 is a schematic structural diagram of a third embodiment of the second rf front-end device in the embodiment of the present application, and specific implementation of the third embodiment may be described with reference to fig. 3, which is not described herein again, and is different from the embodiment shown in fig. 3 in that the coupling circuit 180 in the embodiment shown in fig. 11 is disposed in the rf path between the switching circuit 160 and the intermediate frequency auxiliary transceiver port MB INOUT.

The embodiment of the present application provides that the second rf front-end device is an LFEM device. The LFEM device can support the receiving of intermediate frequency signals, high frequency signals and low frequency signals of a plurality of different frequency bands, the transmitting or receiving of a preset first intermediate frequency band signal, the receiving switching control among the intermediate frequency signals is realized, the receiving switching control among the high frequency signals is realized, the receiving switching control among the low frequency signals is realized, and a non-independent networking mode is supported. The plurality of middle and high frequency signals may include middle and high frequency signals of different frequency bands in the 4G signal and the 5GNR signal. Specifically, the frequency bands of the plurality of intermediate frequency signals and the frequency bands of the plurality of high frequency signals may include frequency bands of B1, B4, B3, B25, B34, B66, B39, B41, B7, B40, B70, B32, B35, B75, B76, N1, N3, and the like. The plurality of low frequency band signals may include frequency bands of B28, B20, B8, B26, etc.

Fig. 12 is a schematic structural diagram of a first embodiment of a second LFEM device according to an embodiment of the present invention, and as shown IN fig. 12, the second LFEM device is provided with an intermediate frequency transmitting port MB RFIN for connecting with a radio frequency transceiver, at least three intermediate and high frequency receiving ports LNA OUT MHB, an intermediate frequency auxiliary transmitting/receiving port MB INOUT for connecting with an external device, an intermediate and high frequency auxiliary receiving port MB RX for connecting with an antenna, an intermediate and high frequency antenna port MHB ANT for connecting with an antenna, and at least two auxiliary receiving ports LNA AUX IN. The middle-high frequency receiving port LNA OUT MHB, the middle-high frequency transmitting port MB RFIN, the middle-high frequency auxiliary transceiving port MB INOUT, the middle-high frequency auxiliary receiving port MB RX, the middle-high frequency antenna port MHB ANT, and the auxiliary receiving port LNA AUX IN may be understood as radio frequency pin terminals of the second LFEM device, and are used to connect with each external device. In one embodiment, the medium-high frequency receiving port LNA OUT MHB, the medium-frequency transmitting port MB RFIN may be used for connection with a radio frequency transceiver; the medium-high frequency antenna port MHB ANT may be configured to connect to an antenna, and may transmit each radio frequency signal of the diversity signal including the second medium frequency band signal received by the antenna to the second LFEM device; the intermediate frequency auxiliary receiving and transmitting port MB INOUT is connected with an external device so as to realize the transmission and the reception of a first intermediate frequency signal; the intermediate frequency auxiliary receiving port MB RX is connected with an external device to realize receiving and forwarding of the first intermediate frequency band signal; the auxiliary receiving port LNA AUX IN is connected to other external devices, and transmits diversity signals of the first intermediate frequency band signal and diversity MIMO signals of the second intermediate frequency band signal from other external devices to the LFEM device.

In an illustrative example, as shown in fig. 12, the first transmission circuit 110 may include at least: the first if power amplifier 111 has an input end connected to the if transmit port MB RFIN, an output end of the first if power amplifier 111 is connected to an output port of the first if duplexer 151, and a common port of the first if duplexer 151 is connected to the if auxiliary transmit/receive port MB INOUT, and configured to perform power amplification processing on the first if signal received through the if transmit port MB RFIN, and output the first if signal from the if auxiliary transmit/receive port MB INOUT through the first if duplexer 151. In one embodiment, the first mid-band signal may include a B3 or B1 band signal, and may also include an N1 or N3 band signal. In one embodiment, the first transmit path may include: the intermediate frequency transmitting port MB RFIN, the first intermediate frequency power amplifier 111, the first intermediate frequency duplexer 151, the intermediate frequency auxiliary transceiving port MB INOUT and the antenna jointly form a transmitting path.

In an exemplary example, as shown in fig. 12, the first switching circuit 130 includes a first switching unit 131. In one embodiment, the first switch unit 131 may be a multi-channel selection switch 131 such as SP 7T. A first port of the first switching unit 131 is connected to the medium-high frequency antenna port MHB ANT; the second ports of the first switch unit 131 are respectively connected to the first filtering units 1131.

The second LFEM shown in fig. 12 differs from the first LFEM shown in fig. 4 in that: in this embodiment, the first intermediate frequency signal is received through the intermediate frequency auxiliary receiving/transmitting port MB INOUT, enters the switching circuit 160, and is received from the intermediate frequency auxiliary receiving port MB RX and forwarded to the external receiving device.

In an illustrative example, as shown in fig. 12, the first receiving circuit 120 may include: at least three low noise amplifiers 121, at least three second switching units 122, a third switching unit 123; wherein the content of the first and second substances,

an input end of a low noise amplifier 121 (e.g., the low noise amplifier LNA4 in the embodiment shown in fig. 12) is connected to a first port of a second switching unit 122 (e.g., the second switching unit SPDT in the embodiment shown in fig. 12), a second port of the second switching unit SPDT is connected to the first switching unit 131, an output end of the low noise amplifier LNA4 is connected to a second port of the third switching unit 123, and the low noise amplifier LNA4 is configured to amplify the diversity signal of the second if signal and output the amplified diversity signal to a if receiving port LNA OUT MHB (e.g., the if receiving port LNA OUT MHB2 in the embodiment shown in fig. 12);

an input terminal of a low noise amplifier 121 (e.g., the low noise amplifier LNA6 IN the embodiment shown IN fig. 12) is connected to a first port of a second switch unit 122 (e.g., the second switch unit SP3T #5 IN the embodiment shown IN fig. 12), a second port of the second switch unit SP3T #5 is connected to an auxiliary receiving port LNA AUX IN1 (e.g., the auxiliary receiving port LNA AUX LMB IN the embodiment shown IN fig. 12), and an output terminal of the low noise amplifier LNA6 is connected to another second terminal of the third switch unit 123, so as to amplify the diversity MIMO signal of the received second intermediate frequency band signal and output the amplified diversity MIMO signal to another intermediate and high frequency receiving port LNA OUT MHB (e.g., the intermediate and high frequency receiving port LNA OUT MHB4 IN the embodiment shown IN fig. 12);

an input terminal of a low noise amplifier 121 (e.g., the low noise amplifier LNA3 IN the embodiment shown IN fig. 12) is connected to a first port of a second switching unit 122 (e.g., the second switching unit SP3T #3 IN the embodiment shown IN fig. 12), a second port of the second switching unit SP3T #3 is connected to an auxiliary receiving port LNA AUX IN5 (e.g., the auxiliary receiving port LNA AUX HB4 IN the embodiment shown IN fig. 12), and an output terminal of the low noise amplifier LNA3 is connected to a second port of the third switching unit 123, so as to amplify the diversity signal of the first intermediate frequency signal and output the amplified diversity signal to a high frequency receiving port LNA OUT MHB (e.g., the high frequency receiving port LNA OUT MHB1 IN the embodiment shown IN fig. 12) through the third switching unit 123.

In an exemplary example, as shown in fig. 12, specific implementations of other parts of the first receiving circuit 120, the first switch circuit 130, the second receiving circuit 140, the second switch circuit 150, the coupling circuit 180, and the first control circuit 170 may refer to the embodiment shown in fig. 4, and are not described herein again.

In the embodiment of the application, the first transmitting circuit 110 and the switching circuit 160 are integrated in the second LFEM, so that an external multi-mode multi-frequency power amplifier device and a duplexer are not required, the occupied area of a PCB is reduced, the integration level of a radio frequency device is improved, the cost is reduced, after the integration, wiring such as power supply and transmission control is reduced, the complexity of layout of a single board is reduced, and the performance of a radio frequency transceiving system and communication equipment is improved.

Based on the trend of miniaturization of the motherboard of the terminal device, the embodiment of the present application provides a second LFEM device, whose composition is shown in fig. 12. The whole chip integrates a multi-band receiving channel, a preset first middle-band transmitting channel and a receiving forwarding channel, and comprises frequency bands such as B1, B3, B34, B39, B40, B41, N1 and N3; and a plurality of intermediate frequency auxiliary receiving ports, a plurality of low frequency auxiliary receiving and transmitting ports and a plurality of low frequency auxiliary receiving ports for external frequency band extension.

Based on the second LFEM device as shown in fig. 12, a non-independent networking mode may be supported. For example, to implement dual connection of 4G and 5G, the first intermediate frequency band may be, for example, a B3 frequency band, and the second intermediate frequency band may be, for example, an EN-DC combination of B3+ N1 of an N1 frequency band.

The transmission path of the B3 frequency band is as follows:

the intermediate frequency transmission port MB RFIN → the first intermediate frequency power amplifier 111 → the first intermediate band duplexer 161 → the intermediate frequency auxiliary transceiving port MB INOUT → the antenna.

The diversity reception path of the N1 band is as follows:

The diversity MIMO receive path for the N1 band is as follows:

The diversity reception path of the B3 band is as follows:

In the embodiment shown in fig. 12, the receive and forward path further including the B3 frequency band is as follows:

antenna → intermediate frequency auxiliary transceiving port MB INOUT → first intermediate band duplexer 161 → intermediate frequency auxiliary receiving port MB RX → external chip.

Fig. 13 is a schematic structural diagram of a second embodiment of a second LFEM device in an embodiment of the present application, and as shown in fig. 13, the first LFEM device in the second embodiment is different from the second LFEM device in the first embodiment shown in fig. 12 in that: the medium and high frequency receiving ports LNA OUT MHB include at least four, and the auxiliary receiving port LNA AUX IN includes at least three. Other components and operation principles of the second LFEM device in the second embodiment are the same as those in fig. 12, and are not described herein again, and only different parts are described in detail below.

