CN112436846B

CN112436846B - Radio frequency L-PA Mid device, radio frequency transceiving system and communication equipment

Info

Publication number: CN112436846B
Application number: CN202011389262.3A
Authority: CN
Inventors: 王国龙
Original assignee: Guangdong Oppo Mobile Telecommunications Corp Ltd
Current assignee: Guangdong Oppo Mobile Telecommunications Corp Ltd
Priority date: 2020-12-02
Filing date: 2020-12-02
Publication date: 2022-03-15
Anticipated expiration: 2040-12-02
Also published as: CN112436846A

Abstract

The invention relates to a radio frequency L-PA Mid device, a radio frequency transceiving system and communication equipment. The radio frequency L-PA Mid comprises: the first transmitting module is connected with the low-frequency transmitting port and used for receiving a plurality of low-frequency signals and amplifying and filtering the received low-frequency signals; the second transmitting module is connected with the intermediate frequency transmitting port and the high frequency transmitting port; the first ends of the low-frequency switch circuit are respectively connected with the first transmitting module correspondingly, and the second end of the low-frequency switch circuit is connected with an antenna port; the first ends of the medium-high frequency switch circuit are respectively and correspondingly connected with the second transmitting module; and a plurality of first ends of the receiving module are respectively and correspondingly connected with a plurality of first ends of the low-frequency switch circuit and the medium-high frequency switch circuit, and a plurality of second ends of the receiving module are respectively and correspondingly connected with a plurality of receiving ports. The receiving and transmitting control of a plurality of low, medium and high frequency signals can be realized, and the integration level of the radio frequency L-PA Mid device is greatly improved.

Description

Radio frequency L-PA Mid device, radio frequency transceiving system and communication equipment

Technical Field

The present application relates to the field of radio frequency technologies, and in particular, to a radio frequency L-PA Mid device, a radio frequency transceiving system, and a communication device.

Background

With the development and progress of technology, in order to meet the increasing demands of various network systems and simultaneously solve the problem of poor PCB layout, the high integration and miniaturization of devices are the most significant trends. From the Phase2 product which only supports single frequency band initially to the Phase7 product which supports integration of each system, the integration level of the device is higher and higher, and the packaging size of the device is smaller and smaller.

Generally, a 2G, 3G or 4G architecture design defines a middle-frequency and high-frequency power amplifier module with a built-in low-noise amplifier, but when the module is applied to a radio frequency transceiving system to receive low-frequency, middle-frequency and high-frequency signals, the occupied radio frequency area is large, and along with the higher and higher requirement on the corresponding cruising ability of a terminal, the capacity of a battery needs to be improved, so that the area of a mainboard occupied by the battery is increased, and the occupied area of other modules on the mainboard needs to be further compressed.

Disclosure of Invention

The embodiment of the application provides a radio frequency L-PA Mid device, a radio frequency transceiving system and a communication device, which can improve the integration level of the radio frequency L-PA Mid device and reduce the occupied area of a mainboard.

A radio frequency L-PA Mid device configured with a low frequency transmit port, an intermediate frequency transmit port, a high frequency transmit port, and a plurality of receive ports for connection to a radio frequency transceiver and a plurality of antenna ports for connection to an antenna; the radio frequency L-PA Mid comprises:

the first transmitting module is connected with the low-frequency transmitting port and used for receiving a plurality of low-frequency signals and amplifying and filtering the received low-frequency signals;

the second transmitting module is connected with the intermediate frequency transmitting port and the high frequency transmitting port and used for receiving a plurality of intermediate frequency signals and a plurality of high frequency signals and amplifying and filtering the received intermediate frequency signals and the received high frequency signals;

a plurality of first ends of the low-frequency switch circuit are respectively and correspondingly connected with the first transmitting module, and a second end of the low-frequency switch circuit is connected with an antenna port;

a plurality of first ends of the medium-high frequency switch circuit are respectively and correspondingly connected with the second transmitting module, and a plurality of second ends of the medium-high frequency switch circuit are respectively and correspondingly connected with the antenna ports;

the receiving module is used for receiving a plurality of low-frequency signals received by the low-frequency switch circuit and/or a plurality of intermediate-frequency signals or a plurality of high-frequency signals received by the medium-high frequency switch circuit, amplifying, filtering and outputting the signals through the receiving port.

A radio frequency transceiving system comprising:

the radio frequency L-PA Mid device as described above;

a first end of the first combiner is connected with a plurality of antenna ports of the radio frequency L-PA Mid device;

the first antenna is connected with the second end of the first combiner and used for receiving and transmitting radio frequency signals;

and the radio frequency transceiver is connected with the radio frequency L-PA Mid device.

A communication device comprises the radio frequency transceiving system.

The radio frequency L-PA Mid device, the radio frequency transceiving system and the communication equipment integrate the first transmitting module, the second transmitting module, the low-frequency switch circuit, the medium-high frequency switch circuit and the receiving module, can realize transceiving control of a plurality of low-frequency signals, medium-frequency signals and high-frequency signals, can avoid the condition that the traditional radio frequency L-PA Mid device is externally provided with a corresponding switching circuit to realize receiving of the low-frequency signals, the medium-frequency signals and the high-frequency signals, and improve the integration level of the radio frequency L-PA Mid device.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments or the conventional technologies of the present application, the drawings used in the descriptions of the embodiments or the conventional technologies will be briefly introduced below, it is obvious that the drawings in the following descriptions are only some embodiments of the present application, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.

FIG. 1 is one of the block diagrams of the structure of an RF L-PA Mid device in one embodiment;

FIG. 2 is a second block diagram of the RF L-PA Mid device in one embodiment;

FIG. 3 is a third block diagram of the RF L-PA Mid device in one embodiment;

FIG. 4 is a block diagram of the structure of an RF L-PA Mid device in one embodiment;

FIG. 5 is a block diagram of the structure of an RF L-PA Mid device in one embodiment;

FIG. 6 is a sixth block diagram illustrating the structure of an exemplary RF L-PA Mid device;

FIG. 7 is a seventh block diagram illustrating the structure of an exemplary RF L-PA Mid device;

FIG. 8 is an eighth schematic block diagram of an exemplary RF L-PA Mid device;

FIG. 9 is a ninth block diagram illustrating the architecture of an exemplary RF L-PA Mid device;

FIG. 10 is a block diagram of an exemplary RF transceiver system;

FIG. 11 is a second block diagram illustrating the structure of an RF transceiver system according to an embodiment;

FIG. 12 is a third block diagram illustrating an exemplary RF transceiver system;

fig. 13 is a fourth block diagram of an rf transceiver system according to an embodiment.

Detailed Description

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

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

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

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

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

The radio frequency L-PA Mid device according to the embodiment of the present application may be applied to a communication device having a wireless communication function, where the communication device may be a handheld device, a vehicle-mounted device, a wearable device, a computer device, or other processing device connected to a wireless modem, and various forms of User Equipment (UE) (e.g., a Mobile phone), a Mobile Station (MS), and the like. For convenience of description, the above-mentioned devices are collectively referred to as communication devices, and the network devices may include base stations, access points, and the like.

As shown in fig. 1, the embodiment of the present application provides a radio frequency L-PA Mid device. The rf L-PA Mid device can be understood as a Power Amplifier module (Power Amplifier Modules including LNAs) With a built-in low noise Amplifier. The radio frequency L-PA Mid device can support receiving and transmitting of low-frequency signals, intermediate-frequency signals and high-frequency signals of a plurality of different frequency bands, achieves receiving switching control and transmitting switching control among a plurality of low-frequency signals, switching control between transmitting and receiving, receiving switching control and transmitting switching control among a plurality of intermediate-frequency signals, and switching control among transmitting and receiving, and achieves receiving switching control and transmitting switching control among a plurality of high-frequency signals and switching control among transmitting and receiving. The plurality of low, middle and high frequency signals may include low, middle and high frequency signals of different frequency bands among 2G signals, 3G signals and 4G signals. Specifically, the frequency bands of the low-frequency signals may include at least two or any combination of B8, B12, B20, B26, B28A, B28B, B13, and B19, including at least one overseas frequency band of B28A, B28B, B13, and B29. The frequency bands of the plurality of intermediate frequency signals may include 4G signals of different intermediate frequency bands, and specifically, may be LTE signals of B1, B3, B25, B34, B66, B39, B30, B7, B40, and B41 frequency bands. The frequency bands of the plurality of intermediate frequency signals further include 5G signals, and the 5G signals may include at least NR signals of the N41 frequency band. The frequency bands of the plurality of high frequency signals may include at least two or any combination of B30, B7, B40 and B41, including at least the overseas band of B30. Therefore, the rf L-PA Mid device in the embodiment of the present application may also be referred to as a Middle and High Band PA Mid With LNA (MHB L-PA Mid) module With a built-in low noise amplifier.

In one embodiment, the radio frequency L-PA Mid device may be understood as a package structure configured with a high frequency transmit port HB RFIN, a medium frequency transmit port 4G MB RFIN, a low frequency transmit port 4G LB RFIN and a plurality of receive ports LNA OUT (LNA OUT1, LNA OUT2, LNA OUT3) for connecting a radio frequency transceiver and a plurality of antenna ports LB ANT, MB ANT, HB ANT for connecting an antenna. The receiving port LNA OUT, the high-frequency transmitting port HB RFIN, the intermediate-frequency transmitting port 4G MB RFIN, the low-frequency transmitting port 4G LB RFIN and the antenna ports LB ANT, MB ANT and HB ANT which are configured in the device can be understood as radio frequency pin terminals of the radio frequency L-PA Mid device and are used for being connected with external devices. Specifically, the receiving port LNA OUT, the high frequency transmitting port HB RFIN, the intermediate frequency transmitting port 4G MB RFIN, and the low frequency transmitting port 4G LB RFIN may be used to connect with a radio frequency transceiver. The antenna ports LB ANT, MB ANT, HB ANT may be used to connect with an antenna. The number of the antenna ports in the embodiment of the present application is at least three, and the antenna ports at least include a first antenna port LB ANT, a second antenna port MB ANT, and a third antenna port HB ANT.

