CN114553250B

CN114553250B - Radio frequency system and communication device

Info

Publication number: CN114553250B
Application number: CN202011344014.7A
Authority: CN
Inventors: 王国龙
Original assignee: Guangdong Oppo Mobile Telecommunications Corp Ltd
Current assignee: Guangdong Oppo Mobile Telecommunications Corp Ltd
Priority date: 2020-11-25
Filing date: 2020-11-25
Publication date: 2023-11-10
Anticipated expiration: 2040-11-25
Also published as: CN114553250A

Abstract

The application provides a radio frequency system and communication equipment, wherein the radio frequency system comprises: a radio frequency transceiver; the antenna group at least comprises a first antenna and a second antenna; the first transceiver module is connected with the radio frequency transceiver and is used for supporting the receiving and transmitting processing of the first radio frequency signal and the receiving processing of the second radio frequency signal; the second transceiver module is used for supporting the receiving and transmitting processing of the second radio frequency signal and the receiving processing of the first radio frequency signal; the combining switching module is respectively connected with the first receiving and transmitting module, the second receiving and transmitting module, the first antenna, the second antenna, the third antenna and the fourth antenna, and is used for selectively conducting radio frequency paths between the first receiving and transmitting module and the second receiving and transmitting module and between the first receiving and transmitting module and the first antenna and between the second receiving and transmitting module and the second antenna respectively so as to support a dual-band independent networking mode of the radio frequency system, and an external B3 frequency band transmitting module is not needed to realize a dual-band NSA mode, so that the integration level of the radio frequency system is greatly improved, and the cost of devices is reduced.

Description

Radio frequency system and communication device

Technical Field

The present application relates to the field of radio frequency technologies, and in particular, to a radio frequency antenna device, a radio frequency system, and a communication device.

Background

With the development and progress of technology, 5G mobile communication technology is gradually beginning to be applied to electronic devices. The 5G mobile communication technology has a communication frequency higher than that of the 4G mobile communication technology. In a general radio frequency system, more than three independent power amplification modules are adopted to carry out transmitting amplification processing on radio frequency signals of different communication modes (such as 4G signals and 5G signals), and the power amplification modules of the radio frequency signals of different communication modes are relatively independent, so that the design cost of the radio frequency system is higher and the occupied area is large.

Disclosure of Invention

The embodiment of the application provides a radio frequency system and communication equipment, which can improve the integration level and reduce the cost.

A radio frequency system comprising:

a radio frequency transceiver;

the antenna group at least comprises a first antenna and a second antenna;

the first transceiver module is connected with the radio frequency transceiver and is used for supporting the receiving and transmitting processing of the first radio frequency signal and the receiving processing of the second radio frequency signal;

the second transceiver module is connected with the radio frequency transceiver and is used for supporting the receiving and transmitting processing of the second radio frequency signal and the receiving processing of the first radio frequency signal;

and the combining switching module is respectively connected with the first transceiver module, the second transceiver module, the first antenna, the second antenna, the third antenna and the fourth antenna, and is used for selectively conducting radio frequency paths between the first transceiver module and the second transceiver module and between the first antenna and the second antenna respectively so as to support a dual-band non-independent networking mode of the radio frequency system.

A communication device comprising a radio frequency system as described above.

The first transceiver module of the radio frequency system and the communication equipment integrates the transmitting path for supporting the first radio frequency signal, and the transmitting path can provide an LTE anchor point so as to support the ENDC combination of B3+N41 in the non-independent networking mode, and an external B3 frequency band transmitting module is not needed to realize the NSA mode of the dual frequency band (middle-high frequency B3+N41), thereby greatly improving the integration level of the radio frequency system and reducing the cost of devices. Meanwhile, the area of the substrate occupied by the radio frequency system can be reduced, for example, the area of 20mm & lt 2 & gt can be saved for the substrate, the power supply and control logic of each device in the radio frequency system are simplified, the layout and wiring of the radio frequency system on the substrate are facilitated, and the communication performance of the radio frequency system can be further improved.

Drawings

In order to more clearly illustrate the embodiments of the application or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described, it being obvious that the drawings in the following description are only some embodiments of the application, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

FIG. 1 is one of the block diagrams of the architecture of a radio frequency system in one embodiment;

FIG. 2 is a second block diagram of an RF system in one embodiment;

FIG. 3 is a third block diagram of an RF system in one embodiment;

FIG. 4 is a fourth block diagram of a radio frequency system in one embodiment;

FIG. 5 is a fifth block diagram of a radio frequency system in one embodiment;

FIG. 6 is one of the block diagrams of the first transceiver module in one embodiment;

FIG. 7 is a second block diagram of a first transceiver module according to one embodiment;

FIG. 8 is a third block diagram of a first transceiver module in one embodiment;

FIG. 9 is a fourth block diagram of a first transceiver module in one embodiment;

FIG. 10 is a block diagram of a radio frequency system in one embodiment;

FIG. 11 is a block diagram of a radio frequency system in one embodiment;

FIG. 12 is a fifth block diagram of a first transceiver module in one embodiment;

FIG. 13 is a sixth block diagram of a first transceiver module in one embodiment;

FIG. 14 is a block diagram of a radio frequency system in one embodiment;

fig. 15 is a block diagram of a radio frequency system in one embodiment.

Detailed Description

In order that the above objects, features and advantages of the application will be readily understood, a more particular description of the application will be rendered by reference to the appended drawings. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present application, and the preferred embodiments of the present application are presented 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. The present application may be embodied in many other forms than described herein and similarly modified by those skilled in the art without departing from the spirit of the application, so that the application is not limited to the specific embodiments disclosed below.

Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include at least one such feature. In the description of the present application, the meaning of "plurality" means at least two, for example, two, three, etc., unless specifically defined otherwise. In the description of the present application, the meaning of "several" means at least one, such as one, two, etc., unless specifically defined otherwise.

The radio frequency system 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 computing device, or other processing devices connected to a wireless modem, and various types of User Equipment (UE) (e.g., a Mobile Station, MS), and so on. For convenience of description, the above-mentioned devices are collectively referred to as communication devices. The network devices may include base stations, access points, and the like.