In an illustrative example, as shown in fig. 13, the first receiving circuit 120 may include: at least four low noise amplifiers 121, at least four second switching units 122, a third switching unit 123; wherein the content of the first and second substances,

an input end of a low noise amplifier 121 (e.g., the low noise amplifier LNA4 in the embodiment shown in fig. 13) is connected to a first port of a second switching unit 122 (e.g., the second switching unit SPDT in the embodiment shown in fig. 13), a second port of the second switching unit SPDT is connected to the first switching circuit 130, an output end of the low noise amplifier LNA4 is connected to a second port of the third switching unit 123, and the low noise amplifier LNA4 is configured to amplify the diversity signal of the second if signal and output the amplified diversity signal to a if receiving port LNA OUT MHB (e.g., the if receiving port LNA OUT MHB2 in the embodiment shown in fig. 13);

an input terminal of a low noise amplifier 121 (e.g., the low noise amplifier LNA6 IN the embodiment shown IN fig. 13) is connected to a first port of a second switch unit 122 (e.g., the second switch unit SP3T #5 IN the embodiment shown IN fig. 13), a second port of the second switch unit SP3T #5 is connected to an auxiliary receiving port LNA AUX IN1 (e.g., the auxiliary receiving port LNA AUX LMB IN the embodiment shown IN fig. 13), and an output terminal of the low noise amplifier LNA6 is connected to another second terminal of the third switch unit 123, so as to amplify the diversity MIMO signal of the received second intermediate frequency band signal and output the amplified diversity MIMO signal to another intermediate and high frequency receiving port LNA OUT MHB (e.g., the intermediate and high frequency receiving port LNA OUT MHB4 IN the embodiment shown IN fig. 13);

an input terminal of a low noise amplifier 121 (e.g., the low noise amplifier LNA8 IN the embodiment shown IN fig. 13) is connected to a first port of a second switching unit 122 (e.g., the second switching unit SP3T #7 IN the embodiment shown IN fig. 13), a second port of the second switching unit SP3T #7 is connected to an auxiliary receiving port LNA AUX IN7 (e.g., the auxiliary receiving port LNA AUX MHB6 IN the embodiment shown IN fig. 13) connected to the intermediate frequency auxiliary receiving port MB RX, and an output terminal of the low noise amplifier LNA8 is connected to another second port of the third switching unit 123, and is configured to amplify the first intermediate frequency signal and output the amplified signal to another intermediate frequency receiving port LNA OUT MHB (e.g., the intermediate frequency receiving port OUT MHB6 IN the embodiment shown IN fig. 13) through the third switching unit 123;

an input terminal of a low noise amplifier 121 (e.g., the low noise amplifier LNA3 IN the embodiment shown IN fig. 13) is connected to a first port of a second switching unit 122 (e.g., the second switching unit SP3T #3 IN the embodiment shown IN fig. 13), a second port of the second switching unit SP3T #3 is connected to an auxiliary receiving port LNA AUX IN5 (e.g., the auxiliary receiving port LNA AUX HB4 IN the embodiment shown IN fig. 13), and an output terminal of the low noise amplifier LNA3 is connected to a second port of the third switching unit 123, so as to amplify the diversity signal of the first intermediate frequency signal and output the amplified diversity signal to a high frequency receiving port LNA OUT MHB (e.g., the high frequency receiving port LNA OUT MHB1 IN the embodiment shown IN fig. 13).

Based on the second LFEM device as shown in fig. 13, a non-independent networking mode may be supported. For example, to implement dual connection of 4G and 5G, the first intermediate frequency band may be, for example, a B3 frequency band, and the second intermediate frequency band may be, for example, an EN-DC combination of B3+ N1 of an N1 frequency band.

The transmission path of the B3 frequency band is as follows:

The receiving path of the B3 frequency band is as follows:

antenna → middle frequency auxiliary transceiving port MB INOUT → first middle band duplexer 161 → middle frequency auxiliary receiving port MB RX → auxiliary receiving port LNA AUX IN7 (i.e. auxiliary receiving port LNA AUX MHB6) → a second switch unit 122 (e.g. SP3T #7) → low noise amplifier LNA8 → contact 6 of third switch unit 123 → high frequency receiving port LNA OUT MHB6 → radio frequency transceiver.

The diversity reception path of the N1 band is as follows:

The diversity MIMO receive path for the N1 band is as follows:

The diversity reception path of the B3 band is as follows:

The second LFEM device provided by the embodiment of the application can support a non-independent networking mode without an external multi-mode multi-frequency power amplifier device and a duplexer, reduces the occupied area of a PCB (printed circuit board), improves the integration level of a radio frequency device, reduces the cost, reduces the wiring of power supply, transmission control and the like after integration, reduces the complexity of single board layout, and improves the performance of a radio frequency transceiving system and communication equipment.

In order to meet the requirement of the 5G MB MIMO function, an embodiment of the present application further provides a radio frequency transceiving system, and the radio frequency transceiving system is implemented by the second LFEM and the radio frequency MHB L-PA Mid device provided in the embodiment of the present application. The radio frequency MHB L-PA Mid device in the embodiment of the present application at least includes: a first antenna port ANT1, one or two auxiliary receive ports LNA IN, and corresponding transmit circuitry, receive circuitry, and switching circuitry for supporting at least transmit and receive processing of a plurality of intermediate frequency signals. It should be noted that the specific implementation of the radio frequency MHB L-PA Mid device is not used to limit the scope of the present application.

Fig. 14 is a schematic structural diagram of a first embodiment of a second rf transceiving system in an embodiment of the present application, and fig. 15 is a schematic structural diagram of a second embodiment of the second rf transceiving system in the embodiment of the present application, where as shown in fig. 14 and fig. 15, the second rf transceiving system at least includes: a first antenna ANT1, a second antenna ANT2, a third antenna ANT3, a fourth antenna ANT4, a radio frequency transceiver 40, a second radio frequency front end device (such as LFEM device 60) and a radio frequency MHB L-PA Mid device 50 in any of the embodiments of fig. 9-13, a second combiner 82, a fourth combiner 84, a first filter 71, a second filter 72, and a third filter 73; wherein the content of the first and second substances,

the radio frequency transceiver 40 is connected to the second antenna ANT2 through the second radio frequency front end device 60, the radio frequency MHB PA Mid device 50, the first filter 71 and the second combiner 82 to form a transmitting channel of the first intermediate frequency band signal, a main set receiving channel of the first intermediate frequency band signal, and a main set MIMO receiving channel of the second intermediate frequency band signal;

the radio frequency transceiver 40 is connected to the third antenna ANT3 through the second radio frequency front end device 60 to form a diversity receiving channel of the medium and high frequency band signal at least including the second medium frequency band signal;

the radio frequency transceiver 40 is connected to a fourth antenna ANT4 through a second radio frequency front end device 60, a second filter 72, a third filter 73 and a fourth combiner 84, so as to form a diversity receiving channel for the first intermediate frequency band signal and a diversity MIMO receiving channel for the second intermediate frequency band signal;

In one embodiment, as shown in fig. 14, the first antenna ANT1 may be used for transmission of the second Mid-band signal and reception of the main set of the second Mid-band signal, and the first antenna ANT1 is connected to the first antenna port ANT1 of the radio frequency MHB L-PA Mid device 50. The second antenna ANT2 may be configured to transmit a first intermediate frequency signal, receive a main set of the first intermediate frequency signal, and receive a main set MIMO of a second intermediate frequency signal, the second antenna ANT2 is connected to the second end of the second combiner 82, a first port of the second combiner 82 is connected to an auxiliary receiving port LNA IN5 of the radio frequency MHB L-PA Mid device 50 through the first filter 71, and is configured to receive the main set MIMO of the second intermediate frequency signal, and another first port of the second combiner 82 is connected to an intermediate frequency auxiliary receiving/transmitting port MB INOUT of the LFEM device 60, and is configured to transmit the first intermediate frequency signal; the intermediate frequency auxiliary receiving port MB RX of the LFEM device 60 is connected to another auxiliary receiving port LNA IN6 of the radio frequency MHB L-PA Mid device 60, the first intermediate frequency band signal from the second antenna ANT2 can be received through the second combiner 82 and the intermediate frequency auxiliary transceiving port MB INOUT of the LFEM device 60, and the received first intermediate frequency band signal is received through the intermediate frequency auxiliary receiving port MB RX of the LFEM device 60 and forwarded to an auxiliary receiving port LNA IN6 of the radio frequency MHB L-PA Mid device 50, so as to implement main-set reception of the first intermediate frequency band signal. The third antenna ANT3 may be used to implement diversity reception of the second mid-band signal, and the third antenna ANT3 is connected to a mid-high frequency antenna port MHB ANT of the LFEM device 60. The fourth antenna ANT4 may be configured to implement diversity reception of a first intermediate frequency signal and diversity MIMO reception of a second intermediate frequency signal, the fourth antenna ANT4 is connected to the second end of the fourth combiner 84, a first port of the fourth combiner 84 is connected to an auxiliary receiving port LNA AUX IN1 of the LFEM device 60 through the second filter 72, and is configured to implement diversity reception of the second intermediate frequency signal, and another first port of the fourth combiner 84 is connected to another auxiliary receiving port LNA AUX IN5 of the LFEM device 60 through the third filter 73, and is configured to implement diversity reception of the first intermediate frequency signal. It should be noted that the port in the embodiment is only an example, and is not used to limit the protection scope of the present application.

In one embodiment, as shown in fig. 15, the first antenna ANT1 may be used for transmission of the second Mid-band signal and reception of the main set of the second Mid-band signal, and the first antenna ANT1 is connected to the first antenna port ANT1 of the radio frequency MHB L-PA Mid device 50. The second antenna ANT2 may be configured to transmit a first intermediate frequency signal, receive a main set of the first intermediate frequency signal, and receive a main set MIMO of a second intermediate frequency signal, the second antenna ANT2 is connected to the second end of the second combiner 82, a first port of the second combiner 82 is connected to an auxiliary receiving port LNA IN5 of the radio frequency MHB L-PA Mid device 50 through the first filter 71, and is configured to receive the main set MIMO of the second intermediate frequency signal, and another first port of the second combiner 82 is connected to an intermediate frequency auxiliary receiving/transmitting port MB INOUT of the LFEM device 60, and is configured to transmit the first intermediate frequency signal; the intermediate frequency auxiliary receiving port MB RX of the LFEM device 60 is connected to an auxiliary intermediate and high frequency receiving port LNA AUX IN6 of the LFEM device 60, so that the second combiner 82 and the intermediate frequency auxiliary receiving and transmitting port MB INOUT of the LFEM device 60 can also receive the first intermediate frequency band signal from the second antenna ANT2, and the received first intermediate frequency band signal is received from the intermediate frequency auxiliary receiving port MB RX of the LFEM device 60 via the radio frequency line and forwarded to an auxiliary receiving port LNA AUX IN6 of the LFEM device 60, thereby realizing the main receiving of the first intermediate frequency band signal. The third antenna ANT3 may be used to implement diversity reception of the second mid-band signal, and the third antenna ANT3 is connected to a mid-high frequency antenna port MHB ANT of the LFEM device 60. The fourth antenna ANT4 may be configured to implement diversity reception of a first intermediate frequency signal and diversity MIMO reception of a second intermediate frequency signal, the fourth antenna ANT4 is connected to the second end of the fourth combiner 84, a first port of the fourth combiner 84 is connected to an auxiliary receiving port LNA AUX IN1 of the LFEM device 60 through the second filter 72, and is configured to implement diversity reception of the second intermediate frequency signal, and another first port of the fourth combiner 84 is connected to another auxiliary receiving port LNA AUX IN5 of the LFEM device 60 through the third filter 73, and is configured to implement diversity reception of the first intermediate frequency signal. It should be noted that the port in the embodiment is only an example, and is not used to limit the protection scope of the present application.

