CN114039614B

CN114039614B - Radio frequency front-end device, radio frequency transceiving system and communication equipment

Info

Publication number: CN114039614B
Application number: CN202111486324.7A
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: 2022-10-18
Anticipated expiration: 2041-12-07
Also published as: WO2023103687A1; CN114039614A

Abstract

The application discloses a radio frequency front-end device, a radio frequency transceiving system and communication equipment, which are used for a main set 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 mainboard area; moreover, the cost is reduced due to the improvement of the integration level of the device; moreover, through integration, wiring such as power supply and transmission control 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 advancement of technologies, 5G mobile communication technologies are 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 main set antenna radio frequency link and is provided with a first 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 first 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 first intermediate frequency transmitting port and outputting the first intermediate frequency signal through the intermediate frequency auxiliary transmitting port;

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

the radio frequency front-end device is also provided with a second intermediate frequency transmitting port, at least two receiving ports, a first antenna port and at least two auxiliary receiving ports; the intermediate frequency auxiliary transmitting port and the auxiliary receiving port are both connected with an external circuit; a second antenna port is also arranged; the radio frequency front end device further comprises:

a plurality of second ports of the first switch circuit are respectively connected with the second transmitting circuit and the first receiving circuit, and a first port of the first switch circuit is connected with the first antenna port and used for selectively conducting radio frequency paths between the second transmitting circuit and the first receiving circuit and the first antenna port; a first port of the first switch circuit is connected with the second antenna port;

the second transmitting circuit is connected with the second intermediate frequency transmitting port and is used for amplifying a second intermediate frequency signal in the plurality of intermediate frequency signals from the second intermediate frequency transmitting port and outputting the second intermediate frequency signal to the first antenna port, and amplifying a plurality of intermediate frequency signals except the second intermediate frequency signal from the second intermediate frequency transmitting port and outputting the plurality of intermediate frequency signals to the first antenna port or the second antenna port;

a first receiving circuit, connected to the receiving port, the auxiliary receiving port and the second transmitting circuit, for: amplifying the received first intermediate frequency band signal from an auxiliary receiving port connected with an external circuit and outputting the amplified first intermediate frequency band signal to a receiving port, amplifying a main set MIMO signal of a second intermediate frequency band signal from the auxiliary receiving port and outputting the amplified main set MIMO signal to the receiving port, and amplifying at least a second intermediate frequency band signal in a plurality of intermediate frequency band signals from a radio frequency channel and outputting the amplified second intermediate frequency band signal to the 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 radio frequency MHB L-PA Mid device.

An embodiment of the present application provides a radio frequency transceiving system (a first radio frequency transceiving system), including: 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, an LFEM device and one of the first radio frequency front end device; wherein,

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

the radio frequency transceiver is connected with a fourth antenna through the LFEM device, the second filter, the third filter and the 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 provides a communication device, including the radio frequency transceiving system described in any one of the above.

The first radio frequency front-end device provided by the embodiment of the application is used for a main 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 present application further provides a radio frequency front end device (a second radio frequency front end device), which is used for a main set antenna radio frequency link and is provided with a first intermediate frequency transmitting port, at least one receiving port, at least one auxiliary receiving port, an intermediate frequency auxiliary receiving and transmitting port, and an intermediate frequency auxiliary receiving port; the intermediate frequency auxiliary receiving port is connected with an auxiliary receiving port through a radio frequency line; the radio frequency front end device comprises:

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

the first receiving circuit is connected with the receiving port and the auxiliary receiving port and used for amplifying a first middle-frequency-band signal which is received by the intermediate-frequency auxiliary receiving port and comes from the auxiliary receiving port connected with the intermediate-frequency auxiliary receiving port and outputting the first middle-frequency-band signal to the receiving port;

the radio frequency front-end device, wherein the auxiliary receiving ports include at least two; the radio frequency front-end device is also provided with a second intermediate frequency transmitting port and a first antenna port; a second antenna port is also arranged; the radio frequency front end device further comprises:

the first receiving circuit is further connected to the second transmitting circuit, and is further configured to amplify at least a second intermediate frequency band signal of the multiple intermediate frequency band signals from the radio frequency path and output the amplified second intermediate frequency band signal to a receiving port, and amplify a main set MIMO signal of the second intermediate frequency band signal from an auxiliary receiving port and output the amplified main set MIMO signal to the receiving port;

the radio frequency front-end device is a radio frequency MHB L-PA Mid device.

An embodiment of the present application further provides a radio frequency transceiving system (a second radio frequency transceiving system), including: 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, an LFEM device, and any one of the above second rf front-end devices; wherein,

the radio frequency transceiver is connected with the first antenna through a second radio frequency front-end device to form a transmitting channel of the intermediate frequency band signal at least comprising the 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 second radio frequency front-end 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 at least a main set MIMO receiving channel of a second intermediate frequency band signal;

the radio frequency transceiver is connected with a third antenna through an LFEM device to form a diversity receiving channel of the intermediate frequency band signal at least comprising a second intermediate frequency band signal;

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

The second radio frequency front-end device provided by the embodiment of the application is used for a main 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 Printed Circuit Board (PCB) is reduced, the integration level of a radio frequency device is improved, the cost is reduced, in addition, after integration, wiring such as power supply and transmission control 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 main set antenna radio frequency link and is provided with a first intermediate frequency transmitting port, at least one receiving port, and an intermediate frequency auxiliary transceiving port; the radio frequency front end device comprises:

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

the first receiving circuit is connected with the receiving port and the switching circuit and used for amplifying a first intermediate frequency band signal received by the intermediate frequency auxiliary receiving and transmitting port of the switching circuit and outputting the first intermediate frequency band signal to a receiving port;

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

the radio frequency front-end device is also provided with a second intermediate frequency transmitting port, a first antenna port and at least one auxiliary receiving port; a second antenna port is also arranged; the radio frequency front end device further comprises:

a plurality of second ports of the first switch circuit are respectively connected with the second transmitting circuit and the first receiving circuit, and a first port of the first switch circuit is connected with the first antenna port and used for selectively conducting radio frequency paths between the second transmitting circuit and the first receiving circuit and the first antenna port respectively; a first port of the first switch circuit is connected with the second antenna port;

the first receiving circuit is further connected to the second transmitting circuit, and is further configured to amplify at least a second intermediate frequency signal of the multiple intermediate frequency signals from the radio frequency path and output the amplified second intermediate frequency signal to another receiving port, and amplify a main set MIMO signal of the second intermediate frequency signal from an auxiliary receiving port and output the amplified main set MIMO signal to one receiving port;

the radio frequency front-end device is a radio frequency MHB L-PA Mid device.

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, an LFEM device and any one of the third radio frequency front-end devices; wherein,

the radio frequency transceiver is connected with the first antenna through a third radio frequency front-end device to form a transmitting channel of the intermediate frequency signals at least comprising second intermediate frequency signals and a main set receiving channel of the intermediate frequency signals at least comprising the second intermediate frequency signals;

the radio frequency transceiver is connected with a second antenna through a third radio frequency front-end 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 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 Printed Circuit Board (PCB) is reduced, the integration level of a radio frequency device is improved, the cost is reduced, in addition, after integration, wiring such as power supply and transmission control is reduced, the complexity of single-board wiring layout is further 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 radio frequency MHB L-PA Mid device in an embodiment of the present application;

fig. 5 is a schematic structural diagram of a first embodiment of a first rf transceiver system in an embodiment of the present application;

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

fig. 7 is a schematic structural diagram of a first embodiment of a second rf front-end device in an embodiment of the present application;

fig. 8 is a schematic structural diagram of a second embodiment of a second rf front-end device in an embodiment of the present application;

fig. 9 is a schematic structural diagram of a third 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 radio frequency MHB L-PA Mid device in an embodiment of the present application;

fig. 11 is a schematic structural diagram of a first embodiment of a second rf transceiver system in an embodiment of the present application;

fig. 12 is a schematic structural diagram of a second embodiment of a second rf transceiver system in an embodiment of the present application;

fig. 13 is a schematic structural diagram of a first embodiment of a third rf front-end device in an embodiment of the present application;

fig. 14 is a schematic structural diagram of a second embodiment of a third rf front-end device in an embodiment of the present application;

fig. 15 is a schematic structural diagram of a third embodiment of a third rf front-end device in an embodiment of the present application;

FIG. 16 is a schematic structural diagram of a third radio frequency MHB L-PA Mid device in an embodiment of the present application;

fig. 17 is a schematic structural diagram of a first embodiment of a third rf transceiving system according to the present application;

fig. 18 is a schematic structural diagram of a second embodiment of a third rf transceiving system according to the present application.

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," or "having," and the like, 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.

A non-Standalone Networking (NSA) schema may include an architecture such as any of: 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 the 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, a 5G base station is a main station, a 4G base station is an auxiliary station, and the NE-DC refers to the double connection of a 5G NR and a 4G wireless 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 main set antenna rf link, and as shown in fig. 1, the first rf front-end device is at least provided with a first intermediate frequency transmission port MB RFIN1 and an intermediate frequency auxiliary transmission port MB TX OUT; the first radio frequency front end device comprises at least:

the first transmitting circuit 110 is connected to the first intermediate frequency transmitting port MB RFIN1 and the intermediate frequency auxiliary transmitting port MB TX OUT, and configured to perform power amplification processing on the first intermediate frequency signal from the first intermediate frequency transmitting port MB RFIN1 and output the first intermediate frequency signal through the intermediate frequency auxiliary transmitting port MB TX OUT;

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

IN an exemplary example, the first radio frequency front end device is further provided with a second intermediate frequency transmit port MB RFIN2, at least two receive ports LNA OUT, a first antenna port ANT1 and at least two auxiliary receive ports LNA IN; the intermediate frequency auxiliary transmitting port MB TX OUT and an auxiliary receiving port LNA IN are both connected with an external circuit; the rf front-end device shown in fig. 1 further includes:

a first switch circuit 130, wherein a plurality of second ports of the first switch circuit 130 are respectively connected to the second transmitting circuit 120 and the first receiving circuit 140, and a first port of the first switch circuit 130 is connected to the first antenna port ANT1, and is configured to selectively conduct radio frequency paths between the second transmitting circuit 120 and the first receiving circuit 140, and the first antenna port ANT1;

a second transmitting circuit 120, connected to the second intermediate frequency transmitting port MB RFIN2, configured to amplify at least a second intermediate frequency signal of the plurality of intermediate frequency signals from the second intermediate frequency transmitting port MB RFIN 2;

a first receiving circuit 140, connected to the receiving port LNA OUT, the auxiliary receiving port LNA IN, and the second transmitting circuit 120, for amplifying a first intermediate frequency band signal received from the auxiliary receiving port LNA IN connected to an external circuit and outputting the amplified signal to the receiving port LNA OUT, for amplifying a main MIMO signal of a second intermediate frequency band signal from the auxiliary receiving port LNA IN and outputting the amplified signal to the receiving port LNA OUT, and for amplifying at least a second intermediate frequency band signal of a plurality of intermediate frequency band signals from the rf path and outputting the amplified signal to the receiving port LNA OUT;

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 transmitting circuit 120 is connected to the plurality of second ports of the first switching circuit 130 in a one-to-one correspondence, and is further configured to amplify the plurality of intermediate frequency signals, except the second intermediate frequency signal, from the second intermediate frequency transmitting port MB RFIN2 and output the amplified signals to the first switching circuit 130; the first receiving circuit 140 is further connected to the plurality of second ports of the first switch circuit 130 in a one-to-one correspondence manner, and is configured to amplify the plurality of middle-band signals from the first switch circuit 130 and output the amplified signals to the receiving port LNA OUT.

The embodiment shown in fig. 1 of the present application provides a first rf front-end device that supports receiving and transmitting of multiple mid-band signals of 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 and 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 preset second intermediate frequency band may include, but is not limited to, one of the following: n1, N3 and the like. 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 and the like.

The first 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 first rf front-end device is provided with a first if transmitting port MB RFIN1, a second if transmitting port MB RFIN2 and at least two receiving ports LNA OUT for connecting to an rf transceiver, a first antenna port ANT1 for connecting to an antenna, and an if auxiliary transmitting port MB TX OUT and at least two auxiliary receiving ports LNA IN. The receiving port LNA OUT, the first intermediate frequency transmitting port MB RFIN1, the second intermediate frequency transmitting port MB RFIN2, the first antenna port ANT1, the intermediate frequency auxiliary transmitting port MB TX OUT, and the auxiliary receiving port LNA IN may be understood as radio frequency pin terminals of the first radio frequency front end device, and are used for being connected with external devices. In one embodiment, the receive port LNA OUT, the first intermediate frequency transmit port MB RFIN1 and the second intermediate frequency transmit port MB RFIN2 may be used for connection with a radio frequency transceiver; the first antenna port ANT1 may be configured to be connected to an antenna, and may output a plurality of intermediate frequency signals including a second intermediate frequency signal, which are processed by the first radio frequency front-end device, to the antenna, and may also transmit each intermediate frequency signal including the second intermediate frequency signal, which is received by the antenna, to the first radio frequency front-end device; the intermediate frequency auxiliary transmitting port MB TX OUT and an auxiliary receiving port LNA IN are both connected with an external circuit so as to realize the transmission and the reception of the first intermediate frequency band signal.