The radio frequency system in the embodiment of the application can support the fifth generation mobile communication technology (5G or 5G technology for short), and 5G is the latest generation cellular mobile communication technology. 5G is divided into two modes, independent networking (Standalone Access, NA) and dependent networking (Non Standalone Access, NSA) support. The non-independent networking is to anchor the 5G control signaling on the 4G base station, and the independent networking is that the 5G base station is directly connected to the 5G core network, and the control signaling does not depend on the 4G network. In the embodiment of the application, the non-independent networking mode comprises any one of an EN-DC framework, an NE-DC framework and an NGEN-DC framework. Taking an EN-DC mode of a non-independent networking as an example, E is Evolved universal mobile telecommunications system terrestrial radio access (E-UTRA) and represents a 4G radio access of a mobile terminal; n is a New Radio (NR) representing the 5G wireless connection of the mobile terminal; DC is a double connection (Dual Connectivity), representing a double connection of 4G and 5G. In EN-DC mode, based on the 4G core network, the terminal device can implement dual connectivity with both the 4G base station and the 5G base station. Therefore, EN-DC requires that the communication modules implementing 4G and 5G can operate simultaneously. The EN-DC combinations are shown mainly in Table 1, according to the first stage specification requirements of 5G in 3GPP Release-5.

TABLE 1 ENDC combination

5G frequency band	ENDC combination
		N41	B3+N41/B39+N41
N78	B3+N78/B5+N78
		N79	B3+N79

The embodiment of the application provides a radio frequency system. As shown in fig. 1, in one embodiment, the radio frequency system includes a radio frequency transceiver 10, a first transceiver module 20, a second transceiver module 30, a combiner switch module 40, and an antenna group 50. The radio frequency transceiver 10 is connected to the first transceiver module 20, the second transceiver module 30, and the combining switch module 40, and can be used to control the switch control logic of the combining switch module 40, and also can be used to implement the functions of converting between radio frequency signals and baseband signals.

The antenna group 50 may include a first antenna Ant1, a second antenna Ant2. In one embodiment, the antenna group may further include a first antenna, a second antenna, a third antenna, and a fourth antenna. The antennas of antenna group 50 may be formed using any suitable type of antenna. For example, each antenna within antenna group 50 may include an antenna having a resonating element formed from 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, for example, each antenna in the embodiments of the present application may support reception and transmission of 2G signals, 3G signals, 4G LTE signals, and 5G NR signals. In the embodiment of the present application, the type of each antenna in the antenna group 50 is not further limited.

The first transceiver module 20 is configured to support a process of receiving and transmitting a first radio frequency signal and a process of receiving a second radio frequency signal. Specifically, the first radio frequency signal may be a 4G LTE signal, for example, signals in the B3, B5, and B39 frequency bands; the second radio frequency signal may be a 5G NR signal, such as a signal in the N41, N78, N79 frequency bands. That is, the first radio frequency signal and the second radio frequency signal meet the ENDC combining requirement.

In one embodiment, the first transceiver module 20 may be an LFEM (Low noise amplifier front end module, radio frequency low noise amplifier module) device that integrates a first radio frequency signal transmit path (e.g., B3 TX path). That is, the first transceiver module 20 may also support receiving processing of radio frequency signals in a mid-high frequency band, where the radio frequency signals in the mid-high frequency band may at least include signals in frequency bands such as N41 (B41), B7, B40, B39, B34, B1, B4, B66, B25, and B3.

The second transceiver module 30 is configured to support a process of receiving and transmitting the second radio frequency signal and a process of receiving the first radio frequency signal. Specifically, the second transceiver module 30 may be a power amplifier module (Power Amplifier Modules including Duplexers With LNA, L-PA Mid) with a built-in low noise amplifier. The second transceiver module 30 may support the reception and transmission of 4G signals and 5G signals in a plurality of different frequency bands. The plurality of different intermediate frequency band 4G signals may include LTE signals of B1, B3, B25, B34, B66, B39, B30, B7, B40, and B41 frequency bands, and the 5G signals may include at least NR signals of N41 frequency band. Thus, the second transceiver module 30 may be referred to as a Mid-high band power amplifier module (Middle and High Band PA Mid With LNA, MHB L-PA Mid) with a built-in low noise amplifier.

The combining switch module 40 is connected to each antenna in the first transceiver module 20, the second transceiver module 30, and the antenna group 50. The combining switch module 40 is configured to selectively switch on radio frequency paths between the first transceiver module 20 and the second transceiver module 30 and the first antenna Ant1, the second antenna Ant2, the third antenna and the fourth antenna, respectively, so as to support a non-independent networking mode of a dual band (middle-high frequency b3+n41) of the radio frequency system. That is, when the radio frequency system is under the non-independent networking module, the first antenna Ant1 may be used to support the transmission of the first radio frequency signal, the second radio frequency signal, the main set of the second radio frequency signal and the diversity reception of the first radio frequency signal, and the second antenna Ant2 may be used to support the transmission of the first radio frequency signal, the second radio frequency signal, the main set of the first radio frequency signal and the diversity reception of the second radio frequency signal.

Specifically, the radio frequency link path of the first radio frequency signal (e.g., the LTE signal of the B3 band) is as follows:

transmit (TX) path: the radio frequency transceiver 10→the first transceiver module 20 (transmitting circuit) →the combining switching module 40→the second antenna Ant2;

primary set reception (PRX) path: second antenna Ant 2- & gt, combining switching module 40- & gt, first transceiver module 20 (receiving circuit) & gt, radio frequency transceiver 10;

Diversity Reception (DRX) path: first antenna Ant 1- > combiner switch module 40- > second transceiver module 30- > radio frequency transceiver 10.

Specifically, the radio frequency link path of the second radio frequency signal (for example, the NR signal of the N41 band) is as follows:

transmit (TX) path: the radio frequency transceiver 10- & gt the second transceiver module 30- & gt the combining switching module 40- & gt the first antenna Ant1;

primary set reception (PRX) path: first antenna Ant 1- & gt, combining switching module 40- & gt, second transceiver module 30- & gt, radio frequency transceiver 10;

diversity Reception (DRX) path: second antenna Ant2→combiner switch module 40→first transceiver module 20 (receiving circuit) →radio frequency transceiver 10.

The first transceiver module 20 in the radio frequency system integrates a transmitting path for supporting the first radio frequency signal, and the transmitting path can provide an LTE anchor point, so that the ENDC combination of b3+n41 in the non-independent networking mode can be supported, and an external B3 frequency band transmitting module is not needed to realize the NSA mode of dual frequency bands (middle-high frequency b3+n41), thereby greatly improving the integration level of the radio frequency system and reducing the cost of devices. Meanwhile, the area of the substrate occupied by the radio frequency system can be reduced, for example, the area of 20mm & lt 2 & gt can be saved for the substrate, the power supply and control logic of each device in the radio frequency system are simplified, the layout and wiring of the radio frequency system on the substrate are facilitated, and the communication performance of the radio frequency system can be further improved.