In the second radio frequency transceiving system provided by the embodiment of the application, on one hand, because the second radio frequency front-end device is integrated with the multi-mode multi-frequency power amplifier and the duplexer, a non-independent networking mode can be supported without externally hanging the multi-mode multi-frequency power amplifier device and the duplexer, and the occupied area of a PCB is reduced; on the other hand, the integration level of the radio frequency device is improved, so that the cost is reduced; moreover, through integration, wiring such as power supply, transmission control and the like is reduced, and the complexity of single-board layout is reduced, so that the performance of the radio frequency transceiving system is improved.

In an exemplary embodiment, the present application further provides a radio frequency transceiving system. As shown in fig. 14-16, the radio frequency transceiving system may include an antenna group, a radio frequency MHB L-PA Mid device 50, a radio frequency transceiver 40, an LFEM device 60, a plurality of filters, a plurality of switching modules, and a plurality of combiners.

Fig. 16 is a schematic structural diagram of a third embodiment of a second radio frequency transceiving system in an embodiment of the present application, where the second radio frequency transceiving system shown in fig. 16 further includes a radio frequency front end device for supporting transceiving processing of radio frequency signals of multiple low frequency bands, and as shown in fig. 16, the radio frequency front end device may be a radio frequency LB PA Mid device. It should be noted that, the specific implementation of the radio frequency LB PA Mid device in the embodiment of the present application is not used to limit the protection scope of the present application.

Based on the second rf transceiving system shown in fig. 16 and combined with fig. 12 and 14, the operating principle of B3+ N1EN-DC is analyzed as follows by taking the preset first intermediate frequency band as the B3 frequency band and the preset second intermediate frequency band as the N1 frequency band as an example.

B3 TX link: a transmission signal (B3 TX1) of the first intermediate frequency band signal is output from the TX1 MB port of the rf transceiver 40 to the intermediate frequency transmission port MB RFIN port (denoted as 4G MB RFIN in fig. 16) of the LFEM device 60 through the rf line; after the signal is amplified by the first intermediate frequency power amplifier 111 (shown as MB 4G PA in fig. 16), the amplified signal is sent to the switching circuit 160, that is, the B3 Duplexer duplex 1 in fig. 16, filtered by the B3 TX Filter, and then sent to the intermediate frequency auxiliary transceiving port MB INOUT port for output, and then sent to the second combiner 82 through the Path 05; after being combined by the second combiner 82, the B3 TX1 transmits from the second antenna ANT2 via Path 03.

B3 PRX link: a receiving signal (B3 RX1) of the first intermediate frequency band signal enters from the second antenna ANT2, passes through a Path03, and reaches the second combiner 82; after being combined by the second combiner 82, the combined signal is transmitted to an intermediate frequency auxiliary receiving and transmitting port MB INOUT of the LFEM device 60 through a Path05, filtered by a B3 RX Filter of a B3 Duplexer duplex 1, output from an intermediate frequency auxiliary receiving port MB RX of the LFEM device 60, and transmitted to an auxiliary receiving port LNA IN6 (shown as LMHB LNA IN2 IN fig. 16) of the MHB L-PA Mid device 50 through a Path 11; amplified by a low noise amplifier such as LNA6 in fig. 16, and then switched by a third switching unit 123 such as 6P6T in fig. 16; 6P6T to contact 6, output from receive port LNA OUT 6; b3 RX1 enters the rf transceiver 40 via the SDR PRX3 port.

B3 DRX link: a diversity received signal (B3 DRX) of the first mid-band signal enters from the fourth antenna ANT4, passes through a Path08, and reaches the fourth combiner 84; the fourth combiner 84 is combined and then passes through Path10 to the third filter 73; the B3 DRX is filtered by the third filter 73 and then goes to an auxiliary receiving port LNA AUX IN (shown as LNA AUX HB4 IN fig. 16) of the LFEM device 60; a second switch unit 122 (e.g., SP3T #3 switch in fig. 16) of the LFEM device 60 switches the single port to a low noise amplifier 121 (e.g., LNA3 in fig. 16) path of the LFEM device 60; amplified by the low noise amplifier LNA3, and then sent to the third switching unit 123 of the LFEM device 60 (e.g., 6P6T switch in fig. 16); the 6P6T switch is switched to the contact 1 and is output from the middle high frequency receiving port LNA OUT MHB1 port; the B3 DRX enters the radio frequency transceiver 40 via the SDR DRX0 port.

N1 TX link: the transmission signal (N1 TX) of the second intermediate frequency band signal is output from the TX0 MB port of the radio frequency transceiver 40, via the radio frequency line, to the second intermediate frequency transmission port MB RFIN2 port (denoted as 4G MB RFIN2 in fig. 16) of the radio frequency MHB L-PA Mid device 50; after the signal is amplified by an intermediate frequency power amplifier (indicated as MB 4G PA in fig. 16) inside the radio frequency MHB L-PA Mid device 50, the amplified signal is switched to a switching unit such as 3P5T in fig. 16; the 3P5T switch is switched to the contact 4, filtered by the N1 TX Filter, and then switched to another switch unit (such as the DP7T switch in fig. 16); the DP7T switch is switched to contact 1 and output from the first antenna port ANT 1; via Path02 to the first combiner 81; after being combined by the first combiner 81, the N1 TX is transmitted from the first antenna ANT1 through a Path of Path 01.

N1 PRX link: a receiving signal (N1 PRX) of the second intermediate frequency signal enters from the first antenna ANT1, passes through a Path01, and reaches the first combiner 81; after being combined by the first combiner 81, the combined signal passes through a Path02 to a first antenna port ANT1 of the MHB L-PA Mid device 50; a switching unit (such as the DP7T switch in fig. 16) inside the MHB L-PA Mid device 50 switches to the contact 4, and after being filtered by the N1 RX, to a switching unit (such as the SP3T #1 switch shown in fig. 16) of a receiving circuit inside the MHB PA Mid device 50; the SP3T #1 switch switches the single port to a low noise amplifier (e.g., LNA1 within the rf MHB L-PA Mid device 50 in fig. 16) path; amplified by a low noise amplifier LNA1, and then sent to another switch unit (such as a 6P6T switch in FIG. 16); the 6P6T switch is switched to contact 1 to a receiving port LNA OUT (such as LNA OUT1 in fig. 16) output of the radio frequency MHB L-PA Mid device 50; n1 PRX enters rf transceiver 40 through SDR PRX0 port.

N1 DRX link: a diversity reception signal (N1 DRX) of the second intermediate frequency band signal enters from a third antenna ANT3, passes through a Path06, and reaches a third combiner 83; after being combined by the third combiner 83, the combined signal is transmitted to a medium-high frequency antenna port MHB ANT of the LFEM device 60 through a Path 07; the SP8T switch inside LFEM device 60 switches to contact 5, after N1 RX filtering, to the first switching unit 131 of LFEM device 60 as the SPDT switch in fig. 16; the SPDT switch switches the single port to a low noise amplifier 121 (e.g., low noise amplifier LNA4 in fig. 16) path; after being amplified by a low noise amplifier LNA4, the low noise amplifier is switched on and off by a low noise amplifier 6P6T in the LFEM device 60; the 6P6T switch is switched to the contact 2, and the output is output from the medium-high frequency receiving port LNA OUT MHB 2; the N1 DRX enters the radio frequency transceiver device 40 via the SDR DRX2 port.

N1 PRX MIMO link: a main set MIMO receiving signal (N1 PRX MIMO) of the second intermediate frequency band signal enters from the second antenna ANT2, passes through a Path03, and reaches the second combiner 82; after being combined by the second combiner 82, the signals are routed to the first filter 71 through a Path 04; the N1 PRX MIMO is filtered by the first filter 71 to an auxiliary receiving port of the MHB L-PA Mid device 50 (shown as LMHB LNA IN1 IN fig. 16); amplified by a low noise amplifier (such as LNA5 shown in fig. 16) inside the MHB L-PA Mid device 50, and then sent to a switch unit (such as 6P6T switch in fig. 16) inside the MHB L-PA Mid device 50; the 6P6T switch switches to contact 5, outputting from a receive port LNA OUT (such as LNA OUT5 in fig. 16); n1 PRX MIMO enters the rf transceiver 40 via the SDR PRX1 port.

N1 DRX MIMO link: a diversity MIMO reception signal (N1 DRX MIMO) of the second intermediate frequency band signal enters from the fourth antenna ANT4, passes through a Path08, and reaches the fourth combiner 84; after being combined by the fourth combiner 84, the combined signal passes through a Path09 to reach the second filter 72; n1 DRX MIMO is filtered by the second filter 72 and then provided to an auxiliary receive port LNA AUX IN (denoted as LNA AUX LMB IN fig. 16) of the LFEM device 60; LFEM device 60 a second switch unit 122 such as SP3T #5 switch switches the single port to a low noise amplifier 121 such as LNA6 path in fig. 16; after being amplified by the low noise amplifier LNA6, the amplified signal is sent to a third switching unit 123 of the LFEM device 60 to be switched as 6P6T in fig. 16; the 6P6T switch is switched to contact 4 to output from the middle high frequency receiving port LNA OUT MHB4 port; the N1 DRX MIMO enters the rf transceiver 40 via the SDR DRX6 port.

The second radio frequency transceiving system in the embodiment of the application supports a non-independent networking mode, taking a B3+ N1EN-DC combination as an example, B3 has two-path reception of PRX and DRX, and N1 has four-path reception of PRX, DRX, PRX MIMO and DRX MIMO; in addition, in the embodiment of the application, the externally-hung multi-mode multi-frequency power amplifier device and the duplexer are integrated into the second radio frequency front-end device, so that the occupied area of a PCB is reduced; on the other hand, the integration level of the radio frequency device is improved, so that the cost is reduced; moreover, through integration, wiring such as power supply, transmission control and the like is reduced, and the complexity of single-board layout is reduced, so that the performance of the radio frequency transceiving system is improved. The second radio frequency transceiving system IN the embodiment of the application realizes the transmission or the transmission and the reception of a multiband receiving channel and a preset first middle frequency band, and the multiband can comprise middle and high frequency bands such as B1, B4, B3, B25, B34, B66, B39, B41, B7, B40, B70, B32, B35, B75, B76, N1 and N3, low frequency bands such as B28, B20, B8 and B26, 3 auxiliary transceiving ports TRX and 6 auxiliary receiving ports LNA AUX IN for external frequency band extension, so that the communication frequency band of the radio frequency transceiving system is expanded, and the communication performance of the radio frequency transceiving system is improved.