IN an exemplary example, the external circuit is a switching circuit, and the switching circuit is connected to the intermediate frequency auxiliary transmission port MB TX OUT, an auxiliary reception port LNA IN, and an antenna, respectively. In an embodiment, the switching circuit may be a first intermediate band Duplexer, where the predetermined 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 dividing the transmitting and receiving signals of an antenna into two different signal paths according to the direction of the signals so as to realize single-antenna two-way 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; presetting that the other output port of the first intermediate frequency band duplexer is connected with an auxiliary receiving port LNA IN and used for receiving the 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 one illustrative example, as shown in fig. 1, the first rf front-end device may include: a first transmitting circuit 110, a second transmitting circuit 120, 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 a first intermediate frequency transmitting port MB RFIN1, and performs amplification processing on a first intermediate frequency signal received by the first intermediate frequency transmitting port MB RFIN 1; 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 transmitting circuit 110 is provided with a transmitting path to support the transmission of the first intermediate frequency 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 first intermediate frequency transmitting port MB RFIN1, the first transmitting circuit 110, the intermediate frequency auxiliary transmitting port MB TX OUT, an external circuit (such as a preset first intermediate frequency duplexer), and an antenna together form a transmitting path.

In an exemplary example, as shown in fig. 1, the input terminal of the second transmitting circuit 120 is connected to the second intermediate frequency transmitting port MB RFIN2, and amplifies a plurality of intermediate frequency signals including the second intermediate frequency signal received by the second intermediate frequency transmitting port MB RFIN 2; the output of the second transmitting circuit 120 includes: a plurality of output ports connected in one-to-one correspondence with the plurality of second terminals of the first switch circuit 130, and a plurality of output ports connected in one-to-one correspondence with the plurality of input ports of the first receiving circuit 140.

In an exemplary embodiment, the first rf front-end device shown in fig. 1 is further provided with a second antenna port ANT2 connected to another first port of the first switch circuit 130. In an embodiment, the second transmitting circuit 120 may amplify a plurality of intermediate frequency signals received by the second intermediate frequency transmitting port MB RFIN2, wherein a second intermediate frequency signal of the plurality of intermediate frequency signals is output to the first switching circuit 130 after being amplified. In one embodiment, the second transmit circuit 120 may be provided with multiple transmit paths to support the transmission of multiple mid-band signals. Illustratively, the frequency bands corresponding to the plurality of intermediate frequency band signals may include at least, for example, B1/N1, B3/N3, B66, B25, B34, and B39 frequency bands. For example, the frequency band corresponding to the second intermediate frequency band signal may include, for example, an N1 or N3 frequency band, and may also include, for example, a B3 or B1 frequency band. In one embodiment, the second transmit path may include: a second intermediate frequency transmission port MB RFIN2, a second transmission circuit 120, a first switch circuit 130, and a first antenna port ANT1 or a second antenna port ANT 2.

IN an exemplary example, as shown IN fig. 1, the first receiving circuit 140 is connected to the first switching circuit 130, the second transmitting circuit 120, the receiving port LNA OUT, and the auxiliary receiving port LNA IN, respectively. An output terminal of the first receiving circuit 140 is connected to the receiving port LNA OUT. The input terminal of the first receiving circuit 140 includes: a plurality of input ports connected IN one-to-one correspondence with the plurality of second terminals of the first switching circuit 130, at least two auxiliary reception ports LNA IN, and a plurality of input ports connected IN one-to-one correspondence with the plurality of output ports of the second transmission circuit 120. The first receiving circuit 140 amplifies and outputs a main set MIMO signal including a radio frequency signal of a second intermediate band signal from a plurality of input ports, a first intermediate band signal from an auxiliary receiving port LNA IN connected to an external circuit, and a second intermediate band signal from another auxiliary receiving port to a receiving port LNA OUT.

The first receiving circuit 140 in this embodiment supports reception control of any of the aforementioned intermediate frequency band signals. In one embodiment, the first receiving circuit 140 may be provided with a plurality of receiving paths to support the reception of a plurality of mid-band signals. In one embodiment, the receive path may include: a receiving path formed by the first antenna port ANT1, the first switch circuit 130, the first receiving circuit 140 and any receiving port LNA OUT, a receiving path formed by the first antenna port ANT1, the first switch circuit 130, the second transmitting circuit 120, the first receiving circuit 140 and any receiving port LNA OUT, and a receiving path formed by the auxiliary receiving port LNA IN, the first receiving circuit 140 and any receiving port LNA OUT. That is, a receiving path may be set for the if signal of each band to support receiving processing of multiple if signals.

The first radio frequency front-end device shown in fig. 1 is used for a main 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 the 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 the first rf front-end device IN the embodiment of the present application, and as shown IN fig. 2, IN an exemplary example, the first rf front-end device is further provided with a high-frequency transmission port HB RFIN, a 2G high-frequency transmission port 2G HB IN, and a high-frequency auxiliary transmission port HB TX OUT and a plurality of auxiliary transceiving ports TRX (e.g., TRX1, TRX2, and TRX 3) connected to an external device, and the first rf front-end device may further include: a third transmitting circuit 160 and a second switching circuit 170.

In an exemplary example, the input terminal of the third transmitting circuit 160 is connected to the high frequency transmitting port HB RFIN, the output ports of the third transmitting circuit 160 are connected to the second terminals of the first switching circuit 130, an output port of the third transmitting circuit 160 is connected to the high frequency auxiliary transmitting port HB TX OUT, the output ports of the third transmitting circuit 160 are connected to the input ports of the first receiving circuit 140, and the third transmitting circuit 160 is configured to amplify the received high frequency signal; the high-band signals are 4G signals and 5G signals. Illustratively, the plurality of high frequency signals may include, for example: b7, B40, B41 and other frequency band signals.

IN an exemplary embodiment, the first terminal of the second switch circuit 170 is connected to a second terminal of the first switch circuit 130, and a plurality of second ports of the second switch circuit 170 are respectively connected to the plurality of auxiliary transceiving ports TRX and the 2G high frequency transmission port 2G HB IN; an auxiliary transceiver port TRX is connected to a second port of the first switch circuit 130.

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, that is, a high band signal, such as an N41 band, where the transceiving of the high band signal is implemented by the third transmitting circuit, the first switching circuit and the first receiving circuit, and the implementation is easy to understand and will not be described in detail herein.

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 CPLOUT2 and a coupling input port CPLIN2, and the first rf front-end device further includes a coupling circuit 183, 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 coupled signal through the coupling output port CPLOUT 2. 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 CPLIN2 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 CPLOUT2 of the radio frequency front end device to which the coupling input port CPLIN2 belongs, so as to implement transmission of the other external coupling signals.

As shown in fig. 3, the first radio-frequency front-end device in the embodiment of the present application is further provided with a coupling output port CPLOUT1 and a coupling input port CPLIN1, and the first radio-frequency front-end device in the embodiment of the present application further includes a first coupling unit 181, a second coupling unit 182, and a coupling switch 184. The first coupling unit 181 may be coupled in a radio frequency path between the first switch circuit 130 and the first antenna port ANT1, and configured to couple a radio frequency signal in the radio frequency path, so as to output a first coupled signal through a coupling end of the first coupling unit 181. The first coupled signal can be used for measuring the forward coupling power and the reverse coupling power of the radio frequency signal. The second coupling unit 182 may be coupled in a radio frequency path between the first switching circuit 130 and the second antenna port ANT2, for coupling a radio frequency signal in the radio frequency path to output a second coupled signal through a coupling port of the second coupling unit 182. Wherein the second coupled signal is operable to measure the forward coupled power and the reverse coupled power of the radio frequency signal.

The first coupling unit 181 and the second coupling unit 182 have the same structure. Taking the first coupling unit 181 as an example, the first coupling unit 181 includes an input terminal, an output terminal, and a coupling terminal. An input end of the first coupling unit 181 is connected to the first switch circuit 130, an output end of the first coupling unit 181 is connected to the first antenna port ANT1, and the coupling end is configured to couple the intermediate frequency signal received by the input end and output a first coupling signal, where the first coupling signal includes a first forward coupling signal and a first backward coupling signal. The forward power information of the intermediate frequency signal can be detected based on a first forward coupling signal output by the coupling end; based on the first reverse coupling signal output by the coupling terminal, the reverse power information of the intermediate frequency signal can be correspondingly detected, and the detection mode is defined as a reverse power detection mode.

The coupling switch 184 is connected to the coupling end of the first coupling unit 181, the coupling end of the second coupling unit 182, and the coupling output port CPLOUT1, respectively, and is configured to selectively output the first coupling signal or the second coupling signal to the coupling output port CPLOUT1. That is, the coupling switch 184 is used to switch between a detection mode of the first coupling signal and a detection mode of the second coupling signal. The coupling input port CPLIN1 may be used for connecting with other external radio frequency front end devices having the coupling output port CPLOUT, and is used for receiving coupling signals output by the other external radio frequency front end devices, and outputting the received coupling signals through the coupling output port CPLOUT1 of the radio frequency front end device to which the coupling input port CPLIN1 belongs, so as to implement transmission of the other external coupling signals.

The embodiment of the application provides that the first radio frequency front-end device is a radio frequency L-PA Mid device. The radio frequency L-PA Mid device can be understood as a Power Amplifier module (L-PA Mid Power Amplifier Modules including Duplexers and WithLNA) with a built-in low noise Amplifier. The radio frequency L-PA Mid device 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 a plurality of intermediate frequency signals and switching control between transmitting and receiving, realize receiving switching control and transmitting switching control among a 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. Therefore, the radio frequency L-PA Mid device in the embodiment of the present application may also be referred to as a medium-High frequency power amplifier module (MHB L-PA Mid, middle and High Band PA Mid With LNA) With a built-in low noise amplifier.

Fig. 4 is a schematic structural diagram of an embodiment of a first radio frequency MHB L-PA Mid device IN the embodiment of the present application, and as shown IN fig. 4, IN an embodiment, the first radio frequency MHB L-PA Mid device is provided with a first intermediate frequency transmit port MB RFIN1 for connecting with a radio frequency transceiver, a second intermediate frequency transmit port MB RFIN2, at least two receive ports LNA OUT, an intermediate frequency auxiliary transmit port MB TX OUT for connecting with an external circuit, a first antenna port ANT1 for connecting with an antenna, and at least two auxiliary receive ports LNA IN. The receiving port LNA OUT, the first intermediate frequency transmitting port MB RFIN1, the second intermediate frequency transmitting port MB RFIN2, the intermediate frequency auxiliary transmitting port MB TX OUT, the first antenna port ANT1, and the auxiliary receiving port LNA IN may be understood as radio frequency pin terminals of the radio frequency LB L-PA Mid device, and are used to connect with external devices. In one embodiment, the receiving port LNA OUT, the first intermediate frequency transmitting port MB RFIN1, the second intermediate frequency transmitting port MB RFIN2 may be used for connection with a radio frequency transceiver; the first antenna port ANT1 may be configured to be connected to an antenna, and may output, to the antenna, a plurality of intermediate frequency band signals including a second intermediate frequency band signal processed by the radio frequency MHB L-PA Mid device, and may also transmit, to the radio frequency MHB L-PA Mid device, each intermediate frequency band signal including the second intermediate frequency band signal received by the antenna; the auxiliary intermediate frequency transmitting port MB TX OUT and the auxiliary receiving port LNA IN are both connected to an external circuit 10 to realize the transmission and reception of the first intermediate frequency band signal, and the external circuit 10 can be used to filter and isolate the first intermediate frequency band transmitting signal and the first intermediate frequency band receiving signal of the preset first intermediate frequency band, so as to ensure the normal operation of receiving and transmitting.

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 first intermediate frequency transmit port MB RFIN1, 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 first intermediate frequency transmit port MB RFIN 1. 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 first intermediate frequency transmitting port MB RFIN1, the first intermediate frequency power amplifier 111, the intermediate frequency auxiliary transmitting port MB TX OUT, the external circuit 10 (for example, a preset first intermediate frequency duplexer), 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 radio-frequency MHB L-PA Mid device, so that an external multi-mode multi-frequency power amplifier device is not needed, 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, wiring such as power supply and transmission control is reduced after integration, the complexity of single-board layout is reduced, and the performances of a radio-frequency transceiving system and communication equipment are improved.

In an exemplary embodiment, as shown in fig. 4, the first radio frequency MHB L-PA Mid device is further provided with a second antenna port ANT2 connected to a first port of the first switch circuit 130. The second transmitting circuit 120 may include at least: a second intermediate frequency power amplifier 121, a second switching unit 122; an input end of the second intermediate frequency power amplifier 121 is connected to the second intermediate frequency transmitting port MB RFIN2, an output end of the second intermediate frequency power amplifier 121 is connected to a first port of the second switch unit 122, and is configured to perform power amplification processing on a plurality of intermediate frequency signals including the second intermediate frequency signals received through the second intermediate frequency transmitting port MB RFIN2, a plurality of second ports of the second switch unit 122 are correspondingly connected to a plurality of second ports of the first switch circuit 130, output the second intermediate frequency signals amplified by the second intermediate frequency power amplifier 121 to the first antenna port, and output the plurality of intermediate frequency signals amplified by the second intermediate frequency power amplifier 121 except the second intermediate frequency signals to the first antenna port or the second antenna port. The first ports of the second switch unit 122 are correspondingly connected to the first receiving circuit 140, and are used for outputting the intermediate frequency signals from the first switch circuit 130 to the first receiving circuit 140. In one embodiment, the second transmitting circuit 120 may further include: the plurality of first filtering units 1131 and the plurality of second filtering units 1132, the plurality of second ports of the second switching unit 122 are respectively connected to the first switching circuit 130 through the first filtering unit 1131 or the second filtering unit 1132, and are configured to filter the plurality of intermediate frequency signals, which include the second intermediate frequency signal and are amplified by the second intermediate frequency power amplifier 121, and output the filtered signals to the first switching circuit 130. In an embodiment, the second port of the second switch unit 122 connected to one end of the first filter unit 1131 or the second filter unit 1132 may include five ports, which correspond to, for example, B1/N1, B3/N3/B66, B25, B234 and B39 frequency bands, respectively. In one embodiment, the second mid-band signal comprises an N1 or N3 band signal. In one embodiment, the second transmit path may include: a second if transmit port MB RFIN2, a second if power amplifier 121, a second switch unit 122, a first filter unit 1131 or a second filter unit 1132, a first switch circuit 130, and a first antenna port ANT1 or a second antenna port ANT2 together form a transmit path.