As shown in fig. 2, in one embodiment, the first transceiver module 20 may be understood as a package structure, and the first transceiver module 20 is configured with a transmit port RFIN and a plurality of receive ports (e.g., LNA OUT MHB1, LNA OUT MHB2, etc.) for connecting the radio frequency transceiver 10, and an antenna port MHB ANT for connecting an antenna. The transmit port RFIN, the receive port LNA OUT MHB, and the antenna port MHB ANT may be understood as rf pin terminals of the rf antenna device for connection with external devices. In the embodiment of the present application, the number of the antenna ports MHB ANT of the first transceiver module 20 may be one or two, and when the number of the antenna ports MHB ANT is two, they may be respectively denoted as a first antenna port MHB ANT1 and a second antenna port MHB ANT2.

The first transceiver module 20 includes a transmitting circuit 210, a first receiving circuit 220, and a switching circuit 230. In this embodiment, the transmitting port RFIN, the transmitting circuit 210, the switch circuit 230, and the antenna port MHB ANT may form a transmitting path of the first radio frequency signal. The input end of the transmitting circuit 210 is connected to the transmitting port RFIN, and is used for supporting the transmission amplification of the first radio frequency signal; the multiple output terminals of the first receiving circuit 220 are connected to the multiple receiving ports LNA OUT MHB in a one-to-one correspondence manner, so as to support the receiving amplification of the first radio frequency signal and the second radio frequency signal.

The first ends of the switch circuit 230 are respectively connected to the output end of the transmitting circuit 210 and the input end of the first receiving circuit 220 in a one-to-one correspondence manner, and the second ends of the switch circuit 230 are respectively connected to the first antenna port MHB ANT1 and the second antenna port MHB ANT2, so as to selectively conduct the transmitting path of the first radio frequency signal and simultaneously conduct the receiving paths of the first radio frequency signal and the second radio frequency signal. The two second ends of the switch circuit 230 may be connected to the first antenna Ant1 port and the second antenna port MHB Ant2 of the first transceiver module 20, respectively, so that it may be further ensured that the radio frequency system may support the diversity receiving function of the first radio frequency signal and the diversity receiving function of the second radio frequency signal at the same time.

In one embodiment, the second transceiver module 30 is configured with two antenna ports ANT1. Wherein, the combining switching module 40 includes: a first combiner 410 and a second combiner 420. Specifically, the two first ends of the first combiner 410 are respectively connected to the two antenna ports ANT1 and ANT2 of the second transceiver module 30 in a one-to-one correspondence, and the second end of the first combiner 410 is connected to the first antenna ANT1. Two first ends of the second combiner 420 are respectively connected with a first antenna port MHB ANT1 and a second antenna port MHB ANT2 of the first transceiver module 20 in a one-to-one correspondence manner, and a second end of the second combiner 420 is connected with the second antenna ANT 2; the first switching unit 410 is also connected to the transceiving port MHB TRX 1.

Specifically, taking the first radio frequency signal as the LTE signal in the B3 frequency band and the second radio frequency signal as the NR signal in the N41 frequency band as an example, the radio frequency link paths of the radio frequency signals are described as follows:

radio frequency link path of first radio frequency signal

TX path: radio frequency transceiver 10→transmit port rfin→transmit circuit 210→first antenna port MHB ANT1 of first transceiver module 20→path10→second combiner 420→second antenna ANT2;

PRX pathway: second antenna Ant 2- & gt second combiner 420- & gt path 10- & gt first antenna port MHB ANT1 of first transceiver module 20- & gt first receiving circuit 220- & gt receiving port LNA OUT MHB 1- & gt radio frequency transceiver 10;

DRX path: first antenna Ant1→first combiner 410→path1→antenna port ANT1 of the second transceiver module 30→radio frequency transceiver 10.

Radio frequency link path of second radio frequency signal

TX path: radio frequency transceiver 10→second transceiver module 30→path2→first combiner 410→first antenna Ant1;

PRX pathway: first antenna Ant 1- & gt first combiner 410- & gt path 2- & gt second transceiver module 30- & gt radio frequency transceiver 10;

DRX path: second antenna Ant2→second combiner 420→path11→second antenna port MHB ANT2 of first transceiver module 20→first receiving circuit 220→receiving port LNA OUT MHB1→radio frequency transceiver 10.

As shown in fig. 3, in one embodiment, the first transceiver module 20 is further configured with a transceiver port MHB TRX1, and the antenna group 50 further includes a third antenna Ant3 and a fourth antenna Ant4. The combining switching module 40 includes: the first switching unit 430. The first end of the first switch unit 430 is connected to an antenna port ANT2 of the second transceiver module, a second end of the first switch unit 430 is connected to a first end of the first combiner, another second end of the first switch unit 430 is connected to a transceiver port MHB TRX1 of the first transceiver module 20, another second end of the first switch unit 430 is connected to a third antenna ANT3, and another second end of the first switch unit 430 is connected to a fourth antenna ANT4 to support the second radio frequency signal to be transmitted in a round trip between the first antenna ANT1, the second antenna ANT2, the third antenna ANT3 and the fourth antenna ANT4 in a non-independent networking mode.

Specifically, the first switching unit 430 may be an SP4T switch. Specifically, a single terminal of the SP4T switch is connected to the antenna port ANT2 of the second transceiver module 30, a selection terminal of the SP4T switch is connected to the first combiner 410, another selection terminal of the SP4T switch is connected to the transceiver port MHB TRX1 of the first transceiver module 20, another selection terminal of the SP4T switch is connected to the third antenna ANT3, and another selection terminal of the SP4T switch is connected to the fourth antenna ANT4. By controlling the first switching unit 430, the second radio frequency signal (for example, NR signal of N41 band) can be transmitted between the first antenna Ant1, the second antenna Ant2, the third antenna Ant3 and the fourth antenna Ant4, so as to support the 1t4 SRS function in independent networking and non-independent networking modes.