Illustratively, the low frequency transmitting port 4G LB RFIN is configured to receive a plurality of low frequency signals transmitted by the radio frequency transceiver, and the radio frequency L-PA Mid device may perform filtering, amplifying, filtering and processing on the plurality of input low frequency signals to output the signals to the antenna interface, and transmit the signals through an antenna connected to the first antenna port LB ANT to implement transmission control on the plurality of low frequency signals. The intermediate frequency transmitting port 4G MB RFIN is used for receiving a plurality of intermediate frequency signals sent by the radio frequency transceiver, and the radio frequency L-PA Mid device can perform filtering, amplifying and filtering processing on the plurality of input intermediate frequency signals to output to the antenna interface, and transmit the signals through the antenna connected with the second antenna port MB ANT to realize the transmission control of the plurality of intermediate frequency signals. The high-frequency transmitting port HB RFIN is used for receiving a plurality of high-frequency signals sent by the radio-frequency transceiver, the radio-frequency L-PA Mid device can carry out filtering, amplifying and filtering processing on the plurality of input high-frequency signals so as to output the signals to the antenna interface, and the signals are transmitted by the antenna connected with the third antenna port HB ANT, so that the transmission control of the plurality of high-frequency signals is realized. The first antenna port LB ANT is used for receiving a plurality of low-frequency signals received by an antenna, the second antenna port MB ANT is used for receiving a plurality of intermediate-frequency signals received by the antenna, the third antenna port HB ANT is used for receiving a plurality of high-frequency signals received by the antenna, and the radio frequency L-PA Mid device can process, filter, amplify and filter a plurality of input low, medium and high-frequency signals to output to a corresponding receiving port LNA OUT and output to a radio frequency transceiver through the receiving port LNA OUT so as to realize the receiving control of a plurality of low, medium and high-frequency signals.

Specifically, in one embodiment, the rf L-PA Mid device includes a first transmitting module 110, a second transmitting module 120, a low frequency switch circuit 130, a medium frequency switch circuit 140, and a receiving module 150.

The first transmitting module 110 includes an input terminal and a plurality of output terminals. The input end of the first transmitting module 110 is connected to the low frequency transmitting port 4G LB RFIN, and the plurality of output ends of the first transmitting module 110 are connected to the plurality of first ends of the low frequency switch circuit 130 in a one-to-one correspondence. The transmitting port 4G LB RFIN, the first transmitting module 110, the low frequency switch circuit 130, and the first antenna port LB ANT may form a plurality of first transmitting paths. That is, the transmitting module receives a plurality of low frequency signals through the transmitting port 4G LB RFIN, amplifies and filters the received low frequency signals, and then the low frequency switch circuit 130 selects any one of the low frequency signals from the plurality of low frequency signals after filtering, amplifying and filtering to output the selected low frequency signal to the first antenna port LB ANT, so as to implement the switching transmission control of the plurality of low frequency signals.

The second transmitting module 120 includes two input terminals and a plurality of output terminals. One input end of the second transmitting module 120 is connected to the intermediate frequency transmitting port 4G MB RFIN, and the other input end of the second transmitting module 120 is connected to the high frequency transmitting port HB RFIN. A plurality of output terminals of the second transmitting module 120 are connected to a plurality of first terminals of the middle and high frequency switch circuit 140 in a one-to-one correspondence. The middle frequency transmitting port 4G MB RFIN, the second transmitting module 120, the middle and high frequency switching circuit 140, and the second antenna port MB ANT may form a plurality of second transmitting paths. That is, the second transmitting module 120 receives a plurality of intermediate frequency signals through the intermediate frequency transmitting port 4G MB RFIN, amplifies and filters the received intermediate frequency signals, and selects any one of the intermediate frequency signals from the plurality of amplified and filtered intermediate frequency signals through the intermediate and high frequency switch circuit 140 to output to the second antenna port MB ANT, so as to realize the switching transmission of the plurality of intermediate frequency signals. Accordingly, the high frequency transmission port HB RFIN, the second transmission module 120, the middle and high frequency switching circuit 140, and the third antenna port HB ANT may constitute a plurality of third transmission paths. That is, the second transmitting module 120 receives a plurality of high frequency signals through the high frequency transmitting port HB RFIN, performs amplification filtering processing on the received high frequency signals, and selects any one of the high frequency signals from the plurality of high frequency signals subjected to the filtering amplification filtering processing through the middle/high frequency switch circuit 140 to output to the third antenna port HB ANT, thereby realizing switching transmission control of the plurality of high frequency signals.

The receiving module 150 includes a plurality of input terminals and a plurality of output terminals. A plurality of input terminals of the receiving module 150 are connected to a plurality of first terminals of the low frequency switch circuit 130 and a plurality of first terminals of the medium-high frequency switch circuit 140 in a one-to-one correspondence manner, and are configured to receive a plurality of low frequency signals, a plurality of intermediate frequency signals, and a plurality of high frequency signals, and amplify and filter the received plurality of low frequency signals, a plurality of intermediate frequency signals, and a plurality of high frequency signals, and a plurality of output terminals of the receiving module 150 are connected to a plurality of receiving ports LAN OUT in a one-to-one correspondence manner. The first antenna port LB ANT, the low frequency switch circuit 130, the receiving module 150, and the receiving port LNA OUT may form a plurality of low frequency signal receiving paths. The second antenna port MB ANT, the middle-high frequency switch circuit 140, the receiving module 150, and the receiving port LNA OUT may constitute a plurality of middle frequency signal receiving paths. The third antenna port HB ANT, the middle and high frequency switch circuit 140, the receiving module 150, and the receiving port LNA OUT may constitute a plurality of high frequency signal receiving paths. The receiving module 150 includes at least one low noise amplifier, and an output terminal of each low noise amplifier can be used as an output terminal of the receiving module 150. The filtered low-frequency signals, intermediate-frequency signals or high-frequency signals are amplified by each low-noise amplifier and then output at least one low-frequency signal, one intermediate-frequency signal or one high-frequency signal to a corresponding receiving port LNA OUT, so that switching receiving control of the low-frequency signals, the intermediate-frequency signals and the high-frequency signals is realized.

The first ends of the low frequency switch circuit 130 are respectively connected to the first transmitting module 110 and the receiving module 150. The second terminal of the low frequency switch circuit 130 is connected to an antenna port LB ANT, and the low frequency switch circuit 130 can selectively conduct a transmit path or a receive path of any low frequency signal. The first ends of the middle-high frequency switch circuit 140 are respectively connected to the second transmitting module 120 and the receiving module 150. A plurality of second terminals of the medium-high frequency switch circuit 140 are respectively connected to the plurality of antenna ports MB ANT, HB ANT in a one-to-one correspondence; the middle-high frequency switch circuit 140 can selectively conduct either a transmission path or a reception path for an intermediate frequency signal or a transmission path or a reception path for a high frequency signal. For example, when the radio frequency L-PA Mid device is in a transmit mode, the low frequency switch circuit 130 may be controlled to selectively conduct a path between the first transmit module 110 and the first antenna port LB ANT to further conduct a transmit path of any low frequency signal; the middle-high frequency switch circuit 140 may also be controlled to selectively conduct a path between the second transmitting module 120 and the second antenna port MB ANT to further conduct a transmitting path of any intermediate frequency signal, and the middle-high frequency switch circuit 140 may also be controlled to selectively conduct a path between the second transmitting module 120 and the third antenna port HB ANT to further conduct a transmitting path of any high frequency signal. When the rf L-PA Mid device is in the receive mode, the low frequency switch circuit 130 may be controlled to selectively conduct a path between the receiving module 150 and the first antenna port LB ANT to further conduct a receive path of any low frequency signal; the middle-high frequency switch circuit 140 may be controlled to selectively connect a path between the receiving module 150 and the second antenna port MB ANT to connect a receiving path of any one of the middle-frequency signals, and the middle-high frequency switch circuit 140 may be controlled to selectively connect a path between the receiving module 150 and the third antenna port HB ANT to connect a receiving path of any one of the high-frequency signals.

The radio frequency L-PA Mid device integrates the first transmitting module 110, the second transmitting module 120, the low frequency switch circuit 130, the medium-high frequency switch circuit 140, and the receiving module 150, so that the transceiving control of a plurality of low frequency signals, intermediate frequency signals, and high frequency signals can be realized, the reception of low frequency signals, intermediate frequency signals, and high frequency signals by externally arranging a corresponding switching circuit on the conventional radio frequency L-PA Mid device can be avoided, the integration level of the radio frequency L-PA Mid device is improved, and meanwhile, the link loss on a receiving path can be reduced by omitting the externally arranged switching circuit.

As shown in fig. 2, in one embodiment, the high frequency transmission ports include a first sub transmission port 2G HB RFIN and a second sub transmission port 4G HB RFIN. The second transmitting module 120 includes a first power amplifier 121, a second power amplifier 122 and a third power amplifier 123. The input end of the first power amplifier 121 is connected to the intermediate frequency transmit port 4G MB RFIN, and the output end of the first power amplifier 121 is connected to the first end of the medium-high frequency switch circuit 140, and is configured to amplify and filter the received multiple intermediate frequency signals and output the amplified and filtered intermediate frequency signals through the second antenna port MB ANT, so as to implement transmission of the multiple intermediate frequency signals. The input end of the second power amplifier 122 is connected to the second sub-transmission port 4G HB RFIN, and the output end of the second power amplifier 122 is connected to the first end of the middle-high frequency switch circuit 140, and is configured to amplify and filter the received multiple 4G high frequency signals and output the amplified and filtered signals through the third antenna port HB ANT to implement transmission of the multiple 4G high frequency signals. The input end of the third power amplifier 123 is connected to the first sub-transmission port 2G HB RFIN, and the output end of the third power amplifier 123 is connected to the first end of the medium-high frequency switch circuit 140, and is configured to perform amplification and filtering processing on the received 2G high frequency signal and output the signal through the third antenna port HB ANT to implement transmission of the 2G high frequency signal.