In an illustrative example, the first receiving circuit 140 may include: at least three low noise amplifiers 143, at least one third switching unit 142, and a fourth switching unit 144; wherein,

an input end of a low noise amplifier 143 (e.g., the low noise amplifier LNA1 in the embodiment shown in fig. 4) is connected to a first port of a third switching unit 142 (e.g., the third switching unit SP3T #1 in the embodiment shown in fig. 4), a second port of the third switching unit SP3T #1 is connected to the first switching circuit 130, an output end of the low noise amplifier LNA1 is connected to a second port of the fourth switching unit 144, and the low noise amplifier LNA1 is configured to amplify the second if signal and output the amplified signal to a receiving port LNA OUT (e.g., the receiving port LNA OUT1 in the embodiment shown in fig. 4) via the fourth switching unit 144;

an input end of a low noise amplifier 143 (e.g., the low noise amplifier LNA6 IN the embodiment shown IN fig. 4) is connected to an auxiliary receiving port LNA IN (e.g., the auxiliary receiving port LNA IN6 IN the embodiment shown IN fig. 4) connected to the external circuit 10, and an output end of the low noise amplifier LNA6 is connected to a second end of the fourth switching unit 144, for amplifying the received first middle-band signal and outputting the amplified signal to another receiving port LNA OUT (e.g., the receiving port LNA OUT6 IN the embodiment shown IN fig. 4) via the fourth switching unit 144;

an input terminal of a low noise amplifier 143 (e.g. the low noise amplifier LNA5 IN the embodiment shown IN fig. 4) is connected to the auxiliary receiving port LNA IN (e.g. the auxiliary receiving port LNA IN5 IN the embodiment shown IN fig. 4), and an output terminal of the low noise amplifier LNA5 is connected to a second port of the fourth switching unit 144, for amplifying the main set MIMO signal of the second intermediate frequency band signal and outputting the amplified main set MIMO signal to a further receiving port LNA OUT (e.g. the receiving port LNA OUT5 IN the embodiment shown IN fig. 4) through the fourth switching unit 144.

IN an exemplary example, the first ports of the third switching units 142 are respectively connected to the input terminals of the partial low noise amplifiers 143, and the second ports of the third switching units 142 may be connected to the first switching circuits 130 and may also be connected to the auxiliary receiving ports LNA IN. Taking the third switching unit SP3T #1 as an example, the first port of the third switching unit SP3T #1 is connected to the input terminal of the low noise amplifier LNA1, and two second ports of the third switching unit SP3T #1 are connected to the first switching circuit 130, and one second port is connected to the auxiliary receiving port LNA IN 1.

In an exemplary example, the first receiving circuit 140 may further include a plurality of fifth switching units 141, a plurality of third filtering units 1133. The input end of the third filtering unit 1133 may be correspondingly connected to the first switch circuit 130, and the output end of the third filtering unit 1133 may be correspondingly connected to a second port of the third switch unit 142 or the fifth switch unit 141, so as to filter the received middle frequency band signal, where the frequency bands of the middle frequency band signals output by the third filtering unit 1133 are different.

IN an exemplary embodiment, the first ports of the fifth switch units 141 may be respectively connected to the input terminals of the partial low noise amplifiers 143, the second ports of the fifth switch units 143 may be connected to the first switch circuit 130, and may also be connected to the auxiliary receiving port LNA IN, and the output terminals of the low noise amplifiers 143 (such as the low noise amplifiers LNA2, LNA3, LNA4, and LNA5 IN the embodiment shown IN fig. 4) are connected to a second port of the fourth switch unit 144. Taking the fifth switch unit SP4T #1 as an example, the first port of the fifth switch unit SP4T #1 is connected to the input terminal of the low noise amplifier LNA2, three ports of the second port of the fifth switch unit SP4T #1 are connected to the first switch circuit 130, and one port is connected to the auxiliary reception port LNA IN 2.

It should be noted that, in the embodiment of the present application, the first filtering unit 1131, the second filtering unit 1132, and the third filtering unit 1133 are not further limited, and may be set according to actual requirements.

In one embodiment, the receive path may include: the antenna system comprises a first antenna port ANT1 or a second antenna port ANT1, a first switch circuit 130, a third switch unit 142 or a fifth switch unit 141, a low noise amplifier 143, a fourth switch unit 144, and a receiving path formed by any receiving port LNA OUT, an intermediate frequency auxiliary transmitting port MB TX OUT, an external circuit 10 (such as a first intermediate frequency band duplexer preset with a first intermediate frequency band), an auxiliary receiving port LNA IN, a low noise amplifier 143, a fourth switch unit 144, and another receiving path formed by any receiving port LNA OUT, and another receiving path formed by other external circuits (not shown IN the figure), the third switch unit 142, the low noise amplifier 143, the fourth switch unit 144, and any receiving port LNA OUT.

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 DP7T. A first port of the first switch unit 131 is connected to the first antenna port ANT1, and the other first port is connected to the second antenna port ANT 2; a part of the second ports of the first switching unit 131 is connected to the plurality of first filtering units 1131, the plurality of second filtering units 1132, and the plurality of third filtering units 1133, respectively. IN an exemplary embodiment, the radio frequency MHB L-PA Mid device further includes a high frequency transmission port HB RFIN, a 2G high frequency transmission port 2G HB IN, and a high frequency auxiliary transmission port HB TX OUT, a plurality of auxiliary transceiving ports TRX connected to an external switching circuit, and further includes a third transmission circuit 160 and a second switching circuit 170. In an exemplary example, the third transmitting circuit 160 may be composed of a power amplifier and a switching unit.

In an exemplary example, an input terminal of the third transmitting circuit 160 is connected to the high frequency transmitting port HB RFIN, a plurality of output ports of the third transmitting circuit 160 are connected to a plurality of second ports of the first switching circuit 130, an output port of the third transmitting circuit 160 is connected to the high frequency auxiliary transmitting port HB TX OUT, a plurality of output ports of the third transmitting circuit 160 are connected to a plurality of input ports of the first receiving circuit 140, and the third transmitting circuit 160 is configured to amplify the received high frequency band signal; the high-band signals are 4G signals and 5G signals. Illustratively, the plurality of high frequency signals may include, for example: b7, B40, B41 and other frequency band signals.

IN an exemplary example, the second switching circuit 170 may include a seventh switching unit 171 such as SP3T, a first port of the seventh switching unit 171 being connected with a second port of the first switching circuit 130, and a second port of the seventh switching unit 171 being connected with a plurality of auxiliary transceiving ports TRX and a 2G high frequency transmission port 2G HB IN. An auxiliary transceiver port TRX is connected to a second end of the first switch circuit 130.

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, the first radio frequency MHB L-PA Mid device is further provided with a coupling output port CPLOUT2, and the radio frequency MHB L-PA Mid device further includes a coupling circuit 183, provided in a 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 2.

In an illustrative example, the first radio frequency MHB L-PA Mid device is further provided with a coupling output port CPLOUT1, and the radio frequency MHB L-PA Mid device further includes a first coupling unit 181, a second coupling unit 182, and a coupling switch 184. The first coupling unit 181 may be coupled in a radio frequency path between the first switch unit 131 and the first antenna port ANT1, and configured to couple a radio frequency signal in the radio frequency path to output a first coupled signal through a coupling end of the first coupling unit 181; the second coupling unit 182 may be coupled in the radio frequency path between the first switching unit 131 and the second antenna port ANT2, for coupling the radio frequency signal in the radio frequency path to output a second coupled signal through the coupling port of the second coupling unit 172; the coupling switch 184 is respectively connected to the coupling end of the first coupling unit 181, the coupling end of the second coupling unit 182, and the coupling output port CPLOUT1, and is configured to selectively output the first coupling signal or the second coupling signal to the coupling output port CPLOUT1.

In an illustrative example, the first radio frequency MHB L-PA Mid device may further include: a first controller 191 and a second controller 192. The first controller 191 is connected to each switch unit and each power amplifier in the radio frequency MHB L-PA Mid device, respectively, and is configured to control on/off of each switch unit and control a working state of each power amplifier. A second controller 192 may be coupled to each of the low noise amplifiers for adjusting the gain factor of each of the low noise amplifiers.

The first controller 191 and the second controller 192 may be Mobile Industry Processor Interface (MIPI) and radio frequency Front End Control Interface (RFFE) Control units or radio frequency Front End Control Interface (RFFE) Control units, which conform to a Control protocol of an RFFE bus. When the first controller 191 and the second controller 192 are MIPI-RFFE control units or RFFE control units, the radio frequency MHB L-PA Mid device is further provided with an input pin CLK of a clock signal, an input or bidirectional pin SDATAS of a single/bidirectional data signal, a power supply pin VDD, a reference voltage pin VIO, and the like, so as to control a power amplifier, each switch unit, and a low noise amplifier in the radio frequency MHB L-PA Mid device.

Based on the miniaturization development trend of a main board of terminal equipment, the embodiment of the application provides a first radio frequency MHB L-PA Mid device, and the composition of the first radio frequency MHB L-PA Mid device is shown in FIG. 4. The whole chip integrates multi-band transmitting and receiving channels, including B1/N1, B3/N3, B66, B25, B34, B39, B7, B40, B41 and 2G HB GSM, as well as 3 auxiliary receiving and transmitting ports TRX and 6 auxiliary receiving ports LNA IN for external band extension.

Based on the first radio frequency MHB L-PA Mid device as shown in fig. 4, a non-independent networking mode may be supported. For example, the illustration is made by taking an EN-DC combination of B3+ N1 as an N1 band, where a dual connection of 4G and 5G is implemented, and the first intermediate band may be, for example, a B3 band, and the second intermediate band may be, for example, a B3+ N1 band.

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

the first intermediate frequency transmission port MB RFIN1 → 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 receiving path of the B3 band is as follows:

antenna → first mid-band duplexer 10 → auxiliary receiving port LNA IN6 → low noise amplifier LNA6 → contact 6 of the fourth switching unit 144 → receiving port LNA OUT6 → radio frequency transceiver.

The transmission path of the N1 frequency band is as follows:

the second middle frequency transmission port MB RFIN2 → the second middle frequency power amplifier 121 → the contact 1 of the second switch unit 122 → the contact 4 of the second switch unit 122 → the first filter unit 1131 → the contact 4 of the first switch unit 131 → the contact 1 of the first switch unit 131 → the first antenna port ANT1.

The receiving path of the N1 frequency band is as follows:

the first antenna port ANT1 → the contact 1 of the first switching unit 131 → the contact 4 of the first switching unit 131 → the third filtering unit 1133 → a third switching unit 142 (e.g., SP3T # 1) → the low noise amplifier LNA1 → the contact 1 of the fourth switching unit 144 → the reception port LNA OUT1 → the radio frequency transceiver.

The first radio frequency MHB L-PA Mid 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 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, where the radio frequency transceiving system is implemented by using the first radio frequency MHB L-PA Mid device and the low frequency front end Module (LFEM, L Frontend Module) provided in the embodiment of the present application. The LFEM device in the embodiments of the present application includes at least: the antenna comprises a medium-high frequency antenna port MHB ANT, two auxiliary receiving ports LNA AUX IN, at least three medium-high frequency receiving ports LNA OUT MHB, corresponding receiving circuits and switch circuits, and a diversity receiving processing of a plurality of medium-frequency signals is at least supported. It should be noted that the specific implementation of the LFEM device is not intended to limit the scope of the present application.

Fig. 5 is a schematic structural diagram of a first embodiment of a first rf transceiver system in an embodiment of the present application, and as shown in fig. 5, the first rf transceiver system at least includes: the rf transceiver includes a first antenna ANT1, a second antenna ANT2, a third antenna ANT3, a fourth antenna ANT4, a rf transceiver 40, an external circuit 10, a first rf front-end device (e.g., a first rf MHB L-PA Mid device 50) and an LFEM device 60 in any of the foregoing embodiments of fig. 1 to 4, a second combiner 82, a fourth combiner 84, a first filter 71, a second filter 72, and a third filter 73. Wherein,

the radio frequency transceiver 40 is connected with the first antenna ANT1 through the radio frequency MHB L-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 with a second antenna ANT2 through a radio frequency MHB L-PA Mid device 50, an external circuit 10, a first filter 71 and a second combiner 82 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 40 is connected with a third antenna ANT3 through the LFEM device 60 to form a diversity receiving channel of the intermediate frequency band signal at least including the second intermediate frequency band signal;

the radio frequency transceiver 40 is connected with a fourth antenna ANT4 through the LFEM device 60, the second filter 72, the third filter 73 and the fourth combiner 84 to form a diversity receiving channel of the first intermediate frequency band signal and a diversity MIMO receiving channel of 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 a B3 band and the second intermediate frequency band is an N1 band. In one embodiment, the first intermediate frequency band is a B1 band and the second intermediate frequency band is an N3 band.