Taking the second radio frequency signal as an NR signal of an N41 frequency band as an example, the SRS working principle of the second radio frequency signal in the non-independent networking mode is described:

the radio frequency transceiver 10- & gt the second transceiver module 30- & gt the antenna port ANT2- & gt the path 2- & gt the first switch unit 430- & gt the path 3- & gt the first combiner 410- & gt the first antenna Ant1 of the second transceiver module 30 realize the SRS function; the SRS function is realized by the first switching unit 430→path4→the transceiving port MHB trx1 of the first transceiving module 20→the switching circuit 230→the second antenna port MHB ANT2→path11→the second combiner 420→the second antenna ANT 2; first switching element 430→path5→third antenna Ant3; first switching element 430→path6→fourth antenna Ant4. The SRS operation principle of the N41 SA mode is similar to that of the NSA mode, and will not be described herein.

The first transceiver module 20 of the radio frequency system integrates a transmitting path for supporting the first radio frequency signal, and the transmitting path can provide an LTE anchor point, so that the ENDC combination of b3+n41 in the non-independent networking mode can be supported, and an external B3 frequency band transmitting module is not needed to realize the NSA mode of dual frequency bands (middle-high frequency b3+n41), thereby greatly improving the integration level of the radio frequency system and reducing the cost of devices. Meanwhile, SRS functions of 1T4R can be supported in independent networking and non-independent networking modes, and throughput of the radio frequency system can be further improved, so that communication performance of the radio frequency system is improved.

As shown in fig. 4, in one embodiment, the first transceiver module 20 is configured with a transmit port RFIN, an antenna port MHB ANT, an auxiliary port LNA AUX MHB, and a plurality of receive ports LNA OUT MHB. Wherein the first transceiver module 20 includes: a transmitting circuit 210, a first receiving circuit 220, and a switching circuit 230. An input end of the transmitting circuit 210 is connected with the transmitting port RFIN and is used for supporting the transmitting amplification of the first radio frequency signal; the multiple output ends of the first receiving circuit 220 are connected to the multiple receiving ports LNA OUT MHB in a one-to-one correspondence, and an input end of the first receiving circuit 220 is connected to the auxiliary port LNA AUX MHB for supporting the receiving and amplifying of the first radio frequency signal and the second radio frequency signal.

The first ends of the switch circuit 230 are respectively connected to the output end of the transmitting circuit 210 and the remaining input end of the first receiving circuit 220 in a one-to-one correspondence, and the second end of the switch circuit 230 is connected to the antenna port MHB ANT. The second end of the switch circuit 230 is connected to an antenna port MHB ANT of the first transceiver module 20, where the antenna port MHB ANT may be used to support diversity reception of the second radio frequency signal, and the auxiliary port LNA AUX MHB may be used to support main set reception of the first radio frequency signal. The antenna port MHB ANT and the auxiliary port LNA AUX MHB can output the received first radio frequency signal and the second radio frequency signal to the first receiving circuit 220 for processing, so that it can be further ensured that the radio frequency system can support the diversity receiving function of the main set of the first radio frequency signal and the diversity receiving function of the second radio frequency signal at the same time.

In one embodiment, the second transceiver module 30 is configured with two antenna ports ANT1, ANT2. Wherein, the combining switching module 40 includes: second switching unit 460 third switching unit 470 third and fourth combiners 440 and 450. Wherein, two first ends of the third combiner 440 are respectively connected with two antenna ports ANT1 and ANT2 of the second transceiver module 30 in a one-to-one correspondence, and a second end of the second switch unit 460 of the third combiner 440 is connected with the first antenna ANT 1; the two first ends of the fourth combiner 450 are respectively connected to the antenna port MHB ANT and the auxiliary port LNA AUX MHB of the first transceiver module 20 in a one-to-one correspondence manner, and the second end of the fourth combiner 450 is connected to the second switch unit 460 of the third switch unit 470 via the third switch unit 470 and the second antenna ANT2.

radio frequency link path of first radio frequency signal

TX path: radio frequency transceiver 10→transmit port rfin→transmit circuit 210→first antenna port MHB ANT of first transceiver module 20→path11→fourth combiner 450→third switch unit 470 second antenna ANT2;

PRX pathway: second antenna Ant2→third switching unit 470 fourth combiner 450→path12→auxiliary port LNA AUX MHB of first transceiver module 20→first receiving circuit 220→receiving port LNA OUT MHB1→radio frequency transceiver 10;

DRX path: first antenna Ant 1- > third combiner 440- > path 1- > second transceiver module 30- > radio frequency transceiver 10.

Radio frequency link path of second radio frequency signal

TX path: radio frequency transceiver 10→second transceiver module 30→path2→third combiner 440→first antenna Ant1;

PRX pathway: first antenna Ant 1- & gt third combiner 440- & gt path 2- & gt second transceiver module 30- & gt radio frequency transceiver 10;

DRX path: the second antenna Ant2→the third switching unit 470→the fourth combiner 450→path11→the antenna port MHB Ant of the first transceiver module 20→the first receiving circuit 220→the receiving port LNA OUT MHB1→the radio frequency transceiver 10.

As shown in fig. 5, in one embodiment, the antenna group 50 further includes a third antenna Ant3 and a fourth antenna Ant4. The combining switching module 40 further includes a second switching unit 460 and a third switching unit 470. The single terminal of the second switching unit 460 is connected to the antenna port ANT2 of the second transceiver module 30, one selection end of the second switching unit 460 is connected to the third combiner 440, the other selection end of the second switching unit 460 is connected to one selection end of the third switching unit 470, the other selection end of the third switching unit 470 is connected to the second end of the fourth combiner 450, and the single terminal of the third switching unit 470 is connected to the second antenna ANT 2; the further selection end of the second switch unit 460 is connected to the third antenna Ant3, and the further selection end of the second switch unit 460 is connected to the fourth antenna Ant4, so as to support the antenna transmission of the second radio frequency signal among the first antenna Ant1, the second antenna Ant2, the third antenna Ant3 and the fourth antenna Ant4 in the non-independent networking mode.

Specifically, the second switching unit 460 may be an SP4T switch, and the third switching unit 470 may be an SPDT switch. Specifically, a single terminal of the SP4T switch is connected to the antenna port ANT2 of the second transceiver module 30, a selection terminal of the SP4T switch is connected to the third combiner 440, another selection terminal of the SP4T switch is connected to a selection terminal of the SPDT switch, another selection terminal of the SPDT switch is connected to the second terminal of the fourth combiner 450, and a single terminal of the SPDT switch is connected to the second antenna ANT 2; the further selection terminal of the SP4T switch is connected to the third antenna Ant3 and the further selection terminal of the SP4T switch is connected to the fourth antenna Ant4.