The embodiment of the application also provides communication equipment, wherein the communication equipment is provided with the second radio frequency transceiving system, and the second radio frequency transceiving system is arranged on the communication equipment, so that the plug-in multi-mode multi-frequency power amplifier is integrated in a radio frequency front-end device, a non-independent networking mode is supported, the integration level is improved, and the occupied area of a PCB is reduced; moreover, the cost is reduced due to the improvement of the integration level of the radio frequency device; moreover, through integration, wiring such as power supply, transmission control and the like is reduced, the complexity of single-board layout is reduced, and the performance of communication equipment is improved.

In order to further reduce the complexity of external layout wiring of the radio frequency front-end device, the embodiment of the application further provides a third radio frequency front-end device, and the third radio frequency front-end device integrates the external multi-mode multi-frequency power amplifier device and the preset first frequency band duplexer into the radio frequency front-end device, so that the radio frequency front-end device can support a non-independent networking mode without the external multi-mode multi-frequency power amplifier device and the preset first frequency band duplexer, and after integration, the wiring of power supply, transmission control and the like is reduced, the complexity of single-board layout is reduced, and the performance of the radio frequency transceiving system and the communication equipment is improved. Compared with the second radio frequency front-end device, an input port of the switching circuit is directly connected with the LNA of the receiving circuit in the radio frequency front-end device through the internal routing of the device, an additional auxiliary receiving port is not needed, and the complexity of external layout routing of the radio frequency front-end device is further reduced.

Fig. 17 is a schematic structural diagram of a first embodiment of a third rf front-end device in an embodiment of the present application, configured to be used for a diversity antenna and a main-set antenna rf link, where the third rf front-end device is at least provided with an intermediate frequency transmitting port MB RFIN, at least one intermediate and high frequency receiving port LNA OUT MHB, and an intermediate frequency auxiliary transceiving port MB INOUT; the third radio frequency front end device comprises at least:

the first transmitting circuit 110 is connected to the intermediate frequency transmitting port MB RFIN and the switching circuit 160, and configured to perform power amplification processing on the first intermediate frequency band signal from the intermediate frequency transmitting port MB RFIN and output the signal to the switching circuit 160;

a switching circuit 160, connected to the first transmitting circuit 110, the first receiving circuit 120, and the intermediate frequency auxiliary transceiving port MB INOUT, for outputting the first intermediate frequency signal from the first transmitting circuit 110 from the intermediate frequency auxiliary transceiving port MB INOUT, outputting the first intermediate frequency signal received through the intermediate frequency auxiliary transceiving port MB INOUT to the first receiving circuit 120, and separating transceiving paths according to a transceiving signal direction of the first intermediate frequency signal to implement single-antenna bidirectional communication;

the first receiving circuit 120 is connected to the middle-high frequency receiving port LNA OUT MHB and the switching circuit 160, and is configured to amplify the first middle-frequency band signal from the switching circuit 160 and output the amplified signal to the middle-high frequency receiving port LNA OUT MHB;

In an exemplary embodiment, the switching circuit 160 may be a first intermediate band duplexer, which is a three-port rf device, for separating the transceiving paths according to the transceiving signal direction of the first intermediate band signal, i.e. dividing the transceiving signal of the antenna into two different signal paths according to the direction thereof, so as to implement single-antenna two-way communication.

In an exemplary example, the common port of the first middle band duplexer is preset to be connected to the middle frequency auxiliary transceiving port MB INOUT, for transmitting or receiving the first middle band signal through an antenna connected to the middle frequency auxiliary transceiving port MB INOUT; one of the output ports of the preset first intermediate band duplexer is connected to the output terminal of the first transmitting circuit 110, and is configured to output a first intermediate band signal; the other output port of the preset first intermediate band duplexer is connected to the first receiving circuit 120, and is configured to output the first intermediate band signal received through the common port of the preset first intermediate band duplexer. Through presetting the first intermediate frequency band duplexer, the filtering and the isolation of the transmitting signal of the preset first intermediate frequency band and the receiving signal of the preset first intermediate frequency band are realized.

IN an exemplary example, the third rf front-end device is further provided with a medium-high frequency antenna port MHB ANT, at least four medium-high frequency receiving ports LNA OUT MHB, at least two auxiliary receiving ports LNA AUX IN; the rf front-end device shown in fig. 17 further includes:

the first receiving circuit 120 is further connected to the medium-high frequency receiving port LNA OUT MHB and the auxiliary receiving port LNA AUX IN, and is further configured to amplify a diversity signal of a first intermediate-frequency signal from the auxiliary receiving port LNA AUX IN and output the amplified diversity signal to the medium-high frequency receiving port LNA OUT MHB, amplify a diversity MIMO signal of a second intermediate-frequency signal from the auxiliary receiving port LNA AUX IN and output the amplified diversity MIMO signal to the medium-high frequency receiving port LNA OUT MHB, and amplify a diversity signal of at least a second intermediate-frequency signal from among a plurality of medium-high frequency signals received from the receiving path and output the amplified diversity signal to the medium-high frequency receiving port LNA OUT MHB;

The third rf front-end device according to the embodiment shown in fig. 17 of the present application supports receiving and transmitting of multiple if signals in different frequency bands and supports a non-independent networking mode. The plurality of mid-band signals may comprise mid-band signals of different frequency bands in a 4G signal, a 5G NR signal or a 6G signal. Illustratively, the frequency bands of the plurality of intermediate frequency band signals include at least B1, B25, B34, B66, B39 and N3 frequency bands, as well as a preset first intermediate frequency band and a preset second intermediate frequency band. In one embodiment, the preset first intermediate frequency range may include, but is not limited to, one of the following: b3, B1, etc., and accordingly, the predetermined second intermediate frequency band may include, but is not limited to, one of the following: n1, N3, etc. In one embodiment, the preset first intermediate frequency range may include, but is not limited to, one of the following: n1, N3, etc., and accordingly, the predetermined second intermediate frequency band may include, but is not limited to, one of the following: b3, B1, etc. In an embodiment, the preset first middle band in the embodiment of the present application may be a B3 band, and accordingly, the preset second middle band may be replaced with a second high band, i.e., a high band signal such as an N41 band.

In order to avoid redundant description, only different parts of the third rf front-end device and the first rf front-end device will be described below, and the same parts will not be described again.

The rf front-end device shown IN fig. 17 may be understood as a package structure, and as shown IN fig. 17, IN one embodiment, the rf front-end device is provided with at least an if transmitting port MB RFIN and at least four if receiving ports LNA OUT MHB for connecting to an rf transceiver, an if antenna port MHB ANT for connecting to an antenna, and an if auxiliary transmitting/receiving port MB INOUT, an if auxiliary receiving port MB RX and at least two auxiliary receiving ports LNA AUX IN for connecting to an external device. The medium-high frequency receiving port LNA OUT MHB, the medium-frequency transmitting port MB RFIN, the medium-high frequency antenna port MHB ANT, the medium-frequency auxiliary receiving and transmitting port MB INOUT, the medium-frequency auxiliary receiving port MB RX, and the auxiliary receiving port LNA AUX IN may be understood as radio frequency pin terminals of a radio frequency front-end device, and are used for being connected with each external device. In one embodiment, the medium-high frequency receiving port LNA OUT MHB, the medium-frequency transmitting port MB RFIN may be used for connection with a radio frequency transceiver; the medium-high frequency antenna port MHB ANT may be for connection to an antenna and may receive a plurality of radio frequency signals including diversity signals of the second medium frequency band signal; the intermediate frequency auxiliary receiving and transmitting port MB INOUT is connected with an external device to realize the transmission and the reception of a first intermediate frequency band signal; the two auxiliary receiving ports LNA AUX IN are connected to respective external circuits, respectively, to achieve reception of diversity signals of the first intermediate frequency band signal and reception of diversity MIMO signals of the second intermediate frequency band signal.

In an illustrative example, as shown in fig. 17, the third radio frequency front end device may include: a first transmitting circuit 110, a switching circuit 160, a first receiving circuit 140, and a first switching circuit 130.

In an exemplary example, as shown in fig. 17, an input terminal of the first transmitting circuit 110 is connected to the intermediate frequency transmitting port MB RFIN, and amplifies the first intermediate frequency band signal received by the intermediate frequency transmitting port MB RFIN; the output end of the first transmitting circuit 110 is connected to an output port of the switching circuit 160, the common port of the switching circuit 160 is connected to the intermediate frequency auxiliary transceiving port MB INOUT, and the amplified first intermediate frequency signal is output from the intermediate frequency auxiliary transceiving port MB INOUT via the switching circuit 160. The first transmit circuitry 110 may be provided with a transmit path to support transmission of the first mid-band signal. Illustratively, the frequency band corresponding to the first intermediate frequency band signal may include, for example, a B3 or B1 frequency band, and may also include, for example, an N1 or N3 frequency band. In one embodiment, the first transmit path may include: the first intermediate frequency transmitting port MB RFIN1, the first transmitting circuit 110, the switching circuit 160, the intermediate frequency auxiliary transceiving port MB INOUT and the antenna form a transmitting path together.

IN an exemplary example, as shown IN fig. 17, the first receiving circuit 120 is connected to the first switch circuit 130, the switching circuit 160, the medium-high frequency receiving port LNA OUT MHB, and the auxiliary receiving port LNA AUX IN, respectively. The output terminal of the first receiving circuit 120 is connected to the medium-high frequency receiving port LNA OUT MHB. In one embodiment, the input of the first receiving circuit 120 includes: a plurality of input ports connected IN one-to-one correspondence with a plurality of second terminals of the first switch circuit 130, an input port connected to an output port of the switching circuit 160, and at least two auxiliary receive ports LNA AUX IN. The first receiving circuit 120 amplifies the rf signal including the diversity signal of the second if signal from the plurality of input ports, the first if signal from one input port connected to the switching circuit 160, the diversity signal of the first if signal from the different auxiliary receiving ports LNA AUX IN, and the diversity MIMO signal of the second if signal, respectively, and outputs the signals to the different intermediate and high frequency receiving ports LNA OUT MHB.

The first receiving circuit 120 in this embodiment supports reception control of any of the aforementioned intermediate frequency band signals. IN one embodiment, the auxiliary receive port LNA AUX IN may be used to receive at least mid-band signals of the B3/B1 and N1/N3 bands. In one embodiment, the first receiving circuit 120 may be provided with a plurality of receiving paths to support the reception of a plurality of mid and high frequency band signals. In one embodiment, the receive path may include: the receiving path formed by the medium-high frequency antenna port MHB ANT, the first switch circuit 130, the first receiving circuit 120 and any medium-high frequency receiving port LNA OUT MHB, the receiving path formed by the medium-frequency auxiliary transceiving port MB INOUT, the switch circuit 160, the first receiving circuit 120 and any medium-high frequency receiving port LNA OUT MHB, and the receiving path formed by the auxiliary receiving port LNA AUX IN, the first receiving circuit 120 and any medium-high frequency receiving port LNA OUT MHB.

In an exemplary example, the implementation of the first switch circuit 130 in fig. 17 can refer to the related description in fig. 1, and is not repeated here.