In one embodiment, the first antenna ANT1 may be used for transmitting and receiving the main set of the second middle frequency 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 and 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 a 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 second intermediate frequency signals, 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 TX OUT of the radio frequency MHB L-PA Mid device 50, and is configured to transmit the first intermediate frequency signals, and another 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, and is configured to receive the main set of the 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 the first intermediate frequency band signal and diversity MIMO reception of the second intermediate frequency band 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 receive the second intermediate frequency band 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 receive the first intermediate frequency band signal IN a diversity manner. 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 exemplary embodiment, the external circuit 10 is a switching circuit, and the switching circuit is connected to the intermediate frequency auxiliary transmitting port MB TX OUT, an auxiliary receiving port LNA IN6, and the second combiner 82, respectively. 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.

In the first radio frequency transceiving system provided by the embodiment of the application, on one hand, because the multi-mode multi-frequency power amplifier is integrated in the first 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, an rf transceiving system is further provided in the embodiments of the present application. As shown in fig. 5-6, 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, an external circuit 10, a plurality of filters, a plurality of switch modules, and a plurality of combiners.

The antenna group comprises a first antenna ANT1, a second antenna ANT2, a third antenna ANT3 and a fourth antenna ANT4. 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 frequency band and a 5G NR frequency 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 is configured to support transceiving processing of radio frequency signals of multiple intermediate frequency bands and support a non-independent networking mode, and at least support transceiving processing of a first intermediate frequency band signal, transceiving processing of a second intermediate frequency band signal, and master set MIMO receiving processing of the second intermediate frequency band signal. The radio frequency LB L-PA Mid device 50 may be the first radio frequency MHB L-PA Mid device in any one of the embodiments of fig. 1 to 4. Illustratively, the frequency bands of the plurality of intermediate frequency band signals may include at least B1, B3, B25, B34, B66, B39, N1 and N3 frequency bands, wherein the preset first intermediate frequency band may include, but is not limited to, a frequency band such as B3 or B1, and the preset second intermediate frequency band may include, but is not limited to, a frequency band such as N1 or N3.

The LFEM device 60 is configured with at least a medium-high frequency antenna port MHB ANT, two auxiliary receiving ports LNA AUX IN, at least three medium-high frequency receiving ports LNA OUT MHB, and corresponding receiving circuits and switching circuits, and is at least configured to support diversity reception processing of a first medium-frequency band signal, diversity reception processing of a second medium-frequency band signal, and diversity MIMO reception processing of a second medium-frequency band signal. It should be noted that the specific implementation of the LFEM device 60 is not intended to limit the scope of the present application.

The first rf transceiving system shown in fig. 6 further includes an rf front-end device for supporting transceiving processing of a plurality of low-frequency band rf signals, as shown in fig. 6, 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 scope of the present application.

Fig. 6 is a schematic structural diagram of a second embodiment of a first rf transceiving system in an embodiment of the present application, and based on the rf transceiving system shown in fig. 6 and combined with fig. 4 and 5, a working principle of B3+ N1EN-DC is analyzed as follows, taking the preset first intermediate frequency band as a B3 frequency band and the preset second intermediate frequency band as an N1 frequency band as an example.

B3 The TX link: a transmission signal (B3 TX 1) of the first intermediate frequency band signal is output from the TX1 MB port of the radio frequency transceiver 40, and is transmitted to the first intermediate frequency transmission port MB RFIN1 port (denoted as 4G MB RFIN1 in fig. 6) of the radio frequency MHB L-PA Mid device 50 through a radio frequency line; after the signal is amplified by a first intermediate frequency power amplifier 111 (indicated as MB 4G PA1 in fig. 6), the signal is output to an intermediate frequency auxiliary transmitting port MB TX OUT port; via Path11 to external circuit 10, i.e. B3 Duplexer1 in fig. 6; the B3 Duplexer duplex 1 filters the B3 TX1, and then the filtered B3 TX1 passes through Path05 and reaches a second combiner 82; after being combined by the second combiner 82, B3 TX1 transmits from the second antenna ANT2 via the Path03 Path.

B3 PRX link: a receiving signal (B3 RX 1) of the first intermediate frequency signal enters from the second antenna ANT2, passes through a Path03, and reaches the second combiner 82; after being combined, the second combiner 82 passes through Path05 to the external circuit 10, i.e., the B3 Duplexer1 in fig. 6; b3 Duplexer1 filters B3 RX1 to auxiliary receiving port LNA IN6 (denoted as LMHB LNA IN2 IN fig. 6) of MHB PA Mid device 50; amplified by a low noise amplifier 143, such as LNA6 in fig. 6, and then switched to a fourth switching unit 144, such as 6P6T switch in fig. 6; 6P6T is switched to contact 6 and output from the receive port LNA OUT 6; b3 RX1 enters the rf transceiver 40 via the SDR PRX3 port.

B3 DRX (discontinuous reception) link: a diversity reception 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; after being combined by the fourth combiner 84, the combined signal passes through Path10 to the third filter 73; b3 The 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. 6) of the LFEM device 60; the SP3T #3 switch inside the LFEM device 60 switches the single port to the low noise amplifier LNA3 path inside the LFEM device 60; amplified by a low noise amplifier LNA3 and then switched to a 6P6T switch inside 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; b3 DRX enters the rf transceiver 40 via the SDR DRX0 port.

N1 TX link: the transmission signal (N1 TX) of the second intermediate frequency 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. 6) of the radio frequency MHB L-PA Mid device 50; after the signal is amplified by the second intermediate frequency power amplifier 121 (indicated as MB 4g PA2 in fig. 6), the signal is switched to the second switching unit 122 as the 3P5T switch in fig. 6; the 3P5T switch is switched to the contact 4, filtered by the N1 TX Filter, and then sent to the first switch unit 131 (for example, the DP7T switch in fig. 6); the DP7T switch is switched to a contact 1 and outputs from a first antenna port ANT1; via Path02 to the first combiner 81; after being combined by the first combiner 81, N1 TX is transmitted from the first antenna ANT1 through the Path 01.

N1PRX 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 antenna goes through a Path02 to a first antenna port ANT1 of the MHB PA Mid device 50; the first switch unit 131 (e.g., the DP7T switch in fig. 6) switches to the contact 4, and after N1 RX filtering, to a third switch unit 142 (e.g., the SP3T #1 switch in fig. 6) of the first receiving circuit 140; the SP3T #1 switch switches the single port to a low noise amplifier 143 (e.g., LNA1 in the rf MHB L-PA Mid device 50 in fig. 6) path; amplified by the low noise amplifier LNA1, and then sent to the fourth switching unit 144 (e.g. 6P6T switch in fig. 6); the 6P6T switch switches to contact 1 to a receiving port LNA OUT (e.g., LNA OUT1 in fig. 6) output; n1PRX enters the rf transceiver 40 through the SDR PRX0 port.

N1 DRX link: a diversity reception signal (N1 DRX) of the second mid-band signal enters from the third antenna ANT3, passes through a Path06, and reaches the 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 Path07 Path; the SP8T switch inside the LFEM device 60 is switched to contact 5, filtered by N1 RX, to the SPDT switch inside the LFEM device 60; the single port is switched by the SPDT switch in the LFEM device 60 to the low noise amplifier LNA4 in the LFEM device 60; amplified by a low noise amplifier LNA4, and switched to a low noise amplifier 6P6T inside the LFEM device 60; the 6P6T switch is switched to the contact 2 and outputs to the middle-high frequency receiving port LNA OUT MHB2 port; the N1 DRX enters the rf transceiver device 40 via the SDR DRX2 port.

N1PRX MIMO link: a dominant 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 signal is transmitted to the first filter 71 through a Path 04; the N1PRX MIMO is filtered by the first filter 71 and then goes to an auxiliary receiving port LNA IN5 (shown as LMHB LNA IN1 IN fig. 6) of the MHB PA Mid device 50; amplified by a low noise amplifier 143 (such as LNA5 shown in fig. 6), and then sent to a fourth switching unit 144 (such as 6P6T switch in fig. 6); the 6P6T switch is switched to contact 5 and outputs from a receiving port LNA OUT (such as LNA OUT5 in fig. 6); the N1PRX MIMO enters the RF transceiver 40 through the SDR PRX1 port.

N1 DRX MIMO link: a diversity MIMO receiving 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 goes to the second filter 72 through a Path 09; the N1 DRX MIMO is filtered by the second filter 72 and then sent to an auxiliary receiving port LNA AUX IN (denoted as LNA AUX LMB IN fig. 6) of the LFEM device 60; the SP3T #5 switch inside the LFEM device 60 switches the single port to the low noise amplifier LNA6 path inside the LFEM device 60; amplified by a low noise amplifier LNA6 and then transmitted to a 6P6T switch inside the LFEM device 60; the 6P6T switch is switched to the contact 4 and is 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.

By combining the working principle analysis of the B3+ N1EN-DC, 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, and takes a B3+ N1EN-DC combination as an example, B3 has two paths of receiving of PRX and DRX, and N1 has four paths of receiving 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 and transmission control 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 also realizes transmitting and receiving channels of multiple frequency bands, and comprises B1/N1, B3/N3, B66, B25, B34, B39, B7, B40, B41, 2G HB GSM, 3 auxiliary transceiving ports TRX and 6 auxiliary receiving ports LNA 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. 7 is a schematic structural diagram of a first embodiment of a second rf front-end device IN an embodiment of the present application, which is used for a main set antenna rf link, and as shown IN fig. 7, the second rf front-end device is at least provided with a first if transmitting port MB RFIN1, at least one receiving port LNA OUT, at least one auxiliary receiving port LNA IN, an if auxiliary receiving port MB INOUT, and an if auxiliary receiving port MB RX; the intermediate frequency auxiliary receiving port MB RX is connected with an auxiliary receiving port LNA IN through a radio frequency line; the radio frequency front end device at least comprises:

a first transmitting circuit 110, connected to the first if transmitting port MB RFIN1 and the switching circuit 150, for amplifying the first if signal from the first if transmitting port MB RFIN1 and outputting the amplified first if signal from the if auxiliary transceiving port MB INOUT through the switching circuit 150;

a switching circuit 150, connected to the first transmitter circuit 110, the intermediate frequency auxiliary transceiver port MB INOUT, and the intermediate frequency auxiliary receiver port MB RX, for separating the transceiver paths according to the transceiver signal direction of the first intermediate frequency band signal to implement single-antenna bidirectional communication;

a first receiving circuit 140, connected to the receiving port LNA OUT and the auxiliary receiving port LNA IN, for amplifying a first intermediate frequency signal received through the intermediate frequency auxiliary receiving/transmitting port MB INOUT from the auxiliary receiving port LNA IN connected to the intermediate frequency auxiliary receiving port MB RX and outputting the amplified first intermediate frequency signal to the receiving port LNA OUT;

In an exemplary example, the second rf front-end device is further provided with a second if transmit port MB RFIN2 and a first antenna port ANT1; the second rf front-end device shown in fig. 7 further includes:

the first receiving circuit 140 is further connected to the second transmitting circuit 120, and further configured to amplify at least a second intermediate frequency band signal of the multiple intermediate frequency band signals from the radio frequency path and output the amplified signal to a receiving port LNA OUT, and amplify a main MIMO signal of the second intermediate frequency band signal from another auxiliary receiving port and output the amplified signal to a receiving port;

In one illustrative example, the switching circuit 150 may be a first mid-band Duplexer, the preset first intermediate frequency range is a frequency range where the first intermediate frequency range signal is located. The first intermediate frequency band duplexer is a three-port radio frequency device, and is used for separating a receiving and transmitting path according to the receiving and transmitting signal direction of a first intermediate frequency band signal, i.e. dividing the receiving and transmitting signal of an antenna into two different signal paths according to the direction of the receiving and transmitting 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-frequency band duplexer is connected to the intermediate-frequency auxiliary receiving port MB RX, and is configured to output a first intermediate-frequency band signal received through the common port of the preset first intermediate-frequency 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.

The embodiment shown in fig. 7 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 include 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 and a preset first intermediate frequency band and a preset second intermediate frequency band. In one embodiment, the preset first midrange may include, but is not limited to, one of the following: b3, B1, etc., and accordingly, the preset 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 and the like.