As shown in fig. 3, in one embodiment, the middle-high frequency switching circuit 140 includes a first switching unit 141 and a second switching unit 142. Among them, the intermediate frequency transmission port 4G MB RFIN, the first switch unit 141, and the second antenna port MB ANT constitute a plurality of second transmission paths. The second sub transmission port 4G HB RFIN, the first switching unit 141, the second switching unit 142, and the third antenna port HB ANT constitute a plurality of third transmission paths. The first sub transmission port 2G HB RFIN, the second switching unit 142, and the second antenna port MB ANT constitute a 2G high frequency transmission path. Illustratively, the first switching unit 141 may include a DP8T switch. The second switching unit 142 may include a first SPDT switch. The first terminals of the DP8T switch are respectively configured to receive the if signals and the 4G hf signals of multiple frequency bands, and the second terminals of the DP8T switch are respectively connected to a selection terminal (i.e., the first terminal) of the first SPDT switch and the third antenna port HB ANT. The other selection terminal of the first SPDT switch is connected to the output terminal of the third power amplifier 123, and the single terminal (i.e., the second terminal) of the first SPDT is connected to the second antenna port MB ANT, for selectively outputting a 4G intermediate frequency signal or a 2G high frequency signal.

Since the GSM1800/1900TX channel is built in the rf L-PA Mid device, if the GSM1800/1900TX channel is directly switched by the DP8T switch, the GSM1800/1900TX channel is output to the second antenna port MB ANT, in one embodiment, the output power of the 2G high frequency signal is about 32dBm, and the insertion loss between the first sub transmitting port 2G HB RFIN and the antenna is about 1.7 dB. The output power of the second antenna port calculated by the kernel is 32-1.7-30.3 dBm, and the standard of development is 30.5 ± 0.5 dBm. The inventor researches and finds that the insertion loss of the DP8T switch is high, and specific parameters are shown in Table 1.

TABLE 1DP8T switch insertion loss parameters

Frequency band	1.0GHz	2.0GHz
			Insertion loss (dB)	1dB	1.5dB

The excessive insertion loss of the DP8T switch is caused by the fact that the link loss of the rf signal inside the switch is very large due to the multi-path switching, and in order to reduce the routing loss of the 2G high frequency signal on the link, a separate first SPDT switch is used for switching the 2G high frequency signal. The insertion loss of the built-in first SPDT switch is referenced to RF1630 of QORVO, with specific parameters as shown in table 2.

TABLE 2 first SPDT switch insertion loss parameters

Frequency of	Insertion loss
		100～1000	0.3
1000～1600	0.4
		1600～2200	0.45

Combining the switching loss data in table 1 and table 2, it is calculated that the output power value of the 2G high-frequency signal of the radio frequency L-PA Mid device shown in fig. 3 at the antenna port is 32+ (1.5-0.45) -1.7-31.35 dB. The output power of 2G HIGH GSM in the scheme shown in figure 3 is improved by 1dB compared to the scheme shown in figure 2 and is also above the development standard.

It should be noted that, in the embodiment of the present application, in the radio frequency L-PA Mid device, a corresponding receiving path and a corresponding transmitting path are respectively configured for each of the low frequency signal, the intermediate frequency signal, and the high frequency signal.

As shown in fig. 2 and 3, in one embodiment, the second transmitting module 120 further includes at least two rf switches. Among them, a radio frequency switch 124, the intermediate frequency transmission port 4G MB RFIN, the first switch unit 141, and the second antenna port MB ANT constitute a plurality of intermediate frequency transmission paths. For example, if the plurality of intermediate frequency signals are six different frequency bands, i.e., B1, B3, B34, B39, B66, and B25, the rf switch 124 is an SP5T switch, and a single terminal of the SP5T switch is connected to the intermediate frequency transmitting port 4G MB RFIN. The other radio frequency switch 125, the second sub-transmitting port 4G HB RFIN, the first switch unit 141 and the third antenna port HB ANT form a plurality of 4G high frequency transmitting paths; for example, if the plurality of 4G high frequency signals are four different frequency bands, i.e., B30, B7, B40, and B41, the rf switch 125 is a first 4P4T switch.

As shown in fig. 4, in one embodiment, the low frequency transmission ports include a 2G low frequency transmission port 2G LB RFIN and a 4G low frequency transmission port 4G LB RFIN. The first transmitting module 110 includes a fourth power amplifier 111 and a fifth power amplifier 112. The input end of the fourth power amplifier 111 is connected to the 4G low-frequency transmitting port 4G LB RFIN, and the output end of the fourth power amplifier 111 is connected to the first end of the low-frequency switch circuit 130, and is configured to amplify and filter the received multiple 4G low-frequency signals and output the amplified and filtered signals through the first antenna port LB ANT to implement transmission of the multiple 4G low-frequency signals. The input end of the fifth power amplifier 112 is connected to the 2G low-frequency transmitting port 2G LB RFIN, and the output end of the fifth power amplifier 112 is connected to the first end of the low-frequency switch circuit 130, and is configured to amplify and filter the received 2G low-frequency signal and output the amplified and filtered signal through the first antenna port LB ANT to implement transmission of the 2G low-frequency signal.

As shown in fig. 5, in one embodiment, the receiving module 150 includes a first receiving circuit 151, a second receiving circuit 152, and a third receiving circuit 153. At least one first terminal of the first receiving circuit 151 is correspondingly connected to a receiving port, and a plurality of second terminals are correspondingly connected to a plurality of first terminals of the low frequency switch circuit 130, respectively, for performing amplification and filtering processing on a plurality of received low frequency signals. The first receiving circuit 151, the low frequency switch circuit 130, and the first antenna port LB ANT form a low frequency receiving path. At least one first terminal of the second receiving circuit 152 is correspondingly connected to a receiving port, and a plurality of second terminals are respectively correspondingly connected to a part of the first terminals of the middle-high frequency switch circuit 140, for performing amplification and filtering processing on a plurality of received intermediate frequency signals. The second receiving circuit 152, the middle-high frequency switch circuit 140, and the second antenna port MB ANT form an intermediate frequency receiving path. At least one first terminal of the third receiving circuit 153 is correspondingly connected to a receiving port, and a plurality of second terminals are respectively correspondingly connected to a part of the first terminals of the middle-high frequency switch circuit 140, for performing amplification and filtering processing on the received plurality of high frequency signals. The third receiving circuit 153, the middle-high frequency switch circuit 140, and the third antenna port HB ANT form a high frequency receiving path.

As shown in fig. 6, in one embodiment, the rf L-PA Mid device further includes a plurality of first filtering units 160. The first receiving circuit 151 includes at least a first low noise amplifier 1511 and a third switching unit 1512. The first filtering units 160 are disposed on a transceiving path of the low frequency signals, and are configured to filter a plurality of received or transmitted low frequency signals. A first end of the third switching unit 1512 is connected to the input end of the first low noise amplifier 1511, and second ends of the third switching unit 1512 are respectively connected to one first filtering unit 160. The output end of the first low noise amplifier 1511 is connected to the receiving port LNA OUT, and the first low noise amplifier 1511 is configured to amplify the received filtered low frequency signal and output the amplified low frequency signal through the receiving port LNA OUT.

When the rf L-PA Mid device is in the receiving mode, the first filtering unit 160 filters the received low frequency signal; when the rf L-PA Mid device is in the transmit mode, the first filtering unit 160 filters the transmitted low frequency signal; and the frequency band of the low-frequency signal output by each filtering unit is different. The first filtering unit 160 may correspondingly include a filter, and the filter only allows low-frequency signals in a preset frequency band to pass through. For example, if the frequency bands of the low frequency signals are eight different frequency bands, i.e., B13, B28A, B28B, B29, B12, B8, B20, and B26, eight first filtering units 160 (i.e., eight filters) may be correspondingly disposed to implement filtering processing on the eight low frequency signals. After the filtering processing performed by the eight first filtering units 160, the eight low frequency signals B13, B28A, B28B, B29, B12, B8, B20, and B26 may be correspondingly output to the third switching unit 1512. The third switching unit 1512 is configured to selectively turn on a path between the first terminal and the plurality of second terminals, so as to output a low frequency signal to the first low noise amplifier 1511, and output the low frequency signal to the rf transceiver 420 through any receiving port LNA OUT via an output terminal of the first low noise amplifier 1511, so as to implement receiving of any low frequency signal.

In one embodiment, the number of the first low noise amplifiers 1511 is two. The third switching unit 1512 includes two first terminals and a plurality of second terminals. Two first terminals of the third switching unit 1512 are respectively connected to the input terminals of the two first low noise amplifiers 1511, and a plurality of second terminals of the third switching unit 1512 are connected to the plurality of first filtering units 160 in a one-to-one correspondence, and are configured to selectively turn on paths between at least one first terminal and the plurality of second terminals, so as to simultaneously output at least one filtered low frequency signal to at least one first low noise amplifier 1511 connected to the first terminal. For example, when there are eight first filter circuits, the third switching unit 1512 may include a first SP4T switch and a second SP4T switch. The first terminal of the first SP4T switch (i.e., a first terminal of the third switch unit 1512) is connected to the input terminal of a first low noise amplifier 1511, the output terminal of the first low noise amplifier 1511 is connected to any receiving port LNA OUT, and the four second terminals of the first SP4T switch (i.e., the four second terminals of the third switch unit 1512) are correspondingly connected to a first filtering unit 160. A first terminal of the second SP4T switch (i.e., another first terminal of the third switching unit 1512) is connected to an input terminal of another first low noise amplifier 1511, an output terminal of the first low noise amplifier 1511 is connected to another receiving port LNA OUT, and four second terminals of the second SP4T switch (i.e., another four second terminals of the third switching unit 1512) are correspondingly connected to one first filtering unit 160.