The third rf front-end device shown in fig. 17 of the present application is used for a diversity antenna and a main antenna rf link, and can support a non-independent networking mode without an external multi-mode multi-band power amplifier device and a duplexer, thereby reducing the occupied area of a PCB, improving the integration level of the rf device, reducing the cost, reducing the number of power supply, transmission control and other routing wires after integration, and reducing the complexity of the layout of a single board, thereby improving the performance of the rf transceiver system and the communication equipment.

Fig. 18 is a schematic structural diagram of a second embodiment of a third rf front-end device in this embodiment, and specific implementation can be described with reference to fig. 2, which is not described herein again.

Fig. 19 is a schematic structural diagram of a third embodiment of a third rf front-end device in this embodiment, and specific implementation may be described with reference to fig. 3, which is not described herein again, and unlike the embodiment shown in fig. 3, a coupling circuit 180 in the embodiment shown in fig. 19 is disposed in an rf path between a switching circuit 160 and an intermediate frequency auxiliary transceiving port MB INOUT.

The third rf front-end device provided in the embodiments of the present application is an LFEM device. The LFEM device can support the receiving of intermediate frequency signals, high frequency signals and low frequency signals of a plurality of different frequency bands, the transmitting and receiving of a preset first intermediate frequency band signal, the receiving switching control among the intermediate frequency signals is realized, the receiving switching control among the high frequency signals is realized, the receiving switching control among the low frequency signals is realized, and a non-independent networking mode is supported. The plurality of middle and high frequency signals may include middle and high frequency signals of different frequency bands in the 4G signal and the 5GNR signal. Specifically, the frequency bands of the plurality of intermediate frequency signals and the frequency bands of the plurality of high frequency signals may include frequency bands of B1, B4, B3, B25, B34, B66, B39, B41, B7, B40, B70, B32, B35, B75, B76, N1, N3, and the like. The plurality of low frequency band signals may include frequency bands of B28, B20, B8, B26, etc.

Fig. 20 is a schematic structural diagram of a third rf LFEM device IN an embodiment of the present invention, and as shown IN fig. 20, the LFEM device is provided with an intermediate frequency transmitting port MB RFIN for connecting with an rf transceiver, at least four intermediate and high frequency receiving ports LNA OUT MHB, an intermediate frequency auxiliary transmitting/receiving port MB INOUT for connecting with an external device, an intermediate and high frequency antenna port MHB ANT for connecting with an antenna, and at least two auxiliary receiving ports LNA AUX IN. The middle-high frequency receiving port LNA OUT MHB, the middle-high frequency transmitting port MB RFIN, the middle-high frequency auxiliary receiving port MB INOUT, the middle-high frequency antenna port MHB ANT and the auxiliary receiving port LNA AUX IN can be understood as radio frequency pin terminals of the LFEM device and are used for being connected with external devices. In one embodiment, the medium-high frequency receiving port LNA OUT MHB, the medium-frequency transmitting port MB RFIN may be used for connection with a radio frequency transceiver; the medium-high frequency antenna port MHB ANT may be configured to connect to an antenna, and may transmit a plurality of radio frequency signals including a diversity signal of the second medium frequency band signal received by the antenna to a third LFEM device; the intermediate frequency auxiliary receiving and transmitting port MB INOUT is connected with an external device so as to realize the transmission and the reception of a first intermediate frequency signal; the auxiliary receiving port LNA AUX IN is connected to other external devices, and transmits diversity signals of the first intermediate frequency band signal and diversity MIMO signals of the second intermediate frequency band signal from other external devices to the LFEM device.

In an illustrative example, as shown in fig. 20, the first transmission circuit 110 may include at least: the first if power amplifier 111 has an input end connected to the if transmit port MB RFIN, an output end of the first if power amplifier 111 is connected to an output port (e.g. B3 TX1 in the embodiment shown in fig. 20) of the first if duplexer 151, and a common port of the first if duplexer 151 is connected to the if auxiliary transmit/receive port MB INOUT, and configured to perform power amplification processing on the first if signal received through the if transmit port MB RFIN, and output the first if signal from the if auxiliary transmit/receive port MB INOUT through the first if duplexer 151. In one embodiment, the first mid-band signal comprises a B3 or B1 band signal. In one embodiment, the first transmit path may include: the intermediate frequency transmitting port MB RFIN, the first intermediate frequency power amplifier 111, the first intermediate frequency duplexer 151, the intermediate frequency auxiliary transceiving port MB INOUT and the antenna jointly form a transmitting path.

The third LFEM shown in fig. 20 differs from the second LFEM shown in fig. 12 in that: in this embodiment, the first intermediate frequency signal is received through the intermediate frequency auxiliary transceiver port MB INOUT, and the first intermediate frequency signal is sent to the first receiving circuit 120 through the switching circuit 160.

In an illustrative example, as shown in fig. 20, the first receiving circuit 120 may include: at least four low noise amplifiers 121, at least four second switching units 122, a third switching unit 123; wherein the content of the first and second substances,

an input end of a low noise amplifier 121 (e.g., the low noise amplifier LNA4 in the embodiment shown in fig. 20) is connected to a first port of a second switching unit 122 (e.g., the second switching unit SPDT in the embodiment shown in fig. 20), a second port of the second switching unit SPDT is connected to the first switching circuit 130, an output end of the low noise amplifier LNA4 is connected to a second port of the third switching unit 123, and the low noise amplifier LNA4 is configured to amplify the diversity signal of the second if signal and output the amplified diversity signal to a if receiving port LNA OUT MHB (e.g., the if receiving port LNA OUT MHB2 in the embodiment shown in fig. 20);

an input terminal of a low noise amplifier 121 (e.g., the low noise amplifier LNA8 in the embodiment shown in fig. 20) is connected to a first port of a second switching unit 122 (e.g., the second switching unit SP3T #7 in the embodiment shown in fig. 20), a second port of the second switching unit SP3T #7 is connected to an output port (e.g., B3 RX1 in the embodiment shown in fig. 20) of the first mid-band duplexer 151, and an output terminal of the low noise amplifier LNA8 is connected to a further second port of the third switching unit 123, and is configured to amplify the first mid-band signal and output the amplified signal to a further medium-high frequency receiving port LNA OUT MHB (e.g., the medium-high frequency receiving port LNA OUT MHB6 in the embodiment shown in fig. 13) through the third switching unit 123;

an input terminal of a low noise amplifier 121 (e.g., the low noise amplifier LNA6 IN the embodiment shown IN fig. 20) is connected to a first port of a second switch unit 122 (e.g., the second switch unit SP3T #5 IN the embodiment shown IN fig. 20), a second port of the second switch unit SP3T #5 is connected to an auxiliary receiving port LNA AUX IN1 (e.g., the auxiliary receiving port LNA AUX LMB IN the embodiment shown IN fig. 20), and an output terminal of the low noise amplifier LNA6 is connected to another second terminal of the third switch unit 123, so as to amplify the diversity MIMO signal of the received second intermediate frequency band signal and output the amplified diversity MIMO signal to another intermediate and high frequency receiving port LNA OUT MHB (e.g., the intermediate and high frequency receiving port LNA OUT MHB4 IN the embodiment shown IN fig. 20);

an input terminal of a low noise amplifier 121 (e.g., the low noise amplifier LNA3 IN the embodiment shown IN fig. 20) is connected to a first port of a second switching unit 122 (e.g., the second switching unit SP3T #3 IN the embodiment shown IN fig. 20), a second port of the second switching unit SP3T #3 is connected to an auxiliary receiving port LNA AUX IN5 (e.g., the auxiliary receiving port LNA AUX HB4 IN the embodiment shown IN fig. 20), and an output terminal of the low noise amplifier LNA3 is connected to a second port of the third switching unit 123, so as to amplify the diversity signal of the first intermediate frequency signal and output the amplified diversity signal to a high frequency receiving port LNA OUT MHB (e.g., the high frequency receiving port LNA OUT MHB1 IN the embodiment shown IN fig. 20) through the third switching unit 123.

In the embodiment of the present application, the first transmitting circuit 110 and the switching circuit 160 are integrated in the third LFEM device, and no external multi-mode multi-frequency power amplifier device or duplexer is required, so that the occupied area of the PCB is reduced, the integration level of the radio frequency device is improved, the cost is reduced, and after the integration, the number of power supply, transmission control and other routing lines is reduced, the complexity of the layout of the single board is reduced, and thus the performance of the radio frequency transceiving system and the communication device is improved.

Based on the trend of miniaturization of the motherboard of the terminal device, the embodiment of the present application provides a third LFEM device, whose composition is shown in fig. 20. The whole chip integrates a multi-band receiving channel, a preset first middle-band transmitting channel and a receiving forwarding channel, and comprises frequency bands such as B1, B3, B34, B39, B40, B41, N1 and N3; and a plurality of intermediate frequency auxiliary receiving ports, a plurality of low frequency auxiliary receiving and transmitting ports and a plurality of low frequency auxiliary receiving ports for external frequency band extension.

Based on the third LFEM device as shown in fig. 20, a non-independent networking mode may be supported. For example, to implement dual connection of 4G and 5G, the first intermediate frequency band may be, for example, a B3 frequency band, and the second intermediate frequency band may be, for example, an EN-DC combination of B3+ N1 of an N1 frequency band.

The transmission path of the B3 frequency band is as follows:

The receiving path of the B3 frequency band is as follows:

antenna → middle frequency auxiliary transceiver port MB INOUT → first middle band duplexer 161 → a second switch unit 122 (e.g. SP3T #7) → low noise amplifier LNA8 → contact 6 of third switch unit 123 → high frequency receiver port LNA OUT MHB6 in the receiver port → radio frequency transceiver.

The diversity reception path of the N1 band is as follows:

The diversity MIMO receive path for the N1 band is as follows:

The diversity reception path of the B3 band is as follows:

The third LFEM device provided by the embodiment of the application can support a non-independent networking mode without an external multi-mode multi-frequency power amplifier device and a duplexer, reduces the occupied area of a PCB (printed circuit board), improves the integration level of a radio frequency device, reduces the cost, reduces the wiring of power supply, transmission control and the like and reduces the complexity of single board layout after integration, thereby improving the performance of a radio frequency transceiving system and communication equipment.

In order to meet the requirement of the 5G MB MIMO function, an embodiment of the present application further provides a radio frequency transceiving system, and the radio frequency transceiving system is implemented by the third LFEM device and the radio frequency MHB L-PA Mid device provided in the embodiment of the present application. The radio frequency MHB L-PA Mid device in the embodiment of the present application at least includes: the first antenna port ANT1, an auxiliary receive port LNA IN, and corresponding transmit circuitry, receive circuitry, and switching circuitry, are used to at least support transmit and receive processing of a plurality of intermediate frequency signals. It should be noted that the specific implementation of the radio frequency MHB L-PA Mid device is not used to limit the scope of the present application.