By controlling the second switching unit 460 and the third switching unit 470, the second radio frequency signal (for example, the NR signal in the N41 band) can be transmitted between the first antenna Ant1, the second antenna Ant2, the third antenna Ant3 and the fourth antenna Ant4, so as to support the 1t4 SRS function in the independent networking and the non-independent networking modes.

the second radio frequency signal- & gt the second transceiver module 30- & gt the antenna port ANT2- & gt the path 2- & gt the second switch unit 460- & gt the path 3- & gt the third combiner 440- & gt the first antenna Ant1 of the second transceiver module 30, thereby realizing the SRS function; second switching unit 460→path4→third switching unit 470→path7→second antenna Ant2, realizing SRS function; second switching unit 460→path5→third antenna Ant3; second switching element 460→path6→fourth antenna Ant4. The SRS operation principle of the N41 SA mode is similar to that of the NSA mode, and will not be described herein.

The first transceiver module 20 of the radio frequency system in this embodiment integrates a transmission path for supporting a first radio frequency signal, where the transmission path may provide an LTE anchor point, and further may support ENDC combination of b3+n41 in a non-independent networking mode, without an external B3 band transmission module to implement a NSA mode of dual bands (middle-high frequency b3+n41), thereby greatly improving the integration level of the radio frequency system and reducing the cost of devices. Meanwhile, SRS functions of 1T4R can be supported in independent networking and non-independent networking modes, and throughput of the radio frequency system can be further improved, so that communication performance of the radio frequency system is improved.

As shown in fig. 6 and 7, in one embodiment, the transmitting circuit 210 in any of the foregoing embodiments includes a power amplifier 211 and a first filtering unit 212. The input end of the power amplifier 211 is connected with the emission port RFIN and is used for amplifying the first radio frequency signal; the first filtering unit 212 is connected to the output end of the power amplifier 211 and the switch circuit 230, and is configured to filter the amplified first radio frequency signal, and output the filtered first radio frequency signal to the switch circuit 230. Specifically, the first filtering unit 212 only allows the radio frequency signal of the preset frequency band to pass, for example, only allows the LTE signal of the B3 frequency band to pass. The first filtering unit 212 may include a filter, which may be a band pass filter, or the like. The power amplifier 211 is configured to amplify the power of the first rf signal, and the first filter unit 212 is configured to filter the first rf signal to output a clean first rf signal without stray waves to the switch circuit 230.

IN one embodiment, the first transceiver module 20 is further configured with a coupling input port FBRX IN and a coupling output port FBRX OUT, wherein the transmitting circuit 210 further comprises a coupling unit 213. The coupling unit 213 is coupled to the output end of the power amplifier 211 and the input end of the first filtering unit 212, and is configured to couple the first radio frequency signal, and the coupling output port FBRX OUT outputs a coupling signal. Wherein the coupling signal comprises a forward coupling signal and a reverse coupling signal. Based on the forward coupling signal output by the coupling output port FBRX OUT, forward power information of the first radio frequency signal can be detected; the reverse power information of the first radio frequency signal may be correspondingly detected based on the reverse coupling signal output from the coupling output port FBRX OUT.

IN one embodiment, the FBRX IN may be further configured to receive the external coupling signal output by the other transceiver module, and transmit the received external coupling signal to the rf transceiver 10 through the FBRX OUT, so as to simplify a transmission path of the coupling signal.

As shown in fig. 8 and 9, in one embodiment, the first receiving circuit 220 in any of the foregoing embodiments is further configured to support receiving and amplifying processing of multiple third radio frequency signals in the mid-to-high frequency band. The third radio frequency signal may be a medium-high frequency 4G LTE signal other than the first radio frequency signal and the second radio frequency signal, for example, may be a signal in a frequency band such as B7, B40, B39, B34, B1, B4, B66, B25, or the like.

Specifically, the first receiving circuit 220 includes a plurality of low noise amplifiers LNA, a plurality of radio frequency switches SP3T, and a plurality of second filtering units 221. The input ends of the low-noise amplifiers LNA are connected with the first ends of the radio frequency switches SP3T in a one-to-one correspondence mode, and the output ends of the low-noise amplifiers LNA are connected with the receiving ports LNA OUT MHB in a one-to-one correspondence mode. The second ends of the radio frequency switch SP3T are respectively connected to the second filtering units 221, or the second ends of the radio frequency switch SP3T are respectively connected to the auxiliary ports LNAAUX MHB. The first receiving circuit 220 may include four low noise amplifiers LNA, four radio frequency switches SP3T, and eight second filtering units 221, for example. Each second filtering unit 221 is configured to filter the third radio frequency signal, and each second filtering unit is configured to allow the radio frequency signal with the preset frequency band to pass through the third radio frequency signal.

The switch circuit 230 in the embodiment of the present application may be an SPnT switch or a DPnT switch. The switch circuit 230 may be an SP8T switch or a DP8T switch, for example. The number of n may be set by the numbers of the first filtering units 212 and the second filtering units 221, and it should be noted that, in the embodiment of the present application, the number of switches and the types of switches specifically included in the switch circuit 230 are not further limited.

As shown in fig. 10 and 11, in one embodiment, the first transceiver module 20 according to any of the foregoing embodiments is further configured to include a first receiving module 60 and a second receiving module 70. The first receiving module 60 is connected to the rf transceiver 10 and the combining switch module 40, respectively, and is configured to support MIMO main set receiving processing of the first rf signal and the second rf signal. For example, the first receiving module 60 may implement MIMO main set receiving processing for signals in frequency bands such as B7, B34, B39, B40, N41 (B41), B1, B2, and B3.

The second receiving module 70 is connected to the rf transceiver 10 and the combining switch module 40, respectively, and is configured to support MIMO diversity receiving processing on the first rf signal and the second rf signal. For example, the ER receiving module may implement MIMO diversity receiving processing for signals in frequency bands such as B7, B34, B39, B40, N41 (B41), B1, B2, and B3.

Specifically, the combiner switch module further includes a fourth switch unit 480 and a fifth switch unit 490 on the basis of fig. 6 and 7. For example, the fourth switching unit 480 and the fifth switching unit 490 may be SPDT switches.

One selection end of the fourth switch unit 480 is connected to the first receiving module 60, the other selection end of the fourth switch unit 480 is connected to a second end of the first switch unit 430, and a single terminal of the fourth switch unit 480 is connected to the third antenna Ant 3. One selection terminal of the fifth switching unit 490 is connected to the second receiving module 70, the other selection terminal of the fifth switching unit 490 is connected to the other second terminal of the first switching unit 430, and a single terminal of the fifth switching unit 490 is connected to the fourth antenna Ant 4.