As shown in fig. 6, in one embodiment, the first receiving circuit 151 further includes a fourth switching unit 1513. The fourth switching unit 1513 is connected to the output ends of the two first low noise amplifiers 1511 and the two receiving ports LNA OUT, respectively. Specifically, the fourth switching unit 1513 may be a first DPDT switch. Two second ends of the first DPDT switch are respectively and correspondingly connected to the output ends of the two first low noise amplifiers 1511, and two second ends of the first DPDT switch are respectively and correspondingly connected to the two receiving ports LNA OUT. The fourth switching unit 1513 may be used to selectively output two low frequency signals to the rf transceiver 420.

As shown in fig. 4, in one embodiment, the first transmitting module 110 further includes a multi-channel selection switch 113, the multi-channel selection switch 113 includes a first terminal and a plurality of second terminals, the first terminal of the multi-channel selection switch 113 is connected to the output terminal of the fourth power amplifier 111, and the plurality of second terminals of the multi-channel selection switch 113 are connected to the plurality of first filtering units 160 in a one-to-one correspondence manner, and are configured to output low-frequency signals of different frequency bands to the plurality of first filtering units 160, respectively. Specifically, the multi-channel selection switch 113 includes an SP8T switch. A single terminal (i.e., a first terminal) of the SP8T switch is connected to the output terminal of the fourth power amplifier 111, and a plurality of selection terminals (i.e., second terminals) of the SP8T switch are connected to the plurality of first filtering units 160 in a one-to-one correspondence.

Based on the rf L-PA Mid device shown in fig. 6, the transceiving control of the B28B signal is taken as an example for explanation:

emission control: the low-frequency signal enters through a low-frequency transmitting port 4G LB RFIN of the radio frequency L-PA Mid device, is amplified by the fourth power amplifier 111 and then is output to a single terminal (i.e., a first terminal) of the SP8T switch, a transmitting path of the B28B signal is switched on by the SP8T switch, the low-frequency signal is filtered by the filter in the first filtering unit 160, the B28B signal is output to the first terminal of the low-frequency switching circuit 130, a transmitting path of the B28B signal is switched on by the low-frequency switching circuit 130, and the B28B signal is output to the first antenna port LB ANT, so as to realize transmitting control of the B28B signal.

Receiving and controlling: the low-frequency signal enters through a first antenna port LB ANT of the radio frequency L-PA Mid device, is switched to a receiving channel of the B28B through the low-frequency switch circuit 130, is filtered by a corresponding filter, and then outputs a B28B signal to a first SP4T switch, and turns on a receiving path of the B28B signal through the first SP4T switch, so as to be input to the first low noise amplifier 1511, and then is output from an output end of the first low noise amplifier 1511 to a receiving port LNA OUT, so as to implement receiving control of the B28B signal.

As shown in fig. 6, in one embodiment, the rf L-PA Mid device further includes a plurality of second filtering units 170. The second receiving circuit 152 includes at least a second low noise amplifier 1521 and a fifth switch unit 1522. The plurality of second filtering units 170 are disposed on the transceiving path of the intermediate frequency signals, and are configured to filter a plurality of received or transmitted intermediate frequency signals. A first terminal of the fifth switching unit 1522 is connected to the input terminal of the second low noise amplifier 1521, and second terminals of the fifth switching unit 1522 are respectively connected to one second filtering unit 170. The output end of the second low noise amplifier 1521 is connected to the receiving port LNA OUT, and the second low noise amplifier 1521 is configured to amplify the received filtered intermediate frequency signal and output the amplified intermediate frequency signal through the receiving port LNA OUT.

When the rf L-PA Mid device is in the receiving mode, the second filtering unit 170 filters the received intermediate frequency signal; when the radio frequency L-PA Mid device is in a transmit mode, the second filtering unit 170 filters the transmitted intermediate frequency signal; and the frequency band of the intermediate frequency signal output by each filtering unit is different. The second filtering unit 170 may correspondingly include a filter, and the filter only allows the intermediate frequency signal of the preset frequency band to pass through. For example, if the frequency bands of the plurality of intermediate frequency signals are six different frequency bands, i.e., B1, B3, B34, B39, B66, and B25, six second filtering units 170 (i.e., six filters) may be correspondingly disposed to filter the six intermediate frequency signals. After the filtering processing performed by the six second filtering units 170, the six low-frequency signals B1, B3, B34, B39, B66, and B25 can be correspondingly output to the fifth switching unit 1522.

As shown in fig. 6, in one embodiment, a plurality of second filtering units 170 may share the same first terminal of the middle-high frequency switch circuit 140. Illustratively, four second filtering units 170 for four different frequency bands corresponding to filtering processes B1, B3, B66, B25 may be connected to the same first terminal (e.g., contact 4) of the mid-high frequency switching circuit 140, and two second filtering units 170 for two different frequency bands corresponding to processes B34, B39 may be connected to the same first terminal (e.g., contact 7) of the mid-high frequency switching circuit 140.

In the embodiment of the present application, the number of the second filtering units 170 connected to the same first end of the middle-high frequency switch circuit 140 and the frequency band of the intermediate frequency signal used for filtering processing by the connected second filtering units 170 are not further limited, and may be set according to the frequency band range of each intermediate frequency signal.

The fifth switching unit 1522 includes at least one first terminal and a plurality of second terminals. At least one first end of the fifth switch unit 1522 is correspondingly connected to the input end of at least one second low noise amplifier 1521, and a plurality of second ends of the fifth switch unit 1522 are connected to the plurality of second filtering units 170 in a one-to-one correspondence manner, and are configured to receive the plurality of intermediate frequency signals after filtering processing and input the plurality of intermediate frequency signals to the second low noise amplifier 1521. The fifth switch unit 1522 is configured to selectively turn on a path between the first end and the plurality of second ends, so as to output an intermediate frequency signal to the second low noise amplifier 1521, and output the intermediate frequency signal to the rf transceiver 420 through any receiving port LNA OUT via an output end of the second low noise amplifier 1521, so as to implement receiving of any intermediate frequency signal.

In one embodiment, the number of the second low noise amplifiers 1521 is two. The fifth switching unit 1522 includes two first terminals and a plurality of second terminals. Two first ends of the fifth switch unit 1522 are respectively connected to the input ends of the two second low noise amplifiers 1521, and a plurality of second ends of the fifth switch unit 1522 are connected to the plurality of second filtering units 170 in a one-to-one correspondence manner, and are configured to selectively turn on a path between at least one first end and the plurality of second ends, so as to simultaneously output at least one filtered intermediate frequency signal to at least one second low noise amplifier 1521 connected to the first end and the second end. Illustratively, when there are six second filter circuits, the fifth switching unit 1522 may include a first SP3T switch and a second SP3T switch. A single terminal of the first SP3T switch (i.e., a first terminal of the fifth switch unit 1522) is connected to an input terminal of a second low noise amplifier 1521, an output terminal of the second low noise amplifier 1521 is connected to any receiving port LNA OUT, three selecting terminals of the first SP3T switch are used as three second terminals of the fifth switch unit 1522, and one second terminal is correspondingly connected to a second filter unit 170. A single terminal of the second SP3T switch (i.e., the other first terminal of the fifth switch unit 1522) is connected to an input terminal of another second low noise amplifier 1521, an output terminal of the second low noise amplifier 1521 is connected to another receiving port LNA OUT, three selecting terminals of the second SP3T switch are used as the other three second terminals of the fifth switch unit 1522, and one second terminal is correspondingly connected to one second filter unit 170. The plurality of second filtering units 170 connected to the three selection terminals of the first SP3T switch may include three filters for performing filtering processes on three intermediate frequency signals B39, B3, and B25, respectively, and the plurality of second filtering units 170 connected to the three selection terminals of the second SP3T switch may include four filters for performing filtering processes on four intermediate frequency signals B34, B1, B13, B4, or B66, respectively.

As shown in fig. 6, in one embodiment, the rf L-PA Mid device further includes a plurality of third filtering units 180. The third receiving circuit 153 includes at least a third low noise amplifier 1531 and a sixth switching unit 1532. The plurality of third filtering units 180 are disposed on the transceiving path of the high frequency signals, and are configured to filter the plurality of received or transmitted high frequency signals. A first terminal of the sixth switching unit 1532 is connected to the input terminal of the third low noise amplifier 1531, and second terminals of the sixth switching unit 1532 are respectively connected to one third filtering unit 180. The output end of the third low noise amplifier 1531 is connected to the receiving port LNA OUT, and the third low noise amplifier 1531 is configured to amplify the received filtered high frequency signal and output the amplified high frequency signal through the receiving port LNA OUT.

When the radio frequency L-PA Mid device is in the receiving mode, the third filtering unit 180 filters the received high frequency signal; when the radio frequency L-PA Mid device is in a transmit mode, the third filtering unit 180 filters a transmitted high frequency signal; and the frequency band of the high-frequency signal output by each filtering unit is different. The third filtering unit 180 may correspondingly include a filter, and the filter only allows the high-frequency signal in the preset frequency band to pass through. For example, if the frequency bands of the plurality of high frequency signals are four different frequency bands, i.e., B30, B7, B40, and B41, four third filtering units 180 (i.e., four filters) may be correspondingly disposed to filter the four high frequency signals. After the filtering process of the four third filtering units 180, the four high frequency signals B30, B7, B40, and B41 may be correspondingly output to the sixth switching unit 1532.