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. 7 may be understood as a package structure, and as shown IN fig. 7, the second rf front-end device is provided with a first if transmitting port MB RFIN1 and a second if transmitting port MB RFIN2 for connecting to an rf transceiver, at least two receiving ports LNA OUT, a first antenna port ANT1 for connecting to an antenna, an if auxiliary transmitting/receiving port MB INOUT, and an if auxiliary receiving port MB RX and at least one auxiliary receiving port LNA IN. The receiving port LNA OUT, the first intermediate frequency transmitting port MB RFIN1, the second intermediate frequency transmitting port MB RFIN2, the first antenna port ANT1, the intermediate frequency auxiliary transceiving port MB INOUT, the intermediate frequency auxiliary receiving port MB RX, and the auxiliary receiving port LNA IN may be understood as radio frequency pin terminals of a radio frequency front end device, and are used for being connected with external devices. In one embodiment, the receive port LNA OUT, the first intermediate frequency transmit port MB RFIN1 and the second intermediate frequency transmit port MB RFIN2 may be used for connection with a radio frequency transceiver; the first antenna port ANT1 may be configured to be connected to an antenna, and may output a plurality of intermediate frequency signals including a second intermediate frequency signal, which are processed by the second rf front-end device, to the antenna, and may also transmit a plurality of intermediate frequency signals including the second intermediate frequency signal, which are received by the antenna, to the second rf front-end device; the intermediate frequency auxiliary receiving/transmitting port MB INOUT may be configured to be connected to another antenna, and configured to output the first intermediate frequency signal processed by the second rf front-end device to the antenna, and also may receive the first intermediate frequency signal received by the antenna and transmit the first intermediate frequency signal to the second rf front-end device through the auxiliary receiving port LNA IN connected to the intermediate frequency auxiliary receiving port MB RX, so as to implement transmission and reception of the first intermediate frequency signal.

In an illustrative example, as shown in fig. 7, the second rf front-end device may include: a first transmitting circuit 110, a switching circuit 150, a second transmitting circuit 120, a first receiving circuit 140, and a first switching circuit 130.

In an exemplary example, as shown in fig. 7, an input terminal of the first transmitting circuit 110 is connected to a first intermediate frequency transmitting port MB RFIN1, and performs amplification processing on a first intermediate frequency signal received by the first intermediate frequency transmitting port MB RFIN 1; the output end of the first transmitting circuit 110 is connected to an output port of the switching circuit 150, a common port of the switching circuit 150 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 150. 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 midrange 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 150, the intermediate frequency auxiliary transceiving port MB INOUT and the antenna form a transmitting path together.

In an exemplary example, as shown in fig. 7, the implementation of the second transmitting circuit 120 and the first receiving circuit 140 can refer to the related description in fig. 1, and is not described herein again.

The second radio frequency front-end device shown in fig. 7 is used for a main 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 the radio frequency device is improved, the cost is reduced, after the 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 the performance of communication equipment are improved.

Fig. 8 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. 9 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 second rf front-end device 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 183 in the embodiment shown in fig. 9 is disposed in the rf path between the switching circuit 150 and the intermediate frequency auxiliary transceiver port MB INOUT.

The second rf front-end device provided in the embodiments of the present application may also be an rf L-PA Mid device. The radio frequency L-PA Mid device 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 a plurality of intermediate frequency signals and switching control between transmitting and receiving, realize receiving switching control and transmitting switching control among a 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. Therefore, the radio frequency L-PA Mid device in the embodiment of the present application may also be referred to as MHB L-PA Mid.

Fig. 10 is a schematic structural diagram of an embodiment of a second radio frequency MHB L-PA Mid device IN the embodiment of the present application, and as shown IN fig. 10, the second radio frequency MHB L-PA Mid device is provided with a first intermediate frequency transmit port MB RFIN1, a second intermediate frequency transmit port MB RFIN2, at least two receive ports LNA OUT for connecting to a radio frequency transceiver, a first antenna port ANT1, an intermediate frequency auxiliary transmit/receive port MB INOUT, an intermediate frequency auxiliary receive port MB RX and at least one auxiliary receive port LNA IN for connecting to an antenna. The receiving port LNA OUT, the first intermediate frequency transmitting port MB RFIN1, the second intermediate frequency transmitting port MB RFIN2, the intermediate frequency auxiliary transceiving port MB INOUT, the intermediate frequency auxiliary receiving port MB RX, the first antenna port ANT1, and the auxiliary receiving port LNA IN may be understood as radio frequency pin terminals of the second radio frequency LB L-PA Mid device, and are used to connect with external devices. In one embodiment, the receiving port LNA OUT, the first intermediate frequency transmitting port MB RFIN1, the second intermediate frequency transmitting port MB RFIN2 may be used for connection with a radio frequency transceiver; the first antenna port ANT1 may be configured to be connected to an antenna, and may output, to the antenna, a plurality of intermediate frequency band signals that are processed by the second radio frequency MHB L-PA Mid device and include the second intermediate frequency band signal, and may also transmit, to the second radio frequency MHB L-PA Mid device, a plurality of intermediate frequency band signals that are received by the antenna and include the second intermediate frequency band signal; the intermediate frequency auxiliary receiving and transmitting port MB INOUT may be configured to be connected to another antenna, and configured to output the first intermediate frequency band signal processed by the second radio frequency MHB L-PA Mid device to the antenna, and may also transmit the first intermediate frequency band signal received by the antenna to the second radio frequency MHB L-PA Mid device through an auxiliary receiving port LNA IN connected to the intermediate frequency auxiliary receiving port MB RX, so as to implement separate receiving and transmitting of the first intermediate frequency band signal.

In an illustrative example, as shown in fig. 10, the first transmitting circuit 110 may include: an input end of the first intermediate frequency power amplifier 111 is connected to the first intermediate frequency transmit port MB RFIN1, and an output end of the first intermediate frequency power amplifier 111 is connected to the switching circuit 150, and configured to perform power amplification processing on the first intermediate frequency signal received through the first intermediate frequency transmit port MB RFIN 1. In one embodiment, the first mid-band signal may comprise signals in the B3 or B1 band. In an exemplary embodiment, as shown in fig. 10, the switching circuit 150 may include at least a first intermediate band duplexer 151, a common port of the first intermediate band duplexer 151 is connected to the intermediate frequency auxiliary transceiving port MB INOUT, and the amplified first intermediate band signal passes through the first intermediate band duplexer 151 from the intermediate frequency auxiliary transceiving port MB INOUT. In one embodiment, the first transmit path may include: a first intermediate frequency transmitting port MB RFIN1, a first intermediate frequency power amplifier 111, a first intermediate frequency duplexer 151, an intermediate frequency auxiliary transceiving port MB INOUT and an antenna jointly form a transmitting path.

In an exemplary embodiment, as shown in fig. 10, the second radio frequency MHB L-PA Mid device is further provided with a second antenna port ANT2 connected to a first port of the first switch circuit 130. For the implementation of the second transmitting circuit 120 and the first receiving circuit 140, reference may be made to the related description in fig. 4, which is not described herein again. IN contrast to the embodiment shown IN fig. 4, a low noise amplifier 143 (e.g., low noise amplifier LNA6 IN the embodiment shown IN fig. 10) has its input connected to an auxiliary receive port LNA IN (e.g., auxiliary receive port LNA IN6 IN the embodiment shown IN fig. 4) connected to the intermediate frequency auxiliary receive port MB RX. In one embodiment, the receive path may include: a reception path formed by the first antenna port ANT1 or the second antenna port ANT1, the first switch circuit 130, the third switch unit 142 or the fifth switch unit 141, the low noise amplifier 143, the fourth switch unit 144, and any one of the reception ports LNA OUT, another reception path formed by the intermediate frequency auxiliary reception port MB RX, the auxiliary reception port LNA IN, the low noise amplifier 143, the fourth switch unit 144, and any one of the reception ports LNA OUT, and yet another reception path formed by other external circuits (not shown IN the figure), the third switch unit 142, the low noise amplifier 143, the fourth switch unit 144, and any one of the reception ports LNA OUT.

In an exemplary example, as shown in fig. 10, the implementation of the first switch circuit 130, the third transmitting circuit 160, and the second switch circuit 170 may refer to the related description in fig. 4, and will not be described herein again.

In an exemplary embodiment, the second radio frequency MHB L-PA Mid device is further provided with a second coupling output port CPLOUT2, and the radio frequency MHB L-PA Mid device further includes a coupling circuit 183, which is disposed in a radio frequency path between the first intermediate frequency power amplifier 111 and the intermediate frequency auxiliary transceiving port MB INOUT, for coupling the intermediate frequency band signal in the radio frequency path to output the coupled signal via the coupling output port CPLOUT 2. In an exemplary example, the radio frequency MHB L-PA Mid device is further provided with a coupling output port CPLOUT1, and the radio frequency MHB L-PA Mid device further includes a first coupling unit 181, a second coupling unit 182, and a coupling switch 184. For specific implementation, reference may be made to the description related to the first radio frequency MHB L-PA Mid device, and details are not described here.

In an illustrative example, the second radio frequency MHB L-PA Mid device may further include: a first controller 191 and a second controller 192. The first controller 191 is connected to each switch unit and each power amplifier in the radio frequency MHB L-PA Mid device, respectively, and is configured to control on/off of each switch unit and control a working state of each power amplifier. A second controller 192 may be coupled to each of the low noise amplifiers for adjusting the gain factor of each of the low noise amplifiers. For specific implementation, reference may be made to the related description of the first radio frequency MHB L-PA Mid device, and details are not described here.

Based on the trend of miniaturization development of a main board of a terminal device, the embodiment of the application provides a second radio frequency MHB L-PA Mid device, and the composition of the second radio frequency MHB L-PA Mid device is shown in fig. 10. The whole chip integrates multi-band transmitting and receiving channels, including B1/N1, B3/N3, B66, B25, B34, B39, B7, B40, B41 and 2G HB GSM, as well as 3 auxiliary receiving and transmitting ports TRX and 6 auxiliary receiving ports LNA IN for external band extension.

Based on the second radio frequency MHB L-PA Mid device as shown in fig. 10, a non-independent networking mode may be supported. For example, the illustration is made by taking an EN-DC combination of B3+ N1 as an N1 band, where a dual connection of 4G and 5G is implemented, and the first intermediate band may be, for example, a B3 band, and the second intermediate band may be, for example, a B3+ N1 band.

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

the first intermediate frequency transmission port MB RFIN1 → the first intermediate frequency power amplifier 111 → the first intermediate band duplexer 151 → the intermediate frequency auxiliary transceiving port MB INOUT → the antenna.

The receiving path of the B3 band is as follows:

antenna → intermediate frequency auxiliary transmit/receive port MB INOUT → first intermediate band duplexer 151 → intermediate frequency auxiliary receive port MB RX → auxiliary receive port LNA IN6 → low noise amplifier LNA6 → contact 6 of fourth switch unit 144 → receive port LNA OUT6 → radio frequency transceiver.

The transmission path of the N1 frequency band is as follows:

The receiving path of the N1 frequency band is as follows:

The second radio frequency MHB L-PA Mid 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 second radio frequency MHB L-PA Mid device and the low frequency front end module (LFEM) device provided in the embodiment of the present application. The LFEM device in the embodiments of the present application includes at least: the antenna comprises a medium-high frequency antenna port MHB ANT, two auxiliary receiving ports LNA AUX IN, at least three medium-high frequency receiving ports LNA OUT MHB, corresponding receiving circuits and switch circuits, and a diversity receiving processing of a plurality of medium-frequency signals is at least supported. It should be noted that the specific implementation of the LFEM device 60 is not intended to limit the scope of the present application.

Fig. 11 is a schematic structural diagram of a first embodiment of a second rf transceiver system in an embodiment of the present application, and as shown in fig. 5, the second rf transceiver system at least includes: a first antenna ANT1, a second antenna ANT2, a third antenna ANT1, a fourth antenna ANT4, a radio frequency transceiver 40, a second radio frequency front end device (such as the second radio frequency MHB L-PA Mid device 50) and the LFEM device 60 in any of the embodiments of fig. 7 to 10, a second combiner 82, a fourth combiner 84, a first filter 71, a second filter 72, and a third filter 73. Wherein,

the radio frequency transceiver 40 is connected with a second antenna ANT2 through a radio frequency MHB L-PA Mid device 50, a first filter 71 and a second combiner 82 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 40 is connected with a fourth antenna ANT4 through the LFEM device 60, the second filter 72, the third filter 73 and the fourth combiner 84 to form a diversity reception channel of the first intermediate frequency band signal and a diversity MIMO reception channel of the second intermediate frequency band signal;

In one embodiment, the first antenna ANT1 may be used for transmitting and receiving the main set of the second middle frequency 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 and receive a primary set of first intermediate frequency signals and receive a primary 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 primary set MIMO of the second intermediate frequency signals, another first port of the second combiner 82 is connected to an intermediate frequency auxiliary receiving and transmitting port MB INOUT of the radio frequency MHB L-PA Mid device 50, and is configured to transmit and receive the first intermediate frequency signals, and an intermediate frequency auxiliary receiving port MB RX of the radio frequency MHB L-PA Mid device 50 is connected to an auxiliary receiving port LNA IN6, and is configured to receive the primary set of the 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 the first intermediate frequency band signal and diversity MIMO reception of the second intermediate frequency band 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 receive the second intermediate frequency band 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 receive the first intermediate frequency band signal IN a diversity manner. It should be noted that the ports in the embodiment are only an example, and are not used to limit the scope of the present application.

On one hand, the second radio frequency transceiving system provided by the embodiment of the application integrates the multimode multi-frequency power amplifier and the first intermediate frequency band duplexer in the second radio frequency front-end device, so that a non-independent networking mode can be supported without externally hanging the multimode multi-frequency power amplifier device and the preset frequency band duplexer, and the occupied area of a PCB (printed circuit board) 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. 11-12, 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.