Based on the radio frequency system as shown in fig. 10 and 11, the ENDC combination of b3+n41 in the non-independent networking mode can be supported, and an external B3 frequency band transmitting module is not needed to realize the NSA mode of the dual frequency band (middle-high frequency b3+n41), so that the integration level of the radio frequency system is greatly improved, and the cost of devices is reduced. Meanwhile, the SRS function of 1T4R can be supported in independent networking and non-independent networking modes, 4 x 4MIMO of the 4G LTE signals with medium and high frequencies can be supported, and the throughput of the radio frequency system can be further improved, so that the communication performance of the radio frequency system is improved.

As shown in fig. 12 and 13, in one embodiment, the first transceiver module 20 is further configured with a third antenna port LB ANT, wherein the first transceiver module 20 further comprises a second receiving circuit 240. The input end of the second receiving circuit 240 is connected to the third antenna port LB ANT, and the output end of the second receiving circuit 240 is connected to the receiving port LNA OUT MHB, for supporting receiving and amplifying the plurality of fourth radio frequency signals in the low frequency band. The plurality of fourth radio frequency signals in the low frequency band may include at least 4G LTE signals in the frequency bands such as B8, B26, etc.

In one embodiment, the first transceiver module 20 further includes a first control unit 251 and a second control unit 252. The first control unit 251 may be connected to the power amplifier 211, the switch circuit 230, and each switch in the first transceiver module 20, and the first control unit 251 may control the power amplifier 211 to amplify the first rf signal, and may also be used to control the switch states of the switch circuit 230 and each switch. The second control unit 252 may be connected to each low noise amplifier LNA in the first transceiver module 20 for controlling the gain factor of each low noise amplifier LNA.

In one embodiment, the first control unit 251 and the second control unit 252 may be a mobile industry processor interface (Mobile Industry Processor Interface, MIPI) -radio frequency front end control interface (RF Front End Control Interface, RFFE) control unit or a radio frequency front end control interface (RF Front End Control Interface, RFFE) control unit, which conforms to the control protocol of the RFFE bus. When the first control unit 251 and the second control unit 252 are MIPI-RFFE control units or RFFE control units, the first transceiver module 20 thereof is further configured with an input pin CLK of a clock signal, an input or bi-directional pin sdata of a single/bi-directional data signal, a power supply pin VDD, a reference voltage pin VIO, and so on.

As shown in fig. 14 and 15, in one embodiment, the radio frequency system further includes a third transceiver module 80 based on the first transceiver module 20 shown in fig. 12 and 13. The third transceiver module 80 is connected to the rf transceiver 10 and the combiner switch module 40, respectively, and is configured to support the processing of receiving and amplifying the plurality of fourth rf signals in the low frequency band. When the radio frequency system includes the first transceiver module 20, the connection relationship between the combiner and the switch unit in the corresponding reasonable switching module can be adaptively adjusted.

Specifically, as shown in fig. 14, the first combiner 410 and the second combiner 420 in the radio frequency system are all three-frequency combiners, wherein three input ports of the first combiner 410 can be respectively connected with the antenna port LB ANT of the third transceiver module 80, the antenna port ANT1 of the second transceiver module 30, and the first switch unit 430. The three input ports of the second combiner 420 may be connected to the first, second, and third antenna ports MHB ANT1, MHB ANT2, LB ANT of the first transceiver module 20, respectively.

Specifically, as shown in fig. 15, the combiner switching module 40 further includes a fifth combiner 492, wherein the third combiner 440 is a three-frequency combiner, and the fourth combiner 450 and the fifth combiner 492 are dual-frequency combiners. The three input ports of the third combiner 440 may be connected to the antenna port LB ANT of the third transceiver module 80, the antenna port MHB ANT of the second transceiver module 30, and the first switching unit 430, respectively. The two input ports of the fifth combiner 492 may be connected to the third antenna port LB ANT of the first transceiver module 20 and the single terminal of the third switching unit 470, respectively, and the second end of the fifth combiner 492 is connected to the second antenna ANT 2.

In the embodiment of the application, for the 5G signal of the N41 frequency band, only one transmitting path (1 TX) is provided for the N41 frequency band. In NSA mode, B3 band and N41 band are combined as ENDC. Based on the radio frequency system as shown in fig. 14, the radio frequency link paths of the B3 band and the N41 band in NSA mode and the SRS operation principle of the N41 band are briefly described:

radio frequency link path of B3 frequency band signal

TX path: radio frequency transceiver 10→transmit port rfin→power amplifier 211→first filter unit 212→switch circuit 230→first antenna port MHB ant1→path10→second combiner 420→second antenna ANT2 of first transceiver module 20.

PRX pathway: the second antenna Ant 2- & gt the second combiner 420- & gt the path 10- & gt the first antenna port MHB ANT1 of the first transceiver module 20- & gt the switching circuit 230- & gt the second filtering unit 221- & gt the radio frequency switch SP3T#3- & gt the low noise amplifier LNA 3- & gt 4P4T switch- & gt the receiving port LNA OUT MHB- & gt the radio frequency transceiver 10.

DRX path: first antenna Ant1→first combiner 410→path1→second transceiver module 30→radio frequency transceiver 10.

Radio frequency link path of N41 frequency band signal

TX path: the radio frequency transceiver 10→the second transceiver module 30→the path2→the first switch unit 430→the path3→the first combiner 410→the first antenna Ant1.

PRX pathway: first antenna Ant 1- > first combiner 410- > path 3- > first switching unit 430- > path 2- > second transceiver module 30- > radio frequency transceiver 10.

DRX path: second antenna Ant 2- & gt second combiner 420- & gt path 11- & gt second antenna port MHB ANT2- & gt switching circuit 230- & gt second filtering unit 221- & gt radio frequency switch SP3T#1- & gt low noise amplifier LNA 1- & gt 4P4T switch- & gt receiving port LNA OUT MHB 1- & gt radio frequency transceiver 10.

PRX MIMO path: third antenna Ant3→Path8→fourth switching unit 480→Path12→antenna port MHB ANT of first receiving module 60→receiving port of first receiving module 60→radio frequency transceiver 10.