In one embodiment, the second filtering unit 170 and the third filtering unit 180 may share the same first terminal of the middle and high frequency switching circuit 140. For example, four second filtering units 170 for four different frequency bands of the corresponding filtering processes B1, B3, B66, and B25 may be connected to the same first terminal (e.g., contact 4) of the second switching circuit shared by the third filtering units 180 for the corresponding filtering process B40, and the other three third filtering units 180 may be correspondingly connected to the three first terminals of the second switching circuit.

In the embodiment of the present application, the number of the third filtering units 180 connected to the same first end of the second switch circuit and the frequency band of the high-frequency signal used for filtering processing by the connected third filtering units 180 are not further limited, and may be set according to the frequency band range of each high-frequency signal.

As shown in fig. 6, in one embodiment, the sixth switching unit 1532 includes at least one first terminal and a plurality of second terminals. At least one first end of the sixth switching unit 1532 is correspondingly connected to the input end of the at least one third low noise amplifier 1531, and a plurality of second ends of the sixth switching unit 1532 are correspondingly connected to the plurality of third filtering units 180, and are configured to receive the plurality of high frequency signals after being filtered and input the plurality of high frequency signals to the third low noise amplifier 1531. The sixth switching unit 1532 is configured to selectively turn on the paths between the first terminal and the plurality of second terminals, so as to output a high-frequency signal to the third low noise amplifier 1531, and output the high-frequency signal to the rf transceiver 420 through the output terminal of the third low noise amplifier 1531 and through any receiving port LNA OUT, so as to receive any high-frequency signal.

As shown in fig. 6, in one embodiment, the third receiving circuit 153 further includes a seventh switching unit 154. The number of the third low noise amplifiers 1531 is two. The seventh switching unit 154 is connected to the output terminal of each second low noise amplifier 1521, the output terminal of each third low noise amplifier 1531, and the plurality of receiving ports LNA OUT, respectively. Specifically, the seventh switching unit 154 may be a second 4P4T switch. Four second terminals of the second 4P4T switch are respectively and correspondingly connected to the output terminals of the two second low noise amplifiers 1521 and the output terminals of the two third low noise amplifiers 1531, and four second terminals of the second 4P4T switch are respectively and correspondingly connected to the four receiving ports LNA OUT. The seventh switching unit 154 may be used to selectively output a plurality of intermediate frequency signals and/or a plurality of high frequency signals to the radio frequency transceiver 420.

In one embodiment, the filter may be a band pass filter, a low pass filter, or the like. It should be noted that, in the embodiment of the present application, the type of the filter in each of the first filtering unit 160, the second filtering unit 170, and the third filtering unit 180 is not further limited, and an appropriate filter may be selected according to the frequency band of the signal to be filtered.

Based on the rf L-PA Mid device shown in fig. 6, the transceiving control of the B25 signal is explained:

emission control: the if signal enters the rf L-PA Mid device from the if transmitting port 4G MB RFIN, is amplified by the first power amplifier 121, and then is output to the single terminal of the SP5T switch, and then is switched to the transmitting path of B25 by the SP5T switch, and after being filtered by the second filtering unit 170, the B25 signal is output to the first terminal (e.g., the contact 4) of the first switching unit 141, and the first switching unit 141 is output to a selection terminal (first terminal) of the second switching unit 142, and is output to the second antenna port MB ANT by the second switching unit 142, so as to implement the transmission control of the B25 signal.

Receiving and controlling: the if signal is input from the second antenna port MB ANT to the rf L-PA Mid device, switched to the receiving path of B25 by the second switch unit 142, filtered by the second filter circuit, and then output a B25 signal to the fifth switch unit 1522 (for example, the second SP3T switch), switched to the second low noise amplifier 1521 by the second SP3T switch, and then switched to the receiving port LNA OUT by the seventh switch unit 154, so as to implement receiving control of the B25 signal.

The control of the transmission and reception of the B41 signal is explained based on a radio frequency L-PA Mid device as shown in fig. 6:

emission control: the high-frequency signal enters the radio frequency L-PA Mid device from the second sub-transmitting port 4G HB RFIN, is amplified by the second power amplifier 122, and is output to the first terminal of the first 4P4T switch, and then is switched to the transmitting path of B41 by the first 4P4T switch, and after being filtered by the third filter circuit, the high-frequency signal outputs a B41 signal to the first terminal (e.g., contact 6) of the first switch unit 141, and then is output to the third antenna port HB ANT by the first switch unit 141, so as to implement transmission of the B41 signal.

Receiving and controlling: the high frequency signal enters the rf L-PA Mid device from the third antenna port HB ANT, is switched to the receiving path of B41 by the first switch unit 141, is filtered by the third filter circuit, and then outputs a B41 signal to the sixth switch unit 1532 (e.g., the third SP4T switch), is switched to the third low noise amplifier 1531 by the third SP4T switch, and is switched to the receiving port LNA OUT by the seventh switch unit 154 (e.g., the second 4P4T switch), so as to implement receiving control of the B41 signal.

By providing the seventh switch unit 154 in the radio frequency L-PA Mid device, a path between any one of the second low noise amplifiers 1521 and any one of the receiving ports LNA OUT can be selectively turned on, and a path between any one of the third low noise amplifiers 1531 and any one of the receiving ports LNA OUT can be selectively turned on, so that flexibility of the output intermediate frequency signal and high frequency signal can be improved.

Based on the radio frequency L-PA Mid device shown in fig. 4 to 6, the transceiver paths of a plurality of low frequency signals, the transceiver paths of a plurality of intermediate frequency signals, and the transceiver paths of a plurality of high frequency signals are all integrated inside the radio frequency L-PA Mid device, so that the use of an external switch and a matching circuit can be avoided, the routing loss on the receiver paths can be reduced, the sensitivity of the radio frequency L-PA Mid device can be improved, and the power consumption of the radio frequency L-PA Mid device can be reduced. In addition, the radio frequency L-PA Mid device is provided with the first filter unit 160, the second filter circuit unit and the third filter unit 180, so that the out-band stray waves of the low, medium and high frequency signals on the corresponding transceiving paths can be filtered, and the communication performance of the radio frequency L-PA Mid device can be improved.

As shown in fig. 7, in one embodiment, the radio frequency L-PA Mid device is further configured with a first coupled output port CPLOUT 1; the radio frequency L-PA Mid device further includes a first coupling unit 210, a second coupling unit 220, a third coupling unit 230, and a first coupling switch 240. The first coupling unit 210 may be coupled between a second end of the low frequency switch circuit 130 and the first antenna port LB ANT, that is, disposed in a transmission path of the low frequency signal, and configured to couple the low frequency signal in the transmission path, so as to output the first coupled signal through a coupling end of the first coupling unit 210. Wherein the first coupled signal is operable to measure the forward coupled power and the directionally coupled power of the low frequency signal. The second coupling unit 220 may be coupled between the middle and high frequency switch circuit 140 and the second antenna port MB ANT, i.e., disposed in a transmission path of the intermediate frequency signal, for coupling the intermediate frequency signal in the transmission path to output a second coupled signal through a coupling terminal of the second coupling unit 220. Wherein the second coupled signal is operable to measure a forward coupled power and a reverse coupled power of the intermediate frequency signal. The third coupling unit 230 may be coupled between the middle and high frequency switching circuit 140 and the third antenna port HB ANT, that is, disposed in a transmission path of the high frequency signal, for coupling the high frequency signal in the transmission path to output a third coupled signal through a coupling terminal of the third coupling unit 230. Wherein the third coupled signal is operable to measure the forward coupled power and the reverse coupled power of the high frequency signal.

The first coupling unit 210, the second coupling unit 220, and the third coupling unit 230 have the same structure, and the first coupling unit 210 is taken as an example for description. Specifically, the first coupling unit 210 includes an input terminal, an output terminal, and a coupling terminal. The input end of the first coupling unit 210 is connected to a second end of the low frequency switch unit, the output end of the first coupling unit 210 is connected to the first antenna port LB ANT, and the coupling end is configured to couple the low 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. Wherein, based on the first forward coupling signal output by the coupling end of the first coupling unit 210, the forward power information of the low frequency signal can be detected; based on the first reverse coupling signal output from the coupling end of the first coupling unit 210, the reverse power information of the low frequency signal may be correspondingly detected, and the detection mode may be defined as a reverse power detection mode.

The first coupling switch 240 is respectively connected to the coupling end of the first coupling unit 210, the coupling end of the second coupling unit 220, the coupling end of the third coupling unit 230, and a coupling output port CPLOUT1, and is used for selectively outputting the first coupling signal, the second coupling signal, or the third coupling signal to the first coupling output port. That is, the first coupling switch 240 is used to switch between a detection mode of the first coupling signal, a detection mode of the second coupling signal, or a detection mode of the third coupling signal.

In this embodiment, the radio frequency L-PA Mid device is provided with only one first coupling output port CPLOUT1, and since the low frequency signals, the intermediate frequency signals, and the high frequency signals of multiple frequency bands are not transmitted simultaneously, one first coupling output port CPLOUT1 can also meet the communication requirement, and also reduce the complexity of radio frequency routing inside the radio frequency L-PA Mid device, reduce external radio frequency lines and switches, reduce the insertion loss of coupling signals, improve the integrity of signals, and simultaneously improve the isolation performance of each routing of the radio frequency L-PA Mid device.