Fig. 21 is a schematic structural diagram of a first embodiment of a third rf transceiving system in the embodiment of the present application, and as shown in fig. 21, the third rf transceiving system at least includes: a first antenna ANT1, a second antenna ANT2, a third antenna ANT3, a fourth antenna ANT4, a radio frequency transceiver 40, a third radio frequency front end device (such as LFEM device 60) and a radio frequency MHB L-PA Mid device 50 in any of the foregoing embodiments of fig. 17-20, a second combiner 82, a fourth combiner 84, a first filter 71, a second filter 72, and a third filter 73; wherein the content of the first and second substances,

the radio frequency transceiver 40 is connected with the second antenna ANT2 through the third radio frequency front end device 60, the radio frequency MHB PA Mid device 50, the first filter 71 and the second combiner 82 to form a transmitting channel of the first intermediate frequency band signal, a main set receiving channel of the first intermediate frequency band signal, and a main set MIMO receiving channel of the second intermediate frequency band signal;

the radio frequency transceiver 40 is connected to a third antenna ANT3 through a third radio frequency front end device 60 to form a diversity reception channel of a medium and high frequency band signal including at least a second medium frequency band signal;

the radio frequency transceiver 40 is connected to a fourth antenna ANT4 through a third radio frequency front end device 60, a second filter 72, a third filter 73 and a fourth combiner 84, so as to form a diversity receiving channel for the first intermediate frequency band signal and a diversity MIMO receiving channel for the second intermediate frequency band signal;

In one embodiment, as shown in fig. 21, the first antenna ANT1 may be used for transmission of the second Mid-band signal and reception of the main set of the second Mid-band signal, and the first antenna ANT1 is connected to the first antenna port ANT1 of the radio frequency MHB L-PA Mid device 50. The second antenna ANT2 may be configured to transmit a first intermediate frequency signal, receive a main set of first intermediate frequency signals, and receive a main set MIMO of second intermediate frequency signals, the second antenna ANT2 is connected to the second end of the second combiner 82, a first port of the second combiner 82 is connected to an auxiliary receiving port LNA IN5 of the radio frequency MHB L-PA Mid device 50 through the first filter 71, and is configured to receive the main set MIMO of second intermediate frequency signals, and another first port of the second combiner 82 is connected to an intermediate frequency auxiliary receiving/transmitting port MB INOUT of the LFEM device 60, and is configured to transmit the first intermediate frequency signal and receive the main set of first intermediate frequency signals. The third antenna ANT3 may be used to implement diversity reception of the second mid-band signal, and the third antenna ANT3 is connected to a mid-high frequency antenna port MHB ANT of the LFEM device 60. The fourth antenna ANT4 may be configured to implement diversity reception of a first intermediate frequency signal and diversity MIMO reception of a second intermediate frequency signal, the fourth antenna ANT4 is connected to the second end of the fourth combiner 84, a first port of the fourth combiner 84 is connected to an auxiliary receiving port LNA AUX IN1 of the LFEM device 60 through the second filter 72, and is configured to implement diversity reception of the second intermediate frequency signal, and another first port of the fourth combiner 84 is connected to another auxiliary receiving port LNA AUX IN5 of the LFEM device 60 through the third filter 73, and is configured to implement diversity reception of the first intermediate frequency signal. It should be noted that the port in the embodiment is only an example, and is not used to limit the protection scope of the present application.

In the third radio frequency transceiving system provided by the embodiment of the application, on one hand, because the third radio frequency front-end device is integrated with the multi-mode multi-frequency power amplifier and the duplexer, a non-independent networking mode can be supported without externally hanging the multi-mode multi-frequency power amplifier device and the duplexer, and the occupied area of a PCB is reduced; on the other hand, the integration level of the radio frequency device is improved, so that the cost is reduced; moreover, through integration, wiring such as power supply, transmission control and the like is reduced, and the complexity of single-board layout is reduced, so that the performance of the radio frequency transceiving system is improved.

In an exemplary embodiment, the present application further provides a radio frequency transceiving system. As shown in fig. 21 and 22, the third rf transceiving system may include an antenna group, a radio frequency MHB L-PA Mid device 50, a radio frequency transceiver 40, a LFEM device 60, a plurality of filters, a plurality of switch modules, and a plurality of combiners.

Fig. 22 is a schematic structural diagram of a second embodiment of a third rf transceiver system in an embodiment of the present application, where the third rf transceiver system shown in fig. 22 further includes an rf front-end device for supporting transceiving processing of a plurality of low-frequency-band rf signals, and as shown in fig. 22, the rf front-end device may be an rf LB PA Mid device. It should be noted that, the specific implementation of the radio frequency LB PA Mid device in the embodiment of the present application is not used to limit the protection scope of the present application.

Based on the rf transceiver system shown in fig. 22 and with reference to fig. 20 and 21, the operating principle of B3+ N1EN-DC is analyzed as follows by taking the first preset intermediate frequency band as the B3 frequency band and the second preset intermediate frequency band as the N1 frequency band.

B3 TX link: a transmission signal (B3 TX1) of the first intermediate frequency band signal is output from the TX1 MB port of the rf transceiver 40 to the intermediate frequency transmission port MB RFIN port (denoted as 4G MB RFIN in fig. 22) of the LFEM device 60 through the rf line; after the signal is amplified by the first intermediate frequency power amplifier 111 (shown as MB 4G PA in fig. 22), the amplified signal is sent to the switching circuit 160, that is, the B3 Duplexer duplex 1 in fig. 22, filtered by the B3 TX Filter, and then sent to the intermediate frequency auxiliary transceiving port MB INOUT port for output, and then sent to the second combiner 82 through the Path 05; after being combined by the second combiner 82, the B3 TX1 transmits from the second antenna ANT2 via Path 03.

B3 PRX link: a receiving signal (B3 RX1) of the first intermediate frequency band signal enters from the second antenna ANT2, passes through a Path03, and reaches the second combiner 82; after being combined by the second combiner 82, the combined signal is transmitted to the intermediate frequency auxiliary transceiving port MB INOUT of the LFEM device 60 through Path05, and is filtered by the B3 RX Filter of the B3 Duplexer duplex 1, and then is transmitted to a second switch unit 122 (for example, the SP3T #7 switch in fig. 22); the SP3T #7 switch switches the single port to a low noise amplifier 121 (e.g., LNA8 in fig. 22) path of the LFEM device 60, which is amplified by a low noise amplifier LNA8, and then to a third switching unit 123, which is switched as 6P6T in fig. 22; 6P6T to contact 6, output from receive port LNA OUT 6; b3 RX1 enters the rf transceiver 40 via the SDR PRX3 port.

B3 DRX link: a diversity received signal (B3 DRX) of the first mid-band signal enters from the fourth antenna ANT4, passes through a Path08, and reaches the fourth combiner 84; the fourth combiner 84 is combined and then passes through Path10 to the third filter 73; the B3 DRX is filtered by the third filter 73 and then goes to an auxiliary receiving port LNA AUX IN (shown as LNA AUX HB4 IN fig. 22) of the LFEM device 60; a second switch unit 122 (e.g., SP3T #3 switch in fig. 22) of the LFEM device 60 switches the single port to a low noise amplifier 121 (e.g., LNA3 in fig. 22) path of the LFEM device 60; amplified by the low noise amplifier LNA3, and then sent to the third switching unit 123 of the LFEM device 60 (e.g., 6P6T switch in fig. 22); the 6P6T switch is switched to the contact 1 and is output from the middle high frequency receiving port LNA OUT MHB1 port; the B3 DRX enters the radio frequency transceiver 40 via the SDR DRX0 port.

N1 TX link: the transmission signal (N1 TX) of the second intermediate frequency band signal is output from the TX0 MB port of the radio frequency transceiver 40, via the radio frequency line, to the second intermediate frequency transmission port MB RFIN2 port (denoted as 4G MB RFIN2 in fig. 22) of the radio frequency MHB L-PA Mid device 50; after the signal is amplified by an intermediate frequency power amplifier (indicated as MB 4G PA in fig. 22) inside the radio frequency MHB L-PA Mid device 50, the amplified signal is switched to a switching unit such as 3P5T in fig. 22; the 3P5T switch is switched to the contact 4, filtered by the N1 TX Filter, and then switched to another switch unit (such as the DP7T switch in fig. 22); the DP7T switch is switched to contact 1 and output from the first antenna port ANT 1; via Path02 to the first combiner 81; after being combined by the first combiner 81, the N1 TX is transmitted from the first antenna ANT1 through a Path of Path 01.

N1 PRX link: a receiving signal (N1 PRX) of the second intermediate frequency signal enters from the first antenna ANT1, passes through a Path01, and reaches the first combiner 81; after being combined by the first combiner 81, the combined signal passes through a Path02 to a first antenna port ANT1 of the MHB L-PA Mid device 50; a switching unit (such as the DP7T switch in fig. 22) inside the MHB L-PA Mid device 50 switches to the contact 4, and after being filtered by the N1 RX, to a switching unit (such as the SP3T #1 switch shown in fig. 22) of a receiving circuit inside the MHB PA Mid device 50; the SP3T #1 switch switches the single port to a low noise amplifier (e.g., LNA1 within the rf MHB L-PA Mid device 50 in fig. 22) path; amplified by a low noise amplifier LNA1, and then sent to another switch unit (such as a 6P6T switch in FIG. 22); the 6P6T switch is switched to contact 1 to a receiving port LNA OUT (such as LNA OUT1 in fig. 22) output of the radio frequency MHB L-PA Mid device 50; n1 PRX enters rf transceiver 40 through SDR PRX0 port.

N1 DRX link: a diversity reception signal (N1 DRX) of the second intermediate frequency band signal enters from a third antenna ANT3, passes through a Path06, and reaches a third combiner 83; after being combined by the third combiner 83, the combined signal is transmitted to a medium-high frequency antenna port MHB ANT of the LFEM device 60 through a Path 07; the SP8T switch inside LFEM device 60 switches to contact 5, after N1 RX filtering, to the first switching unit 131 of LFEM device 60 as the SPDT switch in fig. 22; the SPDT switch switches the single port to a low noise amplifier 121 (e.g., low noise amplifier LNA4 in fig. 22); after being amplified by a low noise amplifier LNA4, the low noise amplifier is switched on and off by a low noise amplifier 6P6T in the LFEM device 60; the 6P6T switch is switched to the contact 2, and the output is output from the medium-high frequency receiving port LNA OUT MHB 2; the N1 DRX enters the radio frequency transceiver device 40 via the SDR DRX2 port.