DRX MIMO path: fourth antenna Ant 4-path 9-fifth switching unit 490-path 12-antenna port MHB ANT of second receiving module 70-receiving port of second receiving module 70-radio frequency transceiver 10.

SRS working path of N41 frequency band signal

The second transceiver module 30→the antenna port ant2→path2→the first switch unit 430→path3→the first combiner 410→the first antenna ANT1 of the second transceiver module 30, realizing the SRS function; the SRS function is realized by the first switching unit 430→path4→the transceiving port MHB trx1 of the first transceiving module 20→the switching circuit 230→the second antenna port MHB ANT2→path11→the second combiner 420→the second antenna ANT 2; first switching unit 430→path5→fourth switching unit 480→path8→third antenna Ant3; first switching unit 430→path6→fifth switching unit 490→path9→fourth antenna Ant4. The SRS operation principle of the N41SA mode is similar to that of the NSA mode, and the SRS paths in the NSA and SA modes are shown in table 2.

TABLE 2SRS detailed Path configuration Table

	N41 NSA	N41 SA
			Channel0	Path2->Path3	Path2->Path3
Channel1	Path2->Path4->Path11	Path2->Path4->Path11
			Channel2	Path2->Path5->Path8	Path2->Path5->Path8
Channel3	Path2->Path6->Path9	Path2->Path6->Path9

In table 2, channel0, channel1, channel2, and Channel3 are transmission path paths for alternate antenna transmission, respectively.

Based on the radio frequency system as shown in fig. 15, the radio frequency link paths of the B3 band and the N41 band in NSA mode and the SRS operation principle of the N41 band are briefly described:

radio frequency link path of B3 frequency band signal

TX path: the radio frequency transceiver 10→the transmitting port rfin→the power amplifier 211→the first filter unit 212→the switching circuit 230→the first antenna port MHB ANT1MHB ANT of the first transceiver module 20→the path11→the fourth combiner 450→the path10→the third switching unit 470→the path7→the fifth combiner 492→the second antenna ANT2.

PRX pathway: second antenna Ant 2- & gt fifth combiner 492- & gt path 7- & gt third switching unit 470- & gt path 10- & gt fourth combiner 450- & gt path 12- & gt auxiliary port LNA AUX MHB of first transceiver module 20- & gt radio frequency switch S3T#4- & gt low noise amplifier LNA 4- & gt 4P4T switch- & gt receiving port LNA OUT MHB 4- & gt radio frequency transceiver 10;

Radio frequency link path of N41 frequency band signal

TX path: the radio frequency transceiver 10- > the second transceiver module 30- > the path 2- > the first switching unit 430- > the path 3- > the third combiner 440- > the first antenna Ant1;

PRX pathway: first antenna Ant 1- & gt third combiner 440- & gt path 3- & gt first switch unit 430- & gt path 2- & gt second transceiver module 30- & gt radio frequency transceiver 10;

DRX path: second antenna Ant 2- & gt fifth combiner 492- & gt path 7- & gt third switching unit 470- & gt path 10- & gt fourth combiner 450- & gt path 11- & gt antenna port MHB ANT of first transceiver module 20- & gt switching circuit 230- & gt second filtering unit 221- & gt radio frequency switch SP3T#1- & gt low noise amplifier LNA 1- & gt 4P4T switch- & gt receiving port LNA OUT MHB 1- & gt radio frequency transceiver 10.

PRX MIMO path: third antenna Ant3→Path8→fourth switching unit 480→Path13→antenna port MHB ANT of first receiving module 60→receiving port of first receiving module 60→radio frequency transceiver 10.

DRX MIMO path: fourth antenna Ant 4-path 9-fifth switching unit 490-path 14-antenna port MHB ANT of second receiving module 70-receiving port of second receiving module 70-radio frequency transceiver 10.

SRS working path of N41 frequency band signal

The second transceiver module 30→the antenna port ant2→path2→the second switch unit 460→path3→the third combiner 440→the first antenna ANT1 of the second transceiver module 30, realizing the SRS function; the second switching unit 460- & gt path 4- & gt the third switching unit 470- & gt the fourth combiner 450- & gt the second antenna Ant2, thereby realizing the SRS function; second switching unit 460→path5→fourth switching unit 480→path8→third antenna Ant3; first switching unit 430→path6→fifth switching unit 490→path9→fourth antenna Ant4. The SRS operation principle of the N41 SA mode is similar to that of the NSA mode, and will not be described herein. The SRS paths in NSA and SA modes are shown in table 3.

TABLE 3 SRS detailed Path configuration Table

	N41 NSA	N41 SA
			Channel0	Path2->Path3	Path2->Path3
Channel1	Path2->Path4->Path7	Path2->Path4->Path7
			Channel2	Path2->Path5->Path8	Path2->Path5->Path8
Channel3	Path2->Path6->Path9	Path2->Path6->Path9

In table 3, channel0, channel1, channel2, and Channel3 are transmission path paths for alternate antenna transmission, respectively.

Based on the radio frequency system as shown in fig. 14 and 15, the ENDC combination of b3+n41 in the non-independent networking mode can be supported, and an external B3 frequency band transmitting module is not needed to realize the NSA mode of dual frequency bands (middle-high frequency b3+n41), so that the integration level of the radio frequency system is greatly improved, the area of each device in the radio frequency system occupied by a substrate is reduced, and the cost of the device is reduced. Meanwhile, the SRS function of 1T4R can be supported in independent networking and non-independent networking modes, 4 x 4MIMO of the 4G LTE signals with medium and high frequencies can be supported, and the throughput of the radio frequency system can be further improved, so that the communication performance of the radio frequency system is improved.

The embodiment of the application also provides communication equipment, which comprises the radio frequency system in any embodiment, and by arranging the radio frequency system on the communication equipment, the ENDC combination of B3+N41 in the non-independent networking mode can be supported, and an external B3 frequency band transmitting module is not needed to realize the NSA mode of dual frequency bands (medium-high frequency B3+N41), so that the integration level of the radio frequency system is greatly improved, the area of each device in the radio frequency system occupied by a substrate is reduced, and the cost of the device is reduced. Meanwhile, the SRS function of 1T4R can be supported in independent networking and non-independent networking modes, 4 x 4MIMO of the 4G LTE signals with medium and high frequencies can be supported, and the throughput of the radio frequency system can be further improved, so that the communication performance of the radio frequency system is improved.