The radio frequency MHB L-PA Mid device 50 is configured to support transceiving processing of radio frequency signals of multiple intermediate frequency bands and support a non-independent networking mode, and at least support transceiving processing of a first intermediate frequency band signal, transceiving processing of a second intermediate frequency band signal, and master set MIMO receiving processing of the second intermediate frequency band signal. The radio frequency LB L-PA Mid device 50 may be the second radio frequency MHB L-PA Mid device in any one of the embodiments of fig. 7 to 10. Illustratively, the frequency bands of the plurality of intermediate frequency band signals may include at least B1, B3, B25, B34, B66, B39, N1 and N3 frequency bands, wherein the preset first intermediate frequency band may include, but is not limited to, a frequency band such as B3 or B1, and the preset second intermediate frequency band may include, but is not limited to, a frequency band such as N1 or N3.

Fig. 12 shows that the second rf transceiver system further includes an rf front-end device for supporting transceiving processing of a plurality of low-band rf signals, and as shown in fig. 12, the second 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.

Fig. 12 is a schematic structural diagram of a second embodiment of a second rf transceiving system in an embodiment of the present application, and based on the rf transceiving system shown in fig. 12 and combined with fig. 10 and 11, a working principle of B3+ N1EN-DC is analyzed as follows, taking the preset first intermediate frequency band as a B3 frequency band and the preset second intermediate frequency band as an N1 frequency band as an example.

B3 The TX link: a transmission signal (B3 TX 1) of the first intermediate frequency signal is output from the TX1 MB port of the radio frequency transceiver 40, and is transmitted to the first intermediate frequency transmission port MB RFIN1 port (denoted as 4g MB RFIN1 in fig. 12) of the radio frequency MHB L-PA Mid device 50 through the radio frequency line; after the signal is amplified by a first intermediate frequency power amplifier 111 (shown as MB 4GPA1 in fig. 12), the signal is filtered by a B3 TX Filter by a B3 Duplexer1, and then is output to an intermediate frequency auxiliary transceiving port MB INOUT; via Path05, to the second combiner 82; after being combined by the second combiner 82, B3 TX1 transmits from the second antenna ANT2 via the Path03 Path.

B3 The PRX link: a receiving signal (B3 RX 1) of the first intermediate frequency 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 intermediate frequency signal is transmitted to the intermediate frequency auxiliary receiving/transmitting port MB INOUT of the radio frequency MHB L-PA Mid device 50 through Path05, and after being filtered by the B3 Duplexer duplex 1 to B3 RX1, the intermediate frequency auxiliary receiving port MB RX of the radio frequency MHB L-PA Mid device 50 is transmitted to the auxiliary receiving port LNA IN6 (shown as LMHB LNA IN2 IN fig. 12) of the MHB PA Mid device 50 through Path 11; amplified by a low noise amplifier 143, such as LNA6 in fig. 12, and then switched by a fourth switching unit 144, such as 6P6T in fig. 12; 6P6T is switched to contact 6 and output from the receive port LNA OUT 6; b3 RX1 enters the rf transceiver 40 via the SDR PRX3 port.

B3 DRX (discontinuous reception) link: a diversity reception 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; after being combined by the fourth combiner 84, the combined signal passes through Path10 to the third filter 73; b3 The 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. 12) of the LFEM device 60; the SP3T #3 switch inside the LFEM device 60 switches a single port to the low noise amplifier LNA3 path inside the LFEM device 60; amplified by a low noise amplifier LNA3 and then switched to a 6P6T switch inside 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; b3 DRX enters the rf transceiver 40 via the SDR DRX0 port.

N1 TX link: the transmission signal (N1 TX) of the second intermediate frequency 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. 12) of the radio frequency MHB L-PA Mid device 50; after the signal is amplified by the second intermediate frequency power amplifier 121 (indicated as MB 4g PA2 in fig. 12), the signal is switched to the second switching unit 122 as the 3P5T switch in fig. 12; the 3P5T switch is switched to the contact 4, filtered by the N1 TX Filter, and then sent to the first switch unit 131 (for example, the DP7T switch in fig. 12); the DP7T switch is switched to the contact 1 and outputs from a first antenna port ANT1; via Path02 to the first combiner 81; after being combined by the first combiner 81, N1 TX is transmitted from the first antenna ANT1 through the Path 01.

N1PRX 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 antenna goes through a Path02 to a first antenna port ANT1 of the MHB PA Mid device 50; the first switch unit 131 (e.g., the DP7T switch in fig. 12) switches to the contact 4, and after N1 RX filtering, to a third switch unit 142 (e.g., the SP3T #1 switch in fig. 12) of the first receiving circuit 140; the SP3T #1 switch switches the single port to a low noise amplifier 143 (e.g., LNA1 in the rf MHB L-PA Mid device 50 in fig. 12) path; amplified by the low noise amplifier LNA1, and then sent to the fourth switching unit 144 (e.g. 6P6T switch in fig. 12); the 6P6T switch switches to contact 1 to a receive port LNA OUT (e.g., LNA OUT1 in fig. 12) output; n1PRX enters the rf transceiver 40 through the SDR PRX0 port.

N1 DRX link: a diversity reception signal (N1 DRX) of the second mid-band signal enters from the third antenna ANT3, passes through a Path06, and reaches the 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 Path07 Path; the SP8T switch inside the LFEM device 60 is switched to the contact 5, filtered by the N1 RX, to the SPDT switch inside the LFEM device 60; the single port is switched by the SPDT switch in the LFEM device 60 to the low noise amplifier LNA4 in the LFEM device 60; amplified by a low noise amplifier LNA4, and switched to a low noise amplifier 6P6T inside the LFEM device 60; the 6P6T switch is switched to the contact 2 and outputs to the middle-high frequency receiving port LNA OUT MHB2 port; the N1 DRX enters the rf transceiver device 40 via the SDR DRX2 port.

N1PRX MIMO link: a master 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 signal is transmitted to the first filter 71 through a Path 04; the N1PRX MIMO is filtered by the first filter 71 and then goes to an auxiliary receiving port LNA IN5 (shown as LMHB LNA IN1 IN fig. 6) of the MHB PA Mid device 50; amplified by a low noise amplifier 143 (such as LNA5 shown in fig. 12), and then sent to a fourth switching unit 144 (such as 6P6T switch in fig. 12); the 6P6T switch switches to contact 5, outputting from a receive port LNA OUT (such as LNA OUT5 in fig. 12); the N1PRX MIMO enters the RF transceiver 40 through the SDR PRX1 port.

N1 DRX MIMO link: a diversity MIMO receiving 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, the fourth combiner 84 passes through a Path09 to the second filter 72; the N1 DRX MIMO is filtered by the second filter 72 and then sent to an auxiliary receiving port LNA AUX IN (denoted as LNA AUX LMB IN fig. 6) of the LFEM device 60; the SP3T #5 switch inside the LFEM device 60 switches the single port to the low noise amplifier LNA6 path inside the LFEM device 60; amplified by a low noise amplifier LNA6, and then switched to a 6P6T switch inside the LFEM device 60; the 6P6T switch is switched to the contact 4 and is 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.

By combining the B3+ N1EN-DC working principle analysis, the frequency band configuration of each antenna port is shown in table 1.

The second radio frequency transceiving system in the embodiment of the application supports a non-independent networking mode, and takes a B3+ N1EN-DC combination as an example, B3 has two paths of receiving of PRX and DRX, and N1 has four paths of receiving of PRX, DRX, PRX MIMO and DRX MIMO; in addition, in the embodiment of the application, the external multi-mode multi-frequency power amplifier device and the preset frequency band 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 also realizes transmitting and receiving channels of multiple frequency bands, and comprises B1/N1, B3/N3, B66, B25, B34, B39, B7, B40, B41, 2G HB GSM, 3 auxiliary transceiving ports TRX and 6 auxiliary receiving ports LNA 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 integration of the plug-in multi-mode multi-frequency power amplifier and the preset frequency band duplexer in 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 and transmission control 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 wiring of the device, an additional auxiliary receiving port is not needed, and the complexity of external layout wiring of the radio frequency front-end device is further reduced.

Fig. 13 is a schematic structural diagram of a first embodiment of a third rf front-end device in an embodiment of the present application, which is used for a main set antenna rf link, and as shown in fig. 13, the third rf front-end device is at least provided with a first if transmitting port MB RFIN1, at least one receiving port LNA OUT, and an if auxiliary transceiving port MB INOUT; the radio frequency front end device at least comprises:

a switching circuit 150, connected to the first transmitting circuit 110, the intermediate frequency auxiliary transceiving port MB INOUT, and the first receiving circuit 140, for separating transceiving paths according to a transceiving signal direction of the first intermediate frequency band signal to implement single-antenna bidirectional communication;

the first receiving circuit 140 is connected to the receiving port LNA OUT and the switching circuit 150, and configured to amplify a first intermediate-frequency signal received through the intermediate-frequency auxiliary transceiving port MB INOUT of the switching circuit 150 and output the first intermediate-frequency signal to the receiving port LNA OUT;

IN an exemplary example, the third rf front-end device is further provided with a second if transmit port MB RFIN2, a first antenna port ANT1, at least one auxiliary receive port LAN IN; the third rf front-end device shown in fig. 13 further includes:

a first switch circuit 130, a plurality of second ports of the first switch circuit 130 are respectively connected to the second transmitting circuit 120 and the first receiving circuit 140, and a first port of the first switch circuit 130 is connected to the first antenna port ANT1, for selectively turning on radio frequency paths between the first antenna port ANT1 and the first receiving circuit 140 and the second transmitting circuit 120;

a first receiving circuit 140, further connected to the second transmitting circuit 120, further configured to amplify at least a second intermediate frequency band signal of the plurality of intermediate frequency band signals from the rf path and output the amplified signal to another receiving port LNA OUT, and amplify a main MIMO signal of the second intermediate frequency band signal from an auxiliary receiving port LNA IN and output the amplified signal to a receiving port LNA OUT;

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

In an exemplary embodiment, the switching circuit 150 may be a first intermediate band duplexer, which is a three-port rf device, and is configured to separate the transceiving paths according to the transceiving signal direction of the first intermediate band signal, i.e., to divide the transceiving signal of the antenna into two different signal paths according to the direction thereof, so as to implement single-antenna bidirectional 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 an input port of the first receiving circuit 140, 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.

The third rf front-end device provided in the embodiment shown in fig. 13 of the present application is used for a main set antenna rf link, and supports receiving and transmitting of multiple mid-band signals in different frequency bands and supports a non-independent networking mode. The plurality of mid-band signals may include 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 and 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 preset second intermediate frequency band may include, but is not limited to, one of the following: n1, N3 and the like. 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 and the like. In an embodiment, the preset first intermediate frequency band may be a B3 frequency band, and correspondingly, the preset second intermediate frequency band may be an N41 frequency band.

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

The third rf front-end device shown in fig. 13 may be understood as a package structure, and as shown in fig. 13, the rf front-end device is provided with at least a first if transmitting port MB RFIN1 and a second if transmitting port MB RFIN2 for connecting to an rf transceiver, at least two receiving ports LNA OUT, a first antenna port ANT1 for connecting to an antenna, and an if auxiliary transceiving port MB INOUT. The receiving port LNA OUT, the first intermediate frequency transmitting port MB RFIN1, the second intermediate frequency transmitting port MB RFIN2, the first antenna port ANT1, and the intermediate frequency auxiliary transceiving port MB INOUT may be understood as radio frequency pin terminals of a radio frequency front end device, and are used for being connected with external devices. In one embodiment, the receive port LNA OUT, the first intermediate frequency transmit port MB RFIN1 and the second intermediate frequency transmit port MB RFIN2 may be used for connection with a radio frequency transceiver; the first antenna port ANT1 may be configured to be connected to an antenna, and may output a plurality of intermediate frequency signals including a second intermediate frequency signal, which are processed by the radio frequency front-end device, to the antenna, and may also transmit each intermediate frequency signal including the second intermediate frequency signal, which is received by the antenna, to the radio frequency front-end device; the intermediate frequency auxiliary transceiving port MB INOUT may be configured to be connected to another antenna, and configured to output the first intermediate frequency signal processed by the radio frequency front end device to the antenna, and may also input the first intermediate frequency signal received by the antenna to the radio frequency front end device, so as to implement transmission and reception of the first intermediate frequency signal.

In an illustrative example, as shown in fig. 13, the third rf front end device may include: a first transmitting circuit 110, a switching circuit 150, a second transmitting circuit 120, a first receiving circuit 140, and a first switching circuit 130.

In an exemplary example, as shown in fig. 13, an input terminal of the first transmitting circuit 110 is connected to a first intermediate frequency transmitting port MB RFIN1, and performs amplification processing on a first intermediate frequency signal received by the first intermediate frequency transmitting port MB RFIN 1; the output end of the first transmitting circuit 110 is connected to an output port of the switching circuit 150, the common port of the switching circuit 150 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 150. The first transmit circuitry 110 may be provided with a transmit path to support transmission of the first mid-band signal. Illustratively, the first midrange signal may correspond to a frequency band including, for example, a B3 or B1 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 150, the intermediate frequency auxiliary transceiving port MB INOUT and the antenna form a transmitting path together.

In an exemplary embodiment, as shown in fig. 13, the implementation of the second transmitting circuit 120 can refer to the related description in fig. 1, and the description thereof is omitted here

In an exemplary example, as shown in fig. 13, the first receiving circuit 140 is connected to the first switching circuit 130, the second transmitting circuit 120, the switching circuit 150, and the receiving port LNA OUT, respectively. An output terminal of the first receiving circuit 140 is connected to the receiving port LNA OUT. The input terminals of the first receiving circuit 140 include: a plurality of input ports connected in one-to-one correspondence with the plurality of second ports of the first switch circuit 130, an input port connected to another output port of the switching circuit 150, and a plurality of input ports connected in one-to-one correspondence with the plurality of output ports of the second transmission circuit 120. The first receiving circuit 140 amplifies the radio frequency signals including the second intermediate frequency band signal from the plurality of input ports and the first intermediate frequency band signal from the and switching circuit 150 and outputs the amplified signals to the receiving port LNA OUT.