N1 PRX MIMO link: a main set MIMO receiving signal (N1 PRX MIMO) of the second intermediate frequency band signal enters from the second antenna ANT2, passes through a Path03, and reaches the second combiner 82; after being combined by the second combiner 82, the signals are routed to the first filter 71 through a Path 04; the N1 PRX MIMO is filtered by the first filter 71 to an auxiliary receiving port of the MHB L-PA Mid device 50 (shown as LMHB LNA IN1 IN fig. 22); amplified by a low noise amplifier (such as LNA5 shown in fig. 22) inside the MHB L-PA Mid device 50, and then sent to a switch unit (such as 6P6T switch in fig. 22) inside the MHB L-PA Mid device 50; the 6P6T switch switches to contact 5, outputting from a receive port LNA OUT (such as LNA OUT5 in fig. 22); n1 PRX MIMO enters the rf transceiver 40 via the SDR PRX1 port.

N1 DRX MIMO link: a diversity MIMO reception signal (N1 DRX MIMO) of the second intermediate frequency band signal enters from the fourth antenna ANT4, passes through a Path08, and reaches the fourth combiner 84; after being combined by the fourth combiner 84, the combined signal passes through a Path09 to reach the second filter 72; n1 DRX MIMO is filtered by the second filter 72 and then provided to an auxiliary receiving port LNA AUX IN (denoted as LNA AUX LMB IN fig. 22) of the LFEM device 60; LFEM device 60 a second switch unit 122 such as SP3T #5 switch switches the single port to a low noise amplifier 121 such as LNA6 path in fig. 22; amplified by the low noise amplifier LNA6, and then switched to a third switching unit 123 of the LFEM device 60 as shown in fig. 22, i.e., 6P 6T; the 6P6T switch is switched to contact 4 to output from the middle high frequency receiving port LNA OUT MHB4 port; the N1 DRX MIMO enters the rf transceiver 40 via the SDR DRX6 port.

The third radio frequency transceiving system in the example of the application supports a non-independent networking mode, taking a combination of B3+ N1EN-DC as an example, B3 has two-path reception of PRX and DRX, and N1 has four-path reception of PRX, DRX, PRX MIMO and DRX MIMO; in addition, in the embodiment of the application, the externally-hung multi-mode multi-frequency power amplifier device and the duplexer are integrated into the third radio frequency front-end device, so that the occupied area of a PCB is reduced; on the other hand, the integration level of the radio frequency device is improved, so that the cost is reduced; moreover, through integration, wiring such as power supply, transmission control and the like is reduced, and the complexity of single-board layout is reduced, so that the performance of the radio frequency transceiving system is improved. The third rf transceiving system IN the embodiment of the present application implements transmission or transmission and reception of a multiband receiving channel and a preset first intermediate frequency band, where the multiband may include intermediate frequency bands such as B1, B4, B3, B25, B34, B66, B39, B41, B7, B40, B70, B32, B35, B75, B76, N1, and N3, and low frequency bands such as B28, B20, B8, and B26, and 3 auxiliary transceiving ports TRX and 6 auxiliary receiving ports LNA AUX IN for external frequency band extension, thereby expanding the communication frequency band of the rf transceiving system and improving the communication performance of the rf transceiving system.

The embodiment of the application also provides communication equipment, wherein the communication equipment is provided with the third radio frequency transceiving system, and the integration of the plug-in multi-mode multi-frequency power amplifier into a radio frequency front-end device is realized by arranging the third radio frequency transceiving system on the communication equipment, so that a non-independent networking mode is supported, the integration level is improved, and the occupied area of a PCB is reduced; moreover, the cost is reduced due to the improvement of the integration level of the radio frequency device; moreover, through integration, wiring such as power supply, transmission control and the like is reduced, the complexity of single-board layout is reduced, and the performance of communication equipment is improved.

Although the embodiments disclosed in the present application are described above, the descriptions are only for the convenience of understanding the present application, and are not intended to limit the present application. It will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the disclosure as defined by the appended claims.

Claims

1. A radio frequency front-end device is characterized in that the device is used for a diversity antenna radio frequency link and is provided with an intermediate frequency transmitting port and an intermediate frequency auxiliary transmitting port; the radio frequency front end device comprises:

2. The radio frequency front-end device according to claim 1, further provided with a medium-high frequency antenna port, at least three medium-high frequency receiving ports, at least two auxiliary receiving ports; the radio frequency front end device further comprises:

the first switch circuit is provided with a plurality of second ports which are respectively connected with the first receiving circuit, and a first port which is connected with the middle-high frequency antenna port and is used for selectively conducting a receiving path between the middle-high frequency receiving port of the first receiving circuit and the middle-high frequency antenna port;

the first receiving circuit is connected with the medium-high frequency receiving port and the auxiliary receiving port and is used for amplifying diversity signals of a first medium-frequency signal from the auxiliary receiving port and outputting the diversity signals to the medium-high frequency receiving port, amplifying diversity MIMO signals of a second medium-frequency signal from the auxiliary receiving port and outputting the diversity MIMO signals to the medium-high frequency receiving port, and amplifying diversity signals of at least a second medium-frequency signal in a plurality of medium-high frequency signals from a receiving channel and outputting the diversity signals to the medium-high frequency receiving port;

the second intermediate frequency band signal is a signal of another preset intermediate frequency band in the non-independent networking mode;

the radio frequency front end device is a low frequency front end module LFEM device.

3. The radio frequency front-end device according to claim 1, further used for a main set antenna radio frequency link, further provided with a medium-high frequency antenna port, at least four medium-high frequency receiving ports, at least three auxiliary receiving ports; the radio frequency front end device further comprises:

a first receiving circuit, connected to the medium-high frequency receiving port and the auxiliary receiving port, for amplifying a diversity signal of a first intermediate frequency signal from an auxiliary receiving port and outputting the amplified diversity signal to the medium-high frequency receiving port, amplifying a diversity MIMO signal of a second intermediate frequency signal from an auxiliary receiving port and outputting the amplified diversity MIMO signal to the medium-high frequency receiving port, amplifying a first intermediate frequency signal from an auxiliary receiving port connected to the external circuit and outputting the amplified first intermediate frequency signal to the medium-high frequency receiving port, and amplifying a diversity signal of at least a second intermediate frequency signal among a plurality of medium-high frequency signals from the receiving path and outputting the amplified diversity signal to the medium-high frequency receiving port;

4. The radio frequency front end device of claim 2 or 3, wherein the first transmit circuit comprises: a first intermediate frequency power amplifier; the input end of the first intermediate-frequency power amplifier is connected with the intermediate-frequency transmitting port, and the output end of the first intermediate-frequency power amplifier is connected with the intermediate-frequency auxiliary transmitting port.

5. The radio frequency front end device of claim 4, further provided with a coupled output port;

the radio frequency front-end device further comprises a coupling circuit, which is arranged in a radio frequency path between the first intermediate frequency power amplifier and the intermediate frequency auxiliary transmitting port and is used for coupling the first intermediate frequency band signal in the radio frequency path so as to output a coupling signal through a coupling output port.

6. The radio frequency front end device of claim 2, wherein the first receive circuit comprises: at least three low noise amplifiers, at least three second switching units, and a third switching unit; wherein the content of the first and second substances,

the input end of a low-noise amplifier is connected with a first port of a second switch unit, a second port of the second switch unit is connected with the first switch circuit, and the output end of the low-noise amplifier is connected with a second port of a third switch unit and used for amplifying the diversity signal of the second middle-frequency band signal and outputting the amplified diversity signal to a middle-high frequency receiving port through the third switch unit;

the input end of a low-noise amplifier is connected with the first port of a second switch unit, a second port of the second switch unit is connected with an auxiliary receiving port, and the output end of the low-noise amplifier is connected with the second port of a third switch unit and used for amplifying the diversity signal of the first middle-frequency band signal and outputting the amplified diversity signal to a middle-high frequency receiving port through a fourth switch unit;

the input end of a low noise amplifier is connected with the first port of a second switch unit, a second port of the second switch unit is connected with an auxiliary receiving port, and the output end of the low noise amplifier is connected with a second port of a third switch unit and used for amplifying the diversity MIMO signal of the second middle frequency band signal and outputting the amplified diversity MIMO signal to a middle and high frequency receiving port through the third switch unit.

7. The radio frequency front end device of claim 3, wherein the first receive circuit comprises: at least four low noise amplifiers, at least four second switching units, and a third switching unit; wherein the content of the first and second substances,

the input end of a low-noise amplifier is connected with a first port of a second switch unit, a second port of the second switch unit is connected with an auxiliary receiving port, and the output end of the low-noise amplifier is connected with a second port of a third switch unit and used for amplifying the diversity signal of the first middle-frequency-band signal and outputting the amplified diversity signal to a middle-high-frequency receiving port through the fourth switch unit;

the input end of a low-noise amplifier is connected with a first port of a second switch unit, a second port of the second switch unit is connected with an auxiliary receiving port connected with the external circuit, and the output end of the low-noise amplifier is connected with a second port of a third switch unit and used for amplifying the first middle-frequency band signal and outputting the amplified first middle-frequency band signal to a middle-high frequency receiving port through the fourth switch unit;

the input end of a low noise amplifier is connected with a first port of a second switch unit, a second port of the second switch unit is connected with an auxiliary receiving port, and the output end of the low noise amplifier is connected with a second port of a third switch unit, and is used for amplifying the diversity MIMO signal of the second middle-frequency band signal and outputting the amplified diversity MIMO signal to a middle-high frequency receiving port through the third switch unit.

8. The radio frequency front-end device according to claim 2 or 6, wherein the external circuit is a first intermediate band duplexer connected to the intermediate frequency auxiliary receive port;

presetting one output port of a first intermediate frequency band duplexer to be connected with the intermediate frequency auxiliary transmitting port and used for outputting the first intermediate frequency band signal; the other output port of the preset first intermediate frequency band duplexer is connected with an external chip and used for receiving the first intermediate frequency band signal; a public port of a preset first intermediate frequency band duplexer is connected with an antenna and used for receiving or transmitting the first intermediate frequency band signal.

9. The radio frequency front-end device according to claim 3 or 7, wherein the external circuit is a first intermediate band duplexer connected to the intermediate frequency auxiliary transmit port and the auxiliary receive port;

presetting one output port of a first intermediate frequency band duplexer to be connected with the intermediate frequency auxiliary transmitting port and used for outputting the first intermediate frequency band signal; presetting another output port and the auxiliary receiving port of the first intermediate frequency band duplexer, and receiving the first intermediate frequency band signal; a public port of a preset first intermediate frequency band duplexer is connected with an antenna and used for receiving or transmitting the first intermediate frequency band signal.