As shown in fig. 8, in one embodiment, the radio frequency L-PA Mid device is further configured with a second coupling output port CPLOUT2, a third coupling output port CPLOUT3, and a coupling input port CPLIN. The rf L-PA Mid device further includes a low frequency coupling unit 250, a second coupling switch 290, an intermediate frequency coupling unit 260, a high frequency coupling unit 270, and a third coupling switch 280. The low frequency coupling unit 250 may be coupled between a second end of the low frequency switch circuit 130 and the first antenna port LB ANT, that is, disposed in a transmission path of the low frequency signal, and configured to couple the low frequency signal in the transmission path, so as to output the low frequency coupled signal through a coupling end of the low frequency coupling unit 250. Wherein the low frequency coupling signal can be used to measure the forward coupling power and the directional coupling power of the low frequency signal. The intermediate frequency coupling unit 260 may be coupled between the intermediate and high frequency switching circuit 140 and the second antenna port MB ANT, i.e., disposed in a transmission path of the intermediate frequency signal, for coupling the intermediate frequency signal in the transmission path to output the intermediate frequency coupled signal through a coupling terminal of the intermediate frequency coupling unit 260. The intermediate frequency coupling signal can be used for measuring the forward coupling power and the reverse coupling power of the intermediate frequency signal. The high-frequency coupling unit 270 may be coupled between the middle and high-frequency switching circuit 140 and the third antenna port HB ANT, that is, disposed in a transmission path of the high-frequency signal, for coupling the high-frequency signal in the transmission path to output the high-frequency coupled signal through a coupling terminal of the high-frequency coupling unit 270. Wherein the high frequency coupling signal can be used to measure the forward coupling power and the reverse coupling power of the high frequency signal.

A plurality of first terminals of the second coupling switch 290 are connected to the coupling terminal of the low frequency coupling unit 250, a second terminal of the second coupling switch 290 is connected to a second coupling output port, and the second coupling output port is connected to the coupling input port via a radio frequency line. And the detection circuit is used for selectively conducting a coupling path of one coupling end and the second coupling output port CPLOUT2 to realize the detection of the forward power of the low-frequency signal and define the detection mode as a forward power detection mode, or conducting a coupling path of the other coupling end and the second coupling output port CPLOUT2 to realize the detection of the reverse power of the low-frequency signal and define the detection mode as a reverse power detection mode. That is, the second coupling switch 290 is used to switch between a forward power detection mode and a reverse power detection mode of the low frequency signal.

The third coupling switch 280 is respectively connected to the second coupling output port, the coupling end of the intermediate frequency coupling unit 260, the coupling end of the high frequency coupling unit 270, and the third coupling output port, and is configured to selectively output the low frequency coupling signal, the intermediate frequency coupling signal, or the high frequency coupling signal to the third coupling output port. That is, the third coupling switch 280 is used to switch between a detection mode for a low frequency coupling signal, a detection mode for an intermediate frequency coupling signal, and a detection mode for a high frequency coupling signal.

As shown in fig. 9, in one embodiment, the second transmitting module 120 further includes an intermediate frequency transmitting circuit and a high frequency transmitting circuit. The rf L-PA Mid device further includes a fourth filtering unit 310, an eighth switching unit 320, and a control module 330. The control module 330 is respectively connected to the if transmitting circuit, the hf transmitting circuit and the if/if switching circuit 140. The control module 330 can control signals (communication system and signal frequency band of the signal) input to the intermediate frequency transmitting circuit and the high frequency transmitting circuit, so that the intermediate frequency transmitting circuit and the high frequency transmitting circuit receive signals of different communication systems and frequency bands.

And the intermediate frequency transmitting circuit is connected with the intermediate frequency transmitting port 4G MB RFIN and is used for receiving a plurality of intermediate frequency range 4G signals and amplifying and filtering the received intermediate frequency range 4G signals. That is, the if transmission circuit can realize transmission control of a plurality of 4G signals, for example, can realize transmission control of 4G signals of the if band such as B1, B3, B34, B39, B66, and B25.

The high-frequency transmitting circuit is connected with the high-frequency transmitting port HB RFIN and used for receiving the 5G signals and the 4G high-frequency signals and amplifying and filtering the received 5G signals. That is, the high-frequency transmission circuit can realize transmission control of a 5G signal, for example, can realize transmission control of a 5G signal of an N41 frequency band. Meanwhile, the high-frequency transmitting circuit may be further configured to receive a plurality of high-frequency-band 4G signals, and perform amplification filtering processing on the received high-frequency-band 4G signals, for example, transmission control of the 4G signals in the B7, B30, B40, and B41 bands may be implemented.

Under the control of the control module 330, the intermediate frequency transmitting circuit and the high frequency transmitting circuit can process and receive a plurality of signals simultaneously. For example, under the control of the control module 330, the if transmitting circuit may process a received 4G signal, e.g., B3 signal, in any if band, and at the same time, the if transmitting circuit may process a received 5G signal, e.g., N41 signal, simultaneously.

The fourth filtering unit 310 is configured to perform filtering processing on the received 5G signal (e.g., the N41 frequency band signal). In one embodiment, the fourth filtering unit 310 may be further configured to filter the 4G signal in the B41 frequency band, and the B41 and the N41 frequency band signal may share the same filter.

A plurality of first terminals of the eighth switch circuit are connected to the plurality of second terminals of the middle/high frequency switch circuit 140 and the fourth filter unit, respectively, and a plurality of second terminals of the eighth switch unit 320 are connected to the first round signaling port SRS1, the second round signaling port SRS2, and the plurality of antenna ports, respectively. Illustratively, the eighth switching circuit may include a 3P4T switch, three first terminals of the 3P4T switch are respectively connected to two second terminals of the mid-high frequency switching circuit 140 and four second terminals of the fourth filtering unit 310, and four second terminals of the 3P4T switch are respectively connected to the second antenna port MB ANT, the third antenna port HB ANT, the first round signaling port SRS1, and the second round signaling port SRS 2. The first round signaling port SRS1 and the second round signaling port SRS2 are used to implement a transmitting SRS function (Sounding Reference Signal).

As shown in fig. 9, in one embodiment, the control module 330 includes a first control unit 331, a second control unit 332, and a third control unit 333. The low frequency switching unit and/or the medium high frequency switching unit may be connected with at least one of the first control unit 331 and the second control unit 332. That is, the low frequency switching unit/the middle high frequency switching unit may simultaneously turn on any two radio frequency paths of the low frequency transmitting circuit, the middle frequency transmitting circuit and the high frequency transmitting circuit under the control of the first control unit 331 or the second control unit 332.

In one embodiment, the first Control unit 331 and the second Control unit 332 may be Mobile Industry Processor Interface (MIPI) -RF Front End Control Interface (RFFE) Control units or RF Front End Control Interface (RFFE) Control units, which conform to a Control protocol of an RFFE bus. When the first and

second control units

331 and 332 are MIPI-RFFE control units or RFFE control units, their rf L-PA Mid devices are also configured with an input pin CLK for a clock signal, an input or bi-directional pin SDATAS for a single/bi-directional data signal, a power supply pin VDD, a reference voltage pin VIO, and so on.

The third control unit 333 is used to control the receiving paths of the 4G signal and the 5G signal of each frequency band. The third control unit 333 is the same as the first control unit 331 or the second control unit 332, and is not described herein again.

The calculation formula of the cascade noise coefficient of the receiving channel of the radio frequency L-PA Mid device is shown as formula 1:

NF-N1 + (N2-1)/G1+ (N3-1)/G1X G2+ (N4-1)/G1X G2X G3+ … (formula 1)

Where N1 to N4 represent the noise figure of the first stage to the fourth stage, respectively, and G1 to G3 represent the gain of the first stage to the third stage, respectively, the final cascade noise figure of the entire receiving path can be calculated by the formula (1). Sensitivity is the minimum input signal level that the communication device can receive while meeting a certain Bit Error Rate (BER) performance.

Further, the third control unit 333 is respectively connected to each low noise amplifier, and is configured to adjust a gain coefficient of each low noise amplifier to reduce the cascade noise coefficients of the 4G signal and the 5G signal receiving paths, so as to reduce the cascade noise coefficient of any receiving path, and further improve the sensitivity of the radio frequency L-PA Mid device.

The embodiment of the application can realize the receiving control of the 4G signals of the middle frequency band and the 4G signals of the high frequency band of a plurality of frequency bands, and can omit an external switching circuit to reduce the link loss on a receiving path, so as to reduce the cascade noise coefficient of any receiving path, and further improve the sensitivity of the radio frequency L-PA Mid device.

The embodiment of the application also provides a radio frequency transceiving system. As shown in fig. 10 to 13, in one embodiment, the rf transceiving system includes the rf L-PA Mid device, the first combiner 410, the first antenna ANT1, and the rf transceiver 420 in any one of the foregoing embodiments.

In one embodiment, the first antenna ANT1 is connected to the first antenna port LB ANT, the second antenna port MB ANT, and the third antenna port HB ANT via the first combiner 410, respectively, so as to implement transceiving of low, medium, and high frequency signals. First antenna ANT1 may be formed using any suitable type of antenna. For example, the first antenna ANT1 may include an antenna having a resonant 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 different frequency bands and frequency band combinations. In the embodiment of the present application, the type of the first antenna ANT1 is not further limited.

The radio frequency transceiving system can reduce the link loss of the low, medium and high frequency signal receiving channels by arranging the radio frequency L-PA Mid device in any embodiment, so as to reduce the cascade noise coefficient of the low, medium and high frequency signal receiving channels and improve the sensitivity of the radio frequency transceiving system.