The first receiving circuit 140 in this embodiment supports reception control of any of the aforementioned intermediate frequency band signals. In one embodiment, the first receiving circuit 140 may be provided with a plurality of receiving paths to support the reception of a plurality of mid-band signals. In one embodiment, the receive path may include: a receiving path formed by the first antenna port ANT1, the first switch circuit 130, the first receiving circuit 140, and any receiving port LNA OUT, a receiving path formed by the first antenna port ANT1, the first switch circuit 130, the second transmitting circuit 120, the first receiving circuit 140, and any receiving port LNA OUT, and a receiving path formed by the intermediate frequency auxiliary receiving/transmitting port MB INOUT, the switching circuit 150, the first receiving circuit 120, and any receiving port LNA OUT. That is, a receiving path may be set for the if signal of each band to support receiving processing of multiple if signals.

The third rf front-end device shown in fig. 13 of the present application is used for 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 wiring lines after integration, and reducing the complexity of the single-board wiring layout, thereby improving the performance of the rf transceiver system and the communication device.

Fig. 14 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. 15 is a schematic structural diagram of a third embodiment of a third rf front-end device in this embodiment, and specific implementation of the third embodiment may refer to fig. 3, which is not described herein again, and is different from the embodiment shown in fig. 3 in that a coupling circuit 183 is disposed in an rf path between the switching circuit 150 and the intermediate frequency auxiliary transceiver port MB INOUT.

The third rf front-end device provided in the embodiments of the present application may also be an rf L-PA Mid device. The radio frequency L-PA Mid device 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 a plurality of intermediate frequency signals and switching control between transmitting and receiving, realize receiving switching control and transmitting switching control among a 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. Therefore, the radio frequency L-PA Mid device in the embodiment of the present application may also be referred to as MHB L-PA Mid.

Fig. 16 is a schematic structural diagram of an embodiment of a third radio frequency MHB L-PA Mid device in the embodiment of the present application, and as shown in fig. 16, the third radio frequency MHB L-PA Mid device is provided with a first intermediate frequency transmission port MB RFIN1 for connecting with a radio frequency transceiver, a second intermediate frequency transmission port MB RFIN2, at least two reception ports LNA OUT, a first antenna port ANT1 for connecting with an antenna, and an intermediate frequency auxiliary transceiving port MB INOUT. The receiving port LNA OUT, the first intermediate frequency transmitting port MB RFIN1, the second intermediate frequency transmitting port MB RFIN2, the intermediate frequency auxiliary transceiving port MB INOUT, and the first antenna port ANT1 may be understood as radio frequency pin terminals of a radio frequency LB L-PA Mid device, and are used for being connected with external devices. In one embodiment, the receive port LNA OUT, the first mid frequency transmit port MB RFIN1, the second mid frequency transmit port MB RFIN2 may be for connection with a radio frequency transceiver; the first antenna port ANT1 may be configured to be connected to an antenna, and may output, to the antenna, a plurality of intermediate frequency band signals that are processed by the radio frequency MHB L-PA Mid device and include the second intermediate frequency band signal, and may also transmit, to the radio frequency MHB L-PA Mid device, each intermediate frequency band signal that is received by the antenna and includes the second intermediate frequency band signal; the intermediate frequency auxiliary transceiving port MB INOUT may be configured to be connected to another antenna, and configured to output the first intermediate frequency band signal processed by the radio frequency LB L-PA Mid device to the antenna, and may also input the first intermediate frequency band signal received by the antenna to the radio frequency LB L-PA Mid device, so as to implement transmission and reception of the first intermediate frequency band signal.

In an illustrative example, as shown in fig. 16, the first transmission circuit 110 may include at least: an input end of the first if power amplifier 111 is connected to the first if transmit port MB RFIN1, and an output end of the first if power amplifier 111 is connected to an input port of the first if duplexer 151, and configured to perform power amplification processing on the first if signal received through the first if transmit port MB RFIN 1. In one embodiment, the first mid-band signal comprises a B3 or B1 band signal. In an illustrative example, as shown in fig. 16, the switching circuit 150 may include at least: and a common port of the first intermediate-frequency duplexer 151 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 first intermediate-frequency duplexer 151. In one embodiment, the first transmit path may include: a first intermediate frequency transmitting port MB RFIN1, a first intermediate frequency power amplifier 111, a first intermediate frequency duplexer 151, an intermediate frequency auxiliary transceiving port MB INOUT and an antenna.

In an exemplary embodiment, as shown in fig. 16, the third radio frequency MHB L-PA Mid device is further provided with a second antenna port ANT2 connected to a first port of the first switch circuit 130. For the implementation of the second transmitting circuit 120 and the first receiving circuit 140, reference may be made to the related description in fig. 4, which is not described herein again. In contrast to the embodiment shown in fig. 4, an input of a low noise amplifier 143 (e.g. the low noise amplifier LNA6 in the embodiment shown in fig. 16) is connected to the other input port of the first mid-band duplexer 151.

In one embodiment, the receive path may include: a receiving path formed by the first antenna port ANT1 or the second antenna port ANT1, the first switch circuit 130, the third switch unit 142 or the fifth switch unit 141, the low noise amplifier 143, the fourth switch unit 144, and any receiving port LNA OUT, another receiving path formed by the intermediate frequency auxiliary receiving port MB RX, the switch circuit 151 (e.g., the first intermediate frequency band duplexer 151 that presets the first intermediate frequency band), the low noise amplifier 143, the fourth switch unit 144, and any receiving port LNA OUT, and another receiving path formed by other external circuits (not shown), the third switch unit 142, the low noise amplifier 143, the fourth switch unit 144, and any receiving port LNA OUT.

In an exemplary example, as shown in fig. 16, the implementation of the first switch circuit 130, the third transmitting circuit 160, and the second switch circuit 170 may refer to the related description in fig. 4, and will not be described herein again.

In an exemplary example, the third radio frequency MHB L-PA Mid device is further provided with a coupling output port CPLOUT2, and the third radio frequency MHB L-PA Mid device further includes a coupling circuit 183, which is provided in a radio frequency path between the first intermediate frequency power amplifier 111 and the intermediate frequency auxiliary transceiving port MB INOUT, for coupling the intermediate frequency band signal in the radio frequency path to output the coupled signal via the coupling output port CPLOUT 2. In an illustrative example, the third radio frequency MHB L-PA Mid device is further provided with a coupling output port CPLOUT1, and the radio frequency MHB L-PA Mid device further includes a first coupling unit 181, a second coupling unit 182, and a coupling switch 184. For specific implementation, reference may be made to the description related to the first radio frequency MHB L-PA Mid device, and details are not described here. .

In an illustrative example, the third radio frequency MHB L-PA Mid device may further include: a first controller 191 and a second controller 192. The first controller 191 is connected to each switch unit and each power amplifier in the radio frequency MHB L-PA Mid device, respectively, and is configured to control on/off of each switch unit and control a working state of each power amplifier. A second controller 192 may be connected to each of the low noise amplifiers for adjusting the gain factor of each of the low noise amplifiers. For specific implementation, reference may be made to the description related to the first radio frequency MHB L-PA Mid device, and details are not described here.

Based on the trend of miniaturization development of a main board of a terminal device, the embodiment of the present application provides a third radio frequency MHB L-PA Mid device, and the composition of the third radio frequency MHB L-PA Mid device is shown in fig. 16. The whole chip integrates multi-band transmitting and receiving channels, including B1/N1, B3/N3, B66, B25, B34, B39, B7, B40, B41 and 2G HB GSM, as well as 3 auxiliary receiving and transmitting ports TRX and 6 auxiliary receiving ports LNA IN for external band extension.

Based on the third radio frequency MHB L-PA Mid device as shown in fig. 16, a non-independent networking mode can be supported. For example, the illustration is given by taking an EN-DC combination of B3+ N1 for implementing dual connection of 4G and 5G, where the first intermediate frequency band may be, for example, a B3 band, and the second intermediate frequency band may be, for example, an N1 band.

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

The receiving path of the B3 band is as follows:

antenna → intermediate frequency auxiliary transceiving port MB INOUT → first intermediate band duplexer 151 → low noise amplifier LNA6 → contact 6 of the fourth switching unit 144 → reception port LNA OUT6 → radio frequency transceiver.

The transmission path of the N1 frequency band is as follows:

the second intermediate frequency transmission port MB RFIN2 → the second intermediate frequency power amplifier 121 → the contact 1 of the second switch unit 122 → the contact 4 of the second switch unit 122 → the first filter unit 1131 → the contact 4 of the first switch unit 131 → the contact 1 of the first switch unit 131 → the first antenna port ANT1.

The receiving path of the N1 frequency band is as follows:

The third radio frequency MHB L-PA Mid 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 preset frequency band 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 wiring 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 radio frequency MHB L-PA Mid device and the LFEM provided in the embodiment of the present application. The LFEM device in the embodiments of the present application includes at least: the antenna device comprises a medium-high frequency antenna port MHB ANT, two auxiliary receiving ports LNA AUX IN, at least three medium-high frequency receiving ports LNA OUT MHB, corresponding receiving circuits and switch circuits, and is used for at least supporting diversity receiving processing of a plurality of medium-frequency signals. It should be noted that the specific implementation of the LFEM device 60 is not intended to limit the scope of the present application.

Fig. 17 is a schematic structural diagram of a first embodiment of a third rf transceiving system according to an embodiment of the present application, where as shown in fig. 17, the third rf transceiving system at least includes: the antenna system comprises a first antenna ANT1, a second antenna ANT2, a third antenna ANT1, a fourth antenna ANT4, a radio frequency transceiver 40, a third radio frequency front end device (such as a third radio frequency MHB L-PA Mid device 50) and an LFEM device 60 in any one of the embodiments of fig. 13 to 16, a second combiner 82, a fourth combiner 84, a first filter 71, a second filter 72 and a third filter 73. Wherein,

the radio frequency transceiver 40 is connected with a third antenna ANT3 through the LFEM device 60 to form a diversity reception channel of the intermediate frequency band signal at least including the second intermediate frequency band signal;

In one embodiment, the first antenna ANT1 may be used for transmitting and receiving the main set of the second middle frequency 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 and receive a first intermediate frequency signal, and receive a first intermediate frequency signal MIMO from 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 first intermediate frequency signal MIMO from the first 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 radio frequency MHB L-PA Mid device 50, and is configured to transmit and receive 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 band signal and diversity MIMO reception of a second intermediate frequency band 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 receive the second intermediate frequency band signal IN a diversity MIMO manner, 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 receive the first intermediate frequency band signal IN a diversity manner. 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 radio frequency front-end device is integrated with the multi-mode multi-frequency power amplifier and the first intermediate frequency band duplexer, a non-independent networking mode can be supported without a plug-in multi-mode multi-frequency power amplifier device and a preset frequency band 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 wiring layout is reduced, so that the performance of the radio frequency transceiving system is improved.

In an illustrative example, as shown in fig. 17-18, the third radio frequency 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 switching modules, and a plurality of combiners.

The antenna group comprises a first antenna ANT1, a second antenna ANT2, a third antenna ANT3 and a fourth antenna ANT4. 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 frequency band and a 5G NR frequency 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 an antenna having a resonance element formed of the following antenna structure: 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 is configured to support transceiving processing of radio frequency signals of multiple intermediate frequency bands and support a non-independent networking mode, and at least support transceiving processing of a first intermediate frequency band signal, transceiving processing of a second intermediate frequency band signal, and master set MIMO receiving processing of the second intermediate frequency band signal. The radio frequency LB L-PA Mid device 50 may be the third radio frequency MHB L-PA Mid device in any one of the embodiments of fig. 13 to 16. Illustratively, the frequency bands of the plurality of intermediate frequency band signals may include at least B1, B3, B25, B34, B66, B39, N1 and N3 frequency bands, wherein the preset first intermediate frequency band may include, but is not limited to, a frequency band such as B3 or B1, and the preset second intermediate frequency band may include, but is not limited to, a frequency band such as N1 or N3.

The third rf transceiver system shown in fig. 18 further includes an rf front-end device for supporting transceiving processing of a plurality of low-band rf signals, as shown in fig. 18, 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.

Fig. 18 is a schematic structural diagram of a second embodiment of a third radio frequency transceiving system in an embodiment of the present application, and the working principle of B3+ N1EN-DC is analyzed based on the radio frequency transceiving system shown in fig. 18 and by combining fig. 16 and fig. 17, taking the preset first intermediate frequency band as a B3 frequency band and the preset second intermediate frequency band as an N1 frequency band as an example.

B3 The TX link: a transmission signal (B3 TX 1) of the first intermediate frequency band signal is output from the TX1 MB port of the radio frequency transceiver 40, and is transmitted to the first intermediate frequency transmission port MB RFIN1 port (denoted as 4G MB RFIN1 in fig. 18) of the radio frequency MHB L-PA Mid device 50 through a radio frequency line; after the signal is amplified by a first intermediate frequency power amplifier 111 (shown as MB 4GPA1 in fig. 18), the signal is filtered by a B3 TX Filter by a B3 Duplexer1, and then is output by an intermediate frequency auxiliary transceiving port MB INOUT; via Path05, to the second combiner 82; after being combined by the second combiner 82, B3 TX1 transmits from the second antenna ANT2 via the Path03 Path.