10. A radio frequency transceiver system, comprising: a first antenna, a second antenna, a third antenna, a fourth antenna, a radio frequency transceiver, an external circuit, a second combiner, a fourth combiner, a first filter, a second filter and a third filter, a radio frequency MHB PA Mid device, and a first radio frequency front end device of any one of claims 1-9; wherein the content of the first and second substances,

11. The radio frequency transceiving system of claim 10, wherein said first antenna is connected to a first antenna port of said radio frequency MHB PA Mid device;

the second antenna is connected with the second end of the second combiner, and a first port of the second combiner is connected with an auxiliary receiving port of the radio frequency MHB PA Mid device through the first filter; the other first port of the second combiner is connected with a common port of the external circuit, and one output port of the external circuit is connected with an intermediate frequency auxiliary transmitting port of the first radio frequency front-end device; the other output port of the external circuit is connected with an auxiliary receiving port of the radio frequency MHB PA Mid device;

the third antenna is connected with a medium-high frequency antenna port of the first radio frequency front-end device;

the fourth antenna is connected with the second end of the fourth combiner, a first port of the fourth combiner is connected with an auxiliary medium-high frequency receiving port of the first radio frequency front-end device through the second filter, and another first port of the fourth combiner is connected with another auxiliary medium-high frequency receiving port of the first radio frequency front-end device through the third filter.

12. The radio frequency transceiving system of claim 10, wherein said first antenna is connected to a first antenna port of said radio frequency MHB PA Mid device;

the second antenna is connected with the second end of the second combiner, and a first port of the second combiner is connected with an auxiliary receiving port of the radio frequency MHB PA Mid device through the first filter; the other first port of the second combiner is connected with a common port of the external circuit, and one output port of the external circuit is connected with an intermediate frequency auxiliary transmitting port of the first radio frequency front-end device; the other output port of the external circuit is connected with an auxiliary receiving port of the first radio frequency front-end device;

13. The radio frequency transceiver system of claim 11, wherein the external circuit is a predetermined first intermediate band duplexer connected to the intermediate frequency auxiliary receiving port;

14. The rf front-end device according to claim 12, wherein the external circuit is a first intermediate band duplexer connected to the intermediate frequency auxiliary transmit port and the auxiliary receive port;

15. A communication device comprising the radio frequency transceiver system of any one of claims 10 to 14.

16. A radio frequency front-end device is characterized in that the device is used for a diversity antenna radio frequency link and is provided with an intermediate frequency transmitting port, an intermediate frequency auxiliary receiving and transmitting port and an intermediate frequency auxiliary receiving port; the radio frequency front end device comprises:

17. The radio frequency front end device according to claim 16, further provided with a medium-high frequency antenna port, at least three medium-high frequency receiving ports, at least two auxiliary receiving ports; the radio frequency front end device further comprises:

18. The rf front-end device according to claim 16, further configured for a main set antenna rf link, further provided with a medium-high frequency antenna port, at least four medium-high frequency receive ports, at least three auxiliary receive ports; the radio frequency front end device further comprises:

a first receiving circuit, connected to the medium-high frequency receiving port and the auxiliary receiving port, for amplifying a diversity signal of a first intermediate frequency signal from an auxiliary receiving port and outputting the amplified diversity signal to a medium-high frequency receiving port, amplifying a diversity MIMO signal of a second intermediate frequency signal from an auxiliary receiving port and outputting the amplified diversity MIMO signal to a medium-high frequency receiving port, amplifying a first intermediate frequency signal from an auxiliary receiving port connected to the medium-high frequency auxiliary receiving port and outputting the amplified diversity signal to a medium-high frequency receiving port, and amplifying a diversity signal of at least a second intermediate frequency signal among a plurality of medium-high frequency signals from a receiving path and outputting the amplified diversity signal to a medium-high frequency receiving port;

19. The radio frequency front end device of claim 17 or 18, wherein the first transmit circuit comprises: a first intermediate frequency power amplifier; the input end of the first intermediate-frequency power amplifier is connected with the intermediate-frequency transmitting port, and the output end of the first intermediate-frequency power amplifier is connected with an output port of the switching circuit.

20. The rf front-end device according to claim 17 or 18, wherein the switching circuit is a preset first intermediate band duplexer, wherein the preset first intermediate band is a band in which the first intermediate band signal is located;

a common port of the first intermediate-frequency duplexer is connected with the intermediate-frequency auxiliary transceiving port and is used for transmitting or receiving the first intermediate-frequency signal through an antenna connected with the intermediate-frequency auxiliary transceiving port;

one output port of the first intermediate-frequency band duplexer is connected with the output end of the first transmitting circuit and used for outputting the first intermediate-frequency band signal;

and the other output port of the first intermediate-frequency band duplexer is connected with the intermediate-frequency auxiliary receiving port and used for outputting the first intermediate-frequency band signal received by the public port of the first intermediate-frequency band duplexer.

21. The radio frequency front end device of claim 20, wherein the preset first mid-band comprises one of: b3, B1 frequency bands;

the preset first middle band duplexer comprises one of the following components: b3 duplexer, B1 duplexer;

the preset second intermediate frequency band comprises one of the following: n1, N3 frequency bands.

22. The radio frequency front end device of claim 17 or 18, further provided with a coupling output port;

the radio frequency front-end device further comprises a coupling circuit, which is arranged in a radio frequency path between the switching circuit and the intermediate frequency auxiliary transmitting port and is used for coupling the first intermediate frequency band signal in the radio frequency path so as to output a coupling signal through a coupling output port.

23. The radio frequency front end device of claim 17, wherein the first receive circuit comprises: at least three low noise amplifiers, at least three second switching units, and a third switching unit; wherein the content of the first and second substances,

24. The radio frequency front end device of claim 18, wherein the first receive circuit comprises: at least four low noise amplifiers, at least four second switching units, and a third switching unit; wherein the content of the first and second substances,

the input end of a low-noise amplifier is connected with a first port of a second switch unit, a second port of the second switch unit is connected with an auxiliary receiving port connected with the intermediate-frequency auxiliary receiving port, and the output end of the low-noise amplifier is connected with a second port of a third switch unit and used for amplifying the first intermediate-frequency signal and outputting the amplified first intermediate-frequency signal to the intermediate-frequency and high-frequency receiving ports through a fourth switch unit;

25. A radio frequency transceiver system, comprising: a first antenna, a second antenna, a third antenna, a fourth antenna, a radio frequency transceiver, a second combiner, a fourth combiner, a first filter, a second filter, a third filter, a radio frequency MHB PA Mid device, and a second radio frequency front end device of any of claims 16-24; wherein the content of the first and second substances,

26. The radio frequency transceiving system of claim 25, wherein said first antenna is connected to a first antenna port of said radio frequency MHB PA Mid device;

the second antenna is connected with the second end of the second combiner, and a first port of the second combiner is connected with an auxiliary receiving port of the radio frequency MHB PA Mid device through the first filter; another first port of the second combiner is connected with an intermediate frequency auxiliary receiving and transmitting port of the second radio frequency front-end device, and an intermediate frequency auxiliary receiving port of the second radio frequency front-end device is connected with another auxiliary receiving port of the radio frequency MHB PA Mid device;

the third antenna is connected with a medium-high frequency antenna port of the second radio frequency front-end device;

the fourth antenna is connected with the second end of the fourth combiner, a first port of the fourth combiner is connected with an auxiliary medium-high frequency receiving port of the second radio-frequency front-end device through the second filter, and another first port of the fourth combiner is connected with another auxiliary medium-high frequency receiving port of the second radio-frequency front-end device through the third filter.

27. The radio frequency transceiving system of claim 25, wherein said first antenna is connected to a first antenna port of said radio frequency MHB PA Mid device;

the second antenna is connected with the second end of the second combiner, and a first port of the second combiner is connected with an auxiliary receiving port of the radio frequency MHB PA Mid device through the first filter; the other first port of the second combiner is connected with the intermediate frequency auxiliary transceiving port of the second radio frequency front-end device; the intermediate frequency auxiliary receiving port of the second radio frequency front-end device is connected with an auxiliary intermediate and high frequency receiving port of the second radio frequency front-end device;

28. A communication device comprising the radio frequency transceiver system of any one of claims 25 to 27.

29. A radio frequency front-end device is characterized in that the radio frequency front-end device is used for a diversity antenna and a main diversity antenna radio frequency link and is provided with an intermediate frequency transmitting port, at least one intermediate and high frequency receiving port, an intermediate frequency auxiliary receiving and transmitting port and an intermediate frequency auxiliary receiving port; the radio frequency front end device comprises:

30. The radio frequency front end device of claim 29, further provided with a medium-high frequency antenna port, at least four medium-high frequency receive ports, at least two auxiliary receive ports; the radio frequency front end device further comprises:

the first receiving circuit is also connected with the medium-high frequency receiving port and the auxiliary receiving port, and is also used for amplifying a diversity signal of a first medium-frequency signal from the auxiliary receiving port and outputting the diversity signal to the medium-high frequency receiving port, amplifying a diversity MIMO signal of a second medium-frequency signal from the auxiliary receiving port and outputting the diversity MIMO signal to the medium-high frequency receiving port, and amplifying a diversity signal of at least a second medium-frequency signal in a plurality of medium-high frequency signals from the receiving channel and outputting the diversity MIMO signal to the medium-high frequency receiving port;

31. The radio frequency front end device of claim 30, wherein the first transmit circuit comprises: a first intermediate frequency power amplifier; the input end of the first intermediate-frequency power amplifier is connected with the intermediate-frequency transmitting port, and the output end of the first intermediate-frequency power amplifier is connected with an output port of the switching circuit.

32. The rf front-end device of claim 31, wherein the switching circuit is a preset first intermediate band duplexer, wherein the preset first intermediate band is a band in which the first intermediate band signal is located;

the other output port of the first intermediate-band duplexer is connected with the first receiving circuit and used for outputting the first intermediate-band signal received by the public port of the first intermediate-band duplexer.

33. The radio frequency front end device of claim 32, wherein the preset first mid-band comprises one of: b3, B1 frequency bands;

34. The radio frequency front end device of claim 30, further provided with a coupled output port;

35. The radio frequency front end device of claim 30, wherein the first receive circuit comprises: at least four low noise amplifiers, at least four second switching units, and a third switching unit; wherein the content of the first and second substances,

the input end of a low-noise amplifier is connected with a first port of a second switch unit, a second port of the second switch unit is connected with an output port of the switching circuit, and the output end of the low-noise amplifier is connected with a second port of a third switch unit and used for amplifying the first middle-frequency band signal and outputting the amplified first middle-frequency band signal to a middle-high frequency receiving port through the fourth switch unit;

36. A radio frequency transceiver system, comprising: a first antenna, a second antenna, a third antenna, a fourth antenna, a radio frequency transceiver, a second combiner, a fourth combiner, a first filter, a second filter, a third filter, a radio frequency MHB PA Mid device, and a third radio frequency front end device of any of claims 29-35; wherein the content of the first and second substances,

37. The radio frequency transceiving system of claim 36, wherein said first antenna is connected to a first antenna port of said radio frequency MHB PA Mid device;

the second antenna is connected with the second end of the second combiner, and a first port of the second combiner is connected with an auxiliary receiving port of the radio frequency MHB PA Mid device through the first filter; the other first port of the second combiner is connected with the intermediate frequency auxiliary transceiving port of the third radio frequency front-end device;

38. A communication device comprising the radio frequency transceiver system of claim 36 or 37.