As shown in fig. 10, in one embodiment, the rf transceiving system further includes a first diversity receiving module 440, a second diversity receiving module 470, a second combiner 430, an rf N41 PA Mid device 450, a main set receiving module 460, a first rf switch 481, and a second rf switch. The first diversity receiving module 440 is configured to support diversity reception control of 4G signals and 5G signals of multiple frequency bands; the second diversity receiving module 470 is configured to support diversity reception control of 4G signals of multiple frequency bands; a first end of the second combiner 430 is connected to an antenna port ANT of the first diversity receiving module 440, and a second end of the second combiner 430 is connected to a second antenna ANT 2; a first end of the first rf switch 481 is connected to the antenna port of the rf N41 PA Mid device 450; the other first end of the first rf switch 481 is connected to the antenna port MHB ANT of the main set receiving module 460; a plurality of second terminals of the first rf switch 481 are respectively and correspondingly connected to the auxiliary transceiver port MHB TRX of the rf L-PA Mid device, the auxiliary transceiver port MHB TRX1 of the first diversity receiving module 440, and the third antenna ANT 3. A first end of the second rf switch is connected to the antenna port MHB ANT of the second diversity receiving module 470, and another first end of the second rf switch is connected to a second end of the first rf switch 481; the second terminal of the second rf switch is connected to a fourth antenna ANT 4.

As shown in fig. 10, in the embodiment of the present application, for a 5G signal in an N41 frequency band, the SRS operating principle of an N41 NSA system is briefly described as follows:

and (3) SRS transmission: the signal is transmitted to a TX1 HB2 port of a radio frequency N41 PA Mid device 450 by a radio frequency transceiver 420, amplified by a power amplifier PA, switched to a filter by a second SPDT switch, output from an antenna port of the radio frequency N41 PA Mid device 450 after filtering processing, transmitted to a first radio frequency switch 481 by a path4, switched to a path5 by the first radio frequency switch 481, output to an auxiliary transceiving port MHB TRX of the radio frequency L-PA Mid device, switched to a third antenna port HB ANT by a DP8T switch, and transmitted to a first antenna ANT1 by a path2, so that an SRS function is realized; then, the signal is switched to a path6 through the first radio frequency switch 481, and is output to an auxiliary transceiving port MHB TRX1 of the first diversity receiving module 440, and the SP7T switch of the first diversity receiving module 440 is switched to a medium-high frequency antenna port MHB ANT of the first diversity receiving module 440, and is switched to a second antenna ANT2 through a path3, so that the SRS function is realized; then, the signal is switched to a path7 through a first radio frequency switch 481 to a third antenna ANT3, so that the SRS function is realized; then, the SRS is switched to the path8 through the first rf switch 481, and then to the second rf switch, and then to the fourth antenna ANT4 through the path11, thereby implementing the SRS function.

The SRS working principle of the N41 SA mode is similar to that of the NSA mode, and is not described in good horse; the SRS paths in the NSA and SA systems are shown in table 3.

TABLE 3 SRS detailed Path configuration Table

	N41 NSA	N41 SA
			Channel0	Path4->Path5->Path2	Path4->Path5->Path2
Channel1	Path4->Path6->Path3	Path4->Path6->Path3
			Channel2	Path4->Path7	Path4->Path7
Channel3	Path4->Path8->Path11	Path4->Path8->Path11

In table 3, Channel0, Channel1, Channel2, and Channel3 are transmission path paths of antennas for transmitting by turns, respectively.

As shown in fig. 13, in the rf transceiving system in one embodiment, the rf N41 PA Mid device 450 is not separately provided, and only one transmission path is configured for the N41 band for the 5G signal of the N41 band. In the NSA mode, the B3 band and the N41 band are combined as endec, and the SRS function is realized by matching the first round of signaling ports SRS1 and the second round of signaling ports SRS 2. The SRS paths in the NSA and SA systems are shown in table 4.

TABLE 4SRS detailed Path configuration Table

	N41 NSA	N41 SA
			Channel0	Path1	Path1
Channel1	Path2->Path5	Path2->Path5
			Channel2	Path3->Path6	Path3->Path6
Channel3	Path4->Path7	Path4->Path7

In this embodiment, the arrangement of the radio frequency N41 PA Mid device 450 is eliminated, and the first radio frequency switch 481 (i.e., the DP4T switch) for realizing the burst switching does not need to be additionally arranged, and only the third SPDT switch needs to be arranged, so that the cost is reduced, and the integration level of the radio frequency L-PA Mid device is further improved.

The radio frequency transceiving system can support the SRS function of 1T4R in a non-independent networking mode and the SRS function of 1T4R in an independent networking mode, and can realize the MIMO function of a 5G NR N41 frequency band, thereby improving the integration level of the radio frequency system, reducing the complexity of the layout and wiring of a PCB of the radio frequency system, reducing the cost and reducing the area of a substrate occupied by each device in the radio frequency system.

The embodiment of the application also provides communication equipment, wherein the communication equipment is provided with the radio frequency transceiving system in any one of the embodiments, and by arranging the radio frequency transceiving system on the communication equipment, the receiving and the transmitting of any one of the low, medium and high frequency bands can be realized by only arranging one radio frequency L-PA Mid device, so that the area of the mainboard occupied by the radio frequency L-PA Mid device is reduced, and meanwhile, a plurality of external frequency bands are all built in the device, thereby reducing the insertion loss of transceiving plastic combination and improving the sensitivity; in addition. The simultaneous transmission processing of the 4G signal and the 5G signal of any intermediate frequency band can be realized only by arranging one radio frequency L-PA Mid device, namely, the double connection of the 4G signal of the 5G frequency band and the intermediate frequency band is realized, and the 5G signal amplification is realized without additionally adopting an externally-hung power amplifier module supporting the 5G frequency band so as to support the SRS function of supporting 1T4R in a non-independent networking mode and the SRS function of supporting 1T4R in an independent networking mode. Based on the radio frequency transceiving system, the cost can be reduced, the integration level of devices can be improved, and the area of each device in the radio frequency system, which occupies a substrate, can be reduced.

In the description herein, references to the description of "some embodiments," "other embodiments," "desired embodiments," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, a schematic description of the above terminology may not necessarily refer to the same embodiment or example.

The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features.

The above-mentioned embodiments only express several embodiments of the present invention, and the description thereof is more specific and detailed, but not construed as limiting the scope of the invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the inventive concept, which falls within the scope of the present invention. Therefore, the protection scope of the present patent shall be subject to the appended claims.

Claims

1. A radio frequency L-PA Mid device, configured with a low frequency transmit port, an intermediate frequency transmit port, a high frequency transmit port and a plurality of receive ports for connection to a radio frequency transceiver, and a plurality of antenna ports for connection to an antenna; the radio frequency L-PA Mid device comprises:

2. The radio frequency L-PA Mid device of claim 1, wherein the high frequency transmit port comprises a first sub-transmit port and a second sub-transmit port; the antenna ports at least comprise a first antenna port, a second antenna port and a third antenna port;

the second transmitting module includes:

the input end of the first power amplifier is connected with the intermediate frequency transmitting port, and the output end of the first power amplifier is connected with the first end of the medium-high frequency switching circuit and is used for amplifying, filtering and processing the received 4G signals of a plurality of intermediate frequency bands;

the input end of the second power amplifier is connected with the second sub-transmitting port, and the output end of the second power amplifier is respectively connected with the receiving module and part of the first ends of the medium-high frequency switch circuit and used for amplifying and filtering the received 4G signals or 5G signals of a plurality of high-frequency bands;

the input end of the third power amplifier is connected with the first sub-transmitting port, and the output end of the third power amplifier is connected with a first end of the medium-high frequency switch circuit and is used for amplifying and filtering the received 2G high-frequency signal;

a second end of the medium-high frequency switch circuit is connected with the second antenna port, and the other second end of the medium-high frequency switch circuit is connected with the third antenna port; and the second end of the low-frequency switch circuit is connected with the first antenna port.

3. The radio frequency L-PA Mid device of claim 2, wherein the medium-high frequency switching circuit comprises: a first switching unit and a second switching unit; wherein,

part of first ends of the first switch units are respectively connected with the output ends of the first power amplifier and the second power amplifier in a one-to-one correspondence manner, two second ends of the first switch units are respectively connected with a first end of the second switch unit and a third antenna port, and the other first end of the second switch unit is connected with the output end of the third power amplifier; a second end of the second switch unit is connected to the second antenna port.

4. The radio frequency L-PA Mid device of claim 1, wherein the plurality of intermediate frequency signals include at least B1, B3, B34, B39, B66, B25 frequency bands; the plurality of high-frequency signals at least comprise B30, B7, B40, B41 and GSM1800 frequency bands.

5. The radio frequency L-PA Mid device of claim 2, wherein the low frequency transmit ports comprise a 2G low frequency transmit port and a 4G low frequency transmit port;

the first transmission module includes:

the input end of the fourth power amplifier is connected with the 4G low-frequency transmitting port, and the output end of the fourth power amplifier is connected with part of the first ends of the low-frequency switch circuit and is used for amplifying and filtering a plurality of received 4G low-frequency signals;

and the input end of the fifth power amplifier is connected with the 2G low-frequency transmitting port, and the output end of the fifth power amplifier is connected with a first end of the low-frequency switching circuit and is used for amplifying and filtering the received 2G low-frequency signal.

6. The radio frequency L-PA Mid device of claim 5, wherein the plurality of low frequency signals includes at least B13, B28A, B28B, B29, B12, B8, B20, B26, GSM900 frequency bands.