B3 PRX link: a receiving signal (B3 RX 1) of the first intermediate frequency 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 second combiner 82 passes through Path05 to the intermediate frequency auxiliary transceiving port MB INOUT of the radio frequency MHB L-PA Mid device 50, and after being filtered by the B3 Duplexer duplex 1 to the B3 RX1, the second combiner is amplified by a low noise amplifier 143, such as the LNA6 in fig. 18, and then passes through the fourth switching unit 144, such as the 6P6T switch in fig. 18; 6P6T is switched to contact 6 and output from receive port LNA OUT 6; b3 RX1 enters the rf transceiver 40 via the SDR PRX3 port.

B3 DRX (discontinuous reception) link: a diversity reception 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; after being combined by the fourth combiner 84, the combined signal passes through Path10 to the third filter 73; b3 The 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. 18) of the LFEM device 60; the SP3T #3 switch inside the LFEM device 60 switches the single port to the low noise amplifier LNA3 path inside the LFEM device 60; amplified by a low noise amplifier LNA3 and then switched to a 6P6T switch inside 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; b3 DRX enters the rf transceiver 40 via the SDR DRX0 port.

N1 TX link: the transmission signal (N1 TX) of the second intermediate frequency signal is output from the TX0 MB port of the radio frequency transceiver 40, and is transmitted to the second intermediate frequency transmission port MB RFIN2 port (denoted as 4g MB RFIN2 in fig. 18) of the radio frequency MHB L-PA Mid device 50 through the radio frequency line; after the signal is amplified by the second intermediate frequency power amplifier 121 (indicated as MB 4g PA2 in fig. 18), the signal is switched to the second switching unit 122 as 3P5T in fig. 18; the 3P5T switch is switched to the contact 4, filtered by the N1 TX Filter, and sent to the first switching unit 131 (for example, the DP7T switch in fig. 18); the DP7T switch is switched to the contact 1 and outputs from a first antenna port ANT1; via Path02 to the first combiner 81; after being combined by the first combiner 81, the N1 TX is emitted from the first antenna ANT1 through the Path 01.

N1PRX 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 antenna signals are routed to a first antenna port ANT1 of the MHB PA Mid device 50 through a Path02 Path; the first switch unit 131 (e.g., DP7T switch in fig. 18) switches to the contact 4, and after N1 RX filtering, to a third switch unit 142 (e.g., SP3T #1 switch in fig. 18) of the first receiving circuit 140; the SP3T #1 switch switches the single port to a low noise amplifier 143 (such as LNA1 in the radio frequency MHB L-PA Mid device 50 in fig. 18); amplified by a low noise amplifier LNA1, and sent to a fourth switching unit 144 (such as a 6P6T switch in fig. 18); the 6P6T switch switches to contact 1 to a receive port LNA OUT (e.g., LNA OUT1 in fig. 18) output; n1PRX enters the rf transceiver 40 through the SDR PRX0 port.

N1PRX MIMO link: a master 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 signal is transmitted to the first filter 71 through a Path 04; the N1PRX MIMO is filtered by the first filter 71 and then goes to an auxiliary receiving port LNA IN5 (shown as LMHB LNA IN1 IN fig. 18) of the MHB PA Mid device 50; amplified by a low noise amplifier 143 (LNA 5 shown in fig. 6) and then sent to the fourth switching unit 144 (6P 6T switch in fig. 18); the 6P6T switch is switched to contact 5 and outputs from a receive port LNA OUT (such as LNA OUT5 in fig. 18); the N1PRX MIMO enters the RF transceiver 40 through the SDR PRX1 port.

N1 DRX MIMO link: a diversity MIMO receiving 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 goes to the second filter 72 through a Path 09; the N1 DRX MIMO is filtered by the second filter 72 and then sent to an auxiliary receiving port LNA AUX IN (denoted as LNA AUX LMB IN fig. 6) of the LFEM device 60; the SP3T #5 switch inside the LFEM device 60 switches the single port to the low noise amplifier LNA6 path inside the LFEM device 60; amplified by a low noise amplifier LNA6, and then switched to a 6P6T switch inside the LFEM device 60; the 6P6T switch is switched to the contact 4 and is 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 embodiment of the application supports a non-independent networking mode, and takes a B3+ N1EN-DC combination as an example, B3 has two paths of receiving PRX and DRX, and N1 has four paths of receiving PRX, DRX, PRX MIMO and DRX MIMO; in addition, in the embodiment of the application, the external multi-mode multi-frequency power amplifier device and the preset frequency band 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, the intermediate frequency auxiliary receiving port MB RX is directly connected with the LNA of the receiving circuit in the radio frequency front-end device through the internal routing of the device, and an additional auxiliary receiving port is not needed, so that the complexity of single-board wiring layout 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 transceiver system IN the embodiment of the present application further implements transmit and receive channels for multiple frequency bands, including B1/N1, B3/N3, B66, B25, B34, B39, B7, B40, B41, and 2G HB GSM, as well as 3 auxiliary transmit/receive ports TRX and 6 auxiliary receive ports LNA IN for external frequency band extension, thereby expanding the communication frequency band of the rf transceiver system and improving the communication performance of the rf transceiver 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 and the preset frequency band duplexer in a radio frequency front-end device is realized by arranging the third radio frequency transceiving system in the communication equipment, so that a non-independent networking mode is supported, the integration level is improved, and the occupied area of a PCB (printed circuit board) 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 and transmission control is reduced, complexity of single-board wiring layout is reduced, and 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 main set antenna radio frequency link and is provided with a first intermediate frequency transmitting port and an intermediate frequency auxiliary transmitting port; the radio frequency front end device comprises:

the radio frequency front-end device is a radio frequency MHB L-PA Mid device.

2. The radio frequency front end device of claim 1, 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 first intermediate frequency transmitting port, and the output end of the first intermediate frequency power amplifier is connected with the intermediate frequency auxiliary transmitting port.

3. The radio frequency front end device of claim 2, further provided with a second 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 the second coupling output port.

4. The radio frequency front end device of claim 1, the second transmit circuit comprising: the second intermediate frequency power amplifier and the second switch unit; wherein,

the input end of the second intermediate frequency power amplifier is connected with the second intermediate frequency transmitting port, and the output end of the second intermediate frequency power amplifier is connected with a first port of the second switch unit, so as to perform power amplification processing on a plurality of intermediate frequency signals including the second intermediate frequency signal received by the second intermediate frequency transmitting port;

a plurality of second ports of the second switch unit are connected to the first switch circuit, and are configured to output the amplified second intermediate frequency signal to the first antenna port, and output a plurality of amplified intermediate frequency signals other than the second intermediate frequency signal to the first antenna port or the second antenna port; a plurality of first ports of the second switch unit are correspondingly connected with the first receiving circuit and used for outputting a plurality of intermediate frequency signals from the first switch circuit to the first receiving circuit.

5. The radio frequency front end device of claim 1, wherein the first receive circuit comprises: at least three low noise amplifiers, at least one third switch unit and a fourth switch unit; wherein,

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

the input end of a low-noise amplifier 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 the fourth switching unit and used for amplifying the first intermediate frequency band signal and outputting the amplified first intermediate frequency band signal to a receiving port through the fourth switching unit;

the input end of a low-noise amplifier is connected with one auxiliary receiving port, and the output end of the low-noise amplifier is connected with a second port of the fourth switching unit, and is used for amplifying the main set MIMO signal of the second intermediate frequency band signal and outputting the amplified main set MIMO signal to one receiving port through the fourth switching unit.

6. The rf front-end device of claim 1, wherein the external 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 intermediate frequency auxiliary transmitting port is connected with one output port of a preset first intermediate frequency band duplexer and used for outputting the first intermediate frequency band signal;

the auxiliary receiving port is connected with the other output port of the preset first intermediate frequency band duplexer and used for receiving the first intermediate frequency band signal;

the common port of the first intermediate band duplexer is preset for receiving or transmitting the first intermediate band signal.

7. The radio frequency front end device of claim 6, wherein the preset first mid-band comprises one of: b3, B1 frequency band;

the preset first middle band duplexer comprises one of the following components: a B3 duplexer and a B1 duplexer;

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

8. 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 LFEM device, and the radio frequency front end device of any one of claims 1-7 as a first radio frequency front end device; wherein,

9. The radio frequency transceiver system of claim 8, wherein the first antenna is connected to a first antenna port of the first radio frequency front end 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 first radio frequency front-end 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;

the third antenna is connected with a medium-high frequency antenna port of the LFEM 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 LFEM 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 LFEM device through the third filter.

10. A communication device comprising a radio frequency transceiving system according to any one of claims 8 to 9.

11. A radio frequency front-end device is characterized in that the device is used for a main set antenna radio frequency link and is provided with a first intermediate frequency transmitting port, at least one receiving port, at least one auxiliary receiving port, an intermediate frequency auxiliary receiving and transmitting port and an intermediate frequency auxiliary receiving port; the intermediate frequency auxiliary receiving port is connected with an auxiliary receiving port through a radio frequency line; the radio frequency front end device comprises:

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 separating a receiving and transmitting path according to the receiving and transmitting signal direction of the first intermediate frequency band signal so as to realize single-antenna bidirectional communication;

the radio frequency front-end device is a radio frequency MHB L-PA Mid device.

12. The radio frequency front end device of claim 11, 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 first intermediate frequency transmitting port, and the output end of the first intermediate frequency power amplifier is connected with the switching circuit.

13. The rf front-end device of claim 11, 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 duplexer is connected with the intermediate-frequency auxiliary receiving port and used for outputting the first intermediate-frequency signal received by the public port of the first intermediate-frequency duplexer.

14. The radio frequency front end device of claim 13, wherein the preset first mid-band comprises one of: b3, B1 frequency band;

15. The radio frequency front end device of claim 11, further provided with a second coupled 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 transceiving 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 the second coupling output port.

16. The radio frequency front end device of claim 11, the second transmit circuit comprising: the second intermediate frequency power amplifier and the second switch unit; wherein,

the input end of the second intermediate frequency power amplifier is connected with the second intermediate frequency transmitting port, and the output end of the second intermediate frequency power amplifier is connected with a first port of the second switch unit and used for performing power amplification processing on a plurality of intermediate frequency signals including the second intermediate frequency signals received by the second intermediate frequency transmitting port;

and a plurality of second ports of the second switch unit are connected with the first switch circuit and used for outputting the amplified second intermediate frequency band signals to the first antenna port and outputting a plurality of intermediate frequency band signals except the second intermediate frequency band signals to the first antenna port or the second antenna port.

17. The radio frequency front end device of claim 11, wherein the first receive circuit comprises: at least three low noise amplifiers, at least one third switch unit and a fourth switch unit; wherein,

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

the input end of a low-noise amplifier 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 the other second port of the fourth switching unit and used for amplifying the first intermediate-frequency signal and outputting the amplified first intermediate-frequency signal to a receiving port through the fourth switching unit;

the input end of a low-noise amplifier is connected with one auxiliary receiving port, and the output end of the low-noise amplifier is connected with the second port of the fourth switching unit, and is used for amplifying the main set MIMO signal of the second intermediate frequency band signal and outputting the amplified main set MIMO signal to one receiving port through the fourth switching unit.

18. 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, and a third filter, a LFEM device, and the radio frequency front end device of any one of claims 11-17 as a second radio frequency front end device; wherein,

the radio frequency transceiver is connected with the first antenna through a second radio frequency front-end 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;

19. The radio frequency transceiver system of claim 18, wherein the first antenna is connected to a first antenna port of the second radio frequency front end 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 second radio frequency front-end 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 receiving port of the second radio frequency front-end device;

20. A communication device comprising the radio frequency transceiving system of claim 18 or 19.

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

the radio frequency front-end device is a radio frequency MHB L-PA Mid device.

22. The radio frequency front end device of claim 21, 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 first intermediate frequency transmitting port, and the output end of the first intermediate frequency power amplifier is connected with one input port of the switching circuit.

23. The rf front-end device of claim 22, wherein the switching circuit is a preset first if duplexer, wherein the preset first if is a frequency band in which the first if signal is located;

the other output port of the first intermediate band duplexer is connected with an input port of the first receiving circuit, and is used for outputting the first intermediate band signal received through the common port of the first intermediate band duplexer.

24. The radio frequency front end device of claim 23, wherein the preset first mid-band comprises one of: b3, B1 frequency band;

25. The rf front-end device of claim 21, further provided with a second coupled output port;

26. The radio frequency front end device of claim 21, wherein the second transmit circuit comprises: the second intermediate frequency power amplifier and the second switch unit; wherein,

27. The radio frequency front end device of claim 21, wherein the first receive circuit comprises: at least three low noise amplifiers, at least one third switch unit and a fourth switch unit; wherein,

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

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

28. 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, and a third filter, a LFEM device, and the radio frequency front end device of any one of claims 21-27 as a third radio frequency front end device; wherein,

29. The radio frequency transceiver system of claim 28, wherein the first antenna is connected to a first antenna port of the third radio frequency front end 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 third radio frequency front-end 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;

30. A communication device comprising the radio frequency transceiver system of claim 28 or 29.