7. The radio frequency L-PA Mid device of claim 1, wherein the receiving module comprises:

the first receiving circuit is provided with at least one first end which is correspondingly connected with a receiving port, and a plurality of second ends which are respectively correspondingly connected with a plurality of first ends of the low-frequency switch circuit and are used for receiving a plurality of low-frequency signals output by the low-frequency switch circuit and amplifying and filtering the plurality of low-frequency signals;

at least one first end of the second receiving circuit is correspondingly connected with a receiving port, and a plurality of second ends are respectively correspondingly connected with part of the first ends of the medium-high frequency switch circuit and are used for receiving a plurality of intermediate frequency signals output by the medium-high frequency switch circuit and amplifying and filtering the plurality of intermediate frequency signals;

and at least one first end of the third receiving circuit is correspondingly connected with a receiving port, and a plurality of second ends are respectively correspondingly connected with part of the first ends of the medium-high frequency switch circuit and used for receiving a plurality of high-frequency signals output by the medium-high frequency switch circuit and amplifying and filtering the plurality of high-frequency signals.

8. The radio frequency L-PA Mid device of claim 7, further comprising:

the first filtering units are arranged on a transceiving path of the low-frequency signals and connected with the low-frequency switch circuit, the first filtering units are used for filtering the received low-frequency signals, and the frequency bands of the low-frequency signals output by the first filtering units are different;

the first receiving circuit includes:

the low-frequency signal after filtering processing is amplified by each first low-noise amplifier and then at least one low-frequency signal is output, and the output end of the first low-noise amplifier is connected with one receiving port;

and a first end of the third switching unit is connected with the input end of the first low noise amplifier, and a plurality of second ends of the third switching unit are respectively and correspondingly connected with the first filtering unit and used for receiving a plurality of low frequency signals and selecting at least one low frequency signal to output.

9. The radio frequency L-PA Mid device of claim 8, wherein the number of the first low noise amplifiers is two; the third switching unit comprises two first ends and a plurality of second ends, and the plurality of second ends are connected with the plurality of first filtering units in a one-to-one correspondence manner; wherein,

the input end of the first low noise amplifier is connected with a first end of the third switching unit; and the other input end of the first low noise amplifier is connected with the other first end of the third switching unit.

10. The radio frequency L-PA Mid device of claim 8, wherein the first receive circuit further comprises:

and a plurality of first ends of the fourth switching unit are respectively connected with the receiving ports in a one-to-one correspondence manner, and a plurality of second ends of the fourth switching unit are respectively connected with the first low noise amplifiers in a corresponding manner.

11. The radio frequency L-PA Mid device of claim 7, further comprising:

the second filtering units are arranged on a transceiving path of the intermediate-frequency signals and connected with the medium-high frequency switch circuit, and are used for filtering the received intermediate-frequency signals, and the frequency bands of the intermediate-frequency signals output by the second filtering units are different;

the second receiving circuit includes:

the intermediate frequency signal after filtering processing is amplified by each second low noise amplifier and then at least one intermediate frequency signal is output, and the output end of the second low noise amplifier is connected with one receiving port;

and a fifth switching unit, wherein a first end of the fifth switching unit is connected with an input end of the second low noise amplifier, and a plurality of second ends are respectively correspondingly connected with the second filtering unit, and are used for receiving a plurality of intermediate frequency signals and selecting at least one of the intermediate frequency signals to output.

12. The radio frequency L-PA Mid device of claim 11, wherein the number of the second low noise amplifiers is two; the fifth switch unit comprises two first ends and a plurality of second ends, and the plurality of second ends are connected with the plurality of second filtering units in a one-to-one correspondence manner; wherein,

the input end of the second low noise amplifier is connected with a first end of the fifth switching unit; and the other input end of the second low noise amplifier is connected with the other first end of the fifth switching unit.

13. The radio frequency L-PA Mid device of claim 11, further comprising:

the third filtering units are arranged on a transceiving path of the high-frequency signal and connected with the medium-high frequency switch circuit, and are used for filtering the received high-frequency signal, and the frequency bands of the high-frequency signal output by each third filtering unit are different;

the third receiving circuit further includes:

the high-frequency signal after filtering processing is amplified by each third low-noise amplifier and then at least one high-frequency signal is output, and the output end of the third low-noise amplifier is connected with one receiving port;

and a first end of the sixth switching unit is connected with the input end of the third low noise amplifier, and a plurality of first ends of the sixth switching unit are respectively correspondingly connected with the third filtering units, and are used for receiving a plurality of high-frequency signals and selecting at least one high-frequency signal to output.

14. The radio frequency L-PA Mid device of claim 13, wherein the third receive circuit further comprises:

and a plurality of first ends of the seventh switching unit are respectively connected with the receiving ports in a one-to-one correspondence manner, and a plurality of second ends of the seventh switching unit are respectively connected with the second low noise amplifiers and the third low noise amplifiers in a corresponding manner.

15. The radio frequency L-PA Mid device of claim 1, wherein the radio frequency L-PA Mid device is further configured with a first coupled output port; the radio frequency L-PA Mid device further comprises:

the first coupling unit is arranged in a transmission path of the low-frequency signal and used for coupling the low-frequency signal in the transmission path to output a first coupling signal through a coupling end of the first coupling unit;

the second coupling unit is arranged in a transmitting path of the intermediate frequency signal and used for coupling the intermediate frequency signal in the transmitting path to output a second coupling signal through a coupling end of the second coupling unit;

a third coupling unit, disposed in a transmission path of the high-frequency signal, for coupling the high-frequency signal in the transmission path to output a third coupled signal through a coupling terminal of the third coupling unit;

and the first coupling switch is respectively connected with the coupling end of the first coupling unit, the coupling end of the second coupling unit, the coupling end of the third coupling unit and the first coupling output port and is used for selectively outputting a first coupling signal, a second coupling signal or a third coupling signal to the first coupling output port.

16. The radio frequency L-PA Mid device of claim 1, wherein the radio frequency L-PA Mid device is further configured with a second coupled output port, a third coupled output port, and a coupled input port; the radio frequency L-PA Mid device further comprises:

the low-frequency coupling unit is arranged in a transmission path of the low-frequency signal and used for coupling the low-frequency signal in the transmission path to output a low-frequency coupling signal through a coupling end of the low-frequency coupling unit;

a plurality of first ends of the second coupling switches are connected with the coupling ends of the low-frequency coupling units, second ends of the second coupling switches are connected with the second coupling output ports, and the second coupling output ports are connected with the coupling input ports through radio frequency lines;

the intermediate frequency coupling unit is arranged in a transmitting path of the intermediate frequency signal and is used for coupling the intermediate frequency signal in the transmitting path to output an intermediate frequency coupling signal through a coupling end of the intermediate frequency coupling unit;

a high-frequency coupling unit, provided in a transmission path of the high-frequency signal, for coupling the high-frequency signal in the transmission path to output a high-frequency coupled signal through a coupling terminal of the high-frequency coupling unit;

and the third coupling switch is respectively connected with the second coupling output port, the coupling end of the intermediate frequency coupling unit, the coupling end of the high frequency coupling unit and the third coupling output port and is used for selectively outputting a low frequency coupling signal, an intermediate frequency coupling signal or a high frequency coupling signal to the third coupling output port.

17. The radio frequency L-PA Mid device of claim 2, further configured with a first round signaling port, a second round signaling port, for implementing SRS functionality;

the second transmitting module further comprises:

the intermediate frequency transmitting circuit is connected with the intermediate frequency transmitting port and is used for receiving the 4G signals of a plurality of intermediate frequency bands and amplifying and filtering the received 4G signals of the intermediate frequency bands;

the high-frequency transmitting circuit is connected with the high-frequency transmitting port and used for receiving the 4G signals and the 5G signals at the high-frequency end and amplifying and filtering the received 4G signals and 5G signals at the high-frequency end;

the radio frequency L-PA Mid device further comprises:

the fourth filtering unit is arranged on a transceiving path of the 5G signal and is used for filtering the received 5G signal;

a plurality of first ends of the eighth switching unit are respectively connected with a plurality of second ends of the medium-high frequency switching circuit and the fourth filtering unit, and a plurality of second ends of the eighth switching unit are respectively connected with the first round signaling port, the second round signaling port and the plurality of antenna ports;

and the control module is respectively connected with the intermediate frequency transmitting circuit, the high frequency transmitting circuit and the medium-high frequency switching circuit and used for controlling the medium-high frequency switching circuit to simultaneously switch on the radio frequency access where the intermediate frequency transmitting circuit and the high frequency transmitting circuit are located so as to support the simultaneous transmission of the 4G signal and the 5G signal of the intermediate frequency band.

18. A radio frequency transceiver system, comprising:

the radio frequency L-PA Mid device of any of claims 1-17;

19. The rf transceiver system of claim 18, wherein the rf L-PA Mid device is further configured with an auxiliary transceiver port for antenna commutation; the radio frequency transceiving system further comprises: a second antenna, a third antenna, a fourth antenna, and

the first diversity receiving module is used for supporting diversity receiving control of 4G signals and 5G signals of a plurality of frequency bands;

two first ends of the second combiner are respectively connected with the two antenna ports of the first diversity receiving module; the second end of the second combiner is connected with the second antenna;

the radio frequency N41 PA Mid device is used for amplifying and filtering the received N41 frequency band signal;

the second diversity receiving module is used for supporting diversity receiving control of 4G signals of a plurality of frequency bands;

the main set receiving module is used for supporting main set receiving control of 4G signals and 5G signals of a plurality of frequency bands;

a first end of the first radio frequency switch is connected with the antenna port of the radio frequency N41 PA Mid device;

the other first end of the first radio frequency switch is connected with the antenna port of the main set receiving module; a plurality of second ends of the first radio frequency switch are respectively and correspondingly connected with an auxiliary transceiving port of the radio frequency L-PA Mid device, an auxiliary transceiving port of the first diversity receiving module and a third antenna;

a first end of the second radio frequency switch is connected with the antenna port of the second diversity receiving module, and the other first end of the second radio frequency switch is connected with a second end of the first radio frequency switch; and the second end of the second radio frequency switch is connected with the fourth antenna.

20. A communication device comprising a radio frequency transceiver system according to any one of claims 18-19.