The foregoing examples illustrate only a few embodiments of the application, which are described in detail and are not to be construed as limiting the scope of the application. It should be noted that it will be apparent to those skilled in the art that several variations and modifications can be made without departing from the spirit of the application, which are all within the scope of the application. Accordingly, the scope of protection of the present application is to be determined by the appended claims.

Claims

1. A radio frequency system, comprising:

a radio frequency transceiver;

the antenna group at least comprises a first antenna and a second antenna;

the first transceiver module is connected with the radio frequency transceiver and is used for supporting the receiving and transmitting processing of the first radio frequency signal and the receiving processing of the second radio frequency signal; wherein,

the first transceiver module is configured with a transmit port, a first antenna port, a second antenna port, and a plurality of receive ports, wherein the first transceiver module comprises:

the input end of the transmitting circuit is connected with the transmitting port and is used for supporting the transmitting amplification of the first radio frequency signal;

the first receiving circuit is connected with a plurality of receiving ports in a one-to-one correspondence manner, and is used for supporting the receiving amplification of the first radio frequency signal and the second radio frequency signal;

The first ends of the switch circuits are respectively connected with the output end of the transmitting circuit and the input ends of the first receiving circuit in a one-to-one correspondence manner, and the two second ends of the switch circuits are respectively connected with the first antenna port and the second antenna port and are used for selectively conducting the transmitting path of the first radio frequency signal and simultaneously conducting the receiving paths of the first radio frequency signal and the second radio frequency signal;

and the combining switching module is respectively connected with the first transceiver module, the second transceiver module, the first antenna and the second antenna and is used for selectively conducting radio frequency paths between the first transceiver module and the second transceiver module and between the first antenna and the second antenna respectively so as to support a dual-band non-independent networking mode of the radio frequency system.

2. The radio frequency system of claim 1, wherein the second transceiver module is configured with two antenna ports, and wherein the combiner switch module comprises: a first combiner and a second combiner, wherein,

Two first ends of the first combiner are respectively connected with two antenna ports of the second transceiver module in a one-to-one correspondence manner, and a second end of the first combiner is connected with the first antenna;

two first ends of the second combiner are respectively connected with the first antenna port and the second antenna port of the first transceiver module in a one-to-one correspondence manner, and a second end of the second combiner is connected with the second antenna.

3. The radio frequency system according to claim 2, wherein the first transceiver module is further configured with a transceiver port, the antenna group further comprises a third antenna and a fourth antenna, the combining switch module further comprises a first switch unit, wherein a first end of the first switch unit is connected to an antenna end of the second transceiver module, a second end of the first switch unit is connected to a first end of the first combiner, another second end of the first switch unit is connected to the transceiver port of the first transceiver module, another second end of the first switch unit is connected to the third antenna, and another second end of the first switch unit is connected to the fourth antenna to support a wheel of a second radio frequency signal between the first antenna, the second antenna, the third antenna, and the fourth antenna in a non-independent networking mode.

4. The radio frequency system of claim 1, wherein the first transceiver module is configured with a transmit port, an antenna port, an auxiliary port, a plurality of receive ports, wherein the first transceiver module comprises:

the first receiving circuit is characterized in that a plurality of output ends of the first receiving circuit are connected with a plurality of receiving ports in a one-to-one correspondence manner, and an input end of the first receiving circuit is connected with an auxiliary port and is used for supporting the receiving amplification of the first radio frequency signal and the second radio frequency signal;

and the second ends of the switch circuits are connected with the antenna ports.

5. The radio frequency system of claim 4, wherein the second transceiver module is configured with two antenna ports, and wherein the combiner switch module comprises: a third combiner and a fourth combiner, wherein,

two first ends of the third combiner are respectively connected with two antenna ports of the second transceiver module in a one-to-one correspondence manner, and a second end of the third combiner is connected with the first antenna;

Two first ends of the fourth combiner are respectively connected with the antenna ports and the auxiliary ports of the first transceiver module in a one-to-one correspondence manner, and a second end of the fourth combiner is connected with the second antenna.

6. The radio frequency system according to claim 5, wherein the antenna group further comprises a third antenna, a fourth antenna, and the combining switch module further comprises a second switch unit and a third switch unit; the single terminal of the second switch unit is connected with an antenna port of the second transceiver module, one selection end of the second switch unit is connected with the third combiner, the other selection end of the second switch unit is connected with one selection end of the third switch unit, the other selection end of the third switch unit is connected with the second end of the fourth combiner, and a single terminal of the third switch unit is connected with the second antenna; the second switch unit has a selection end connected with the third antenna, and a selection end connected with the fourth antenna to support the rotation of the second radio frequency signal among the first antenna, the second antenna, the third antenna and the fourth antenna in the non-independent networking mode.

7. The radio frequency system according to any one of claims 1-6, wherein the transmit circuit comprises:

the input end of the power amplifier is connected with the transmitting port and is used for amplifying the first radio frequency signal;

the first filtering unit is respectively connected with the output end of the power amplifier and the switch circuit, and is used for filtering the amplified first radio frequency signal and outputting the filtered first radio frequency signal to the switch circuit.

8. The radio frequency system of claim 7, wherein the first transceiver module is further configured with a coupled input port and a coupled output port, wherein the transmit circuit further comprises:

and the coupling unit is respectively coupled with the output end of the power amplifier and the input end of the first filtering unit and is used for coupling the first radio frequency signal.

9. The radio frequency system according to claim 7, wherein the first receiving circuit is further configured to support a receive amplification process of a plurality of third radio frequency signals in a mid-to-high band.

10. The radio frequency system of claim 7, wherein the first transceiver module is further configured with a third antenna port, wherein the first transceiver module further comprises:

And the input end of the second receiving circuit is connected with the third antenna port, and the output end of the second receiving circuit is connected with the receiving port and is used for supporting the receiving and amplifying treatment of a plurality of fourth radio frequency signals in a low frequency band.

11. The radio frequency system of claim 10, further comprising:

and the third transceiver module is respectively connected with the radio frequency transceiver and the combining switching module and is used for supporting the receiving and amplifying treatment of a plurality of fifth radio frequency signals in a low frequency band.

12. The radio frequency system of claim 1, further comprising:

the first receiving module is respectively connected with the radio frequency transceiver and the combining switching module and is used for supporting the MIMO main set receiving processing of the first radio frequency signal and the second radio frequency signal;

and the second receiving module is respectively connected with the radio frequency transceiver and the combining switching module and is used for supporting MIMO diversity receiving processing of the first radio frequency signal and the second radio frequency signal.

13. A communication device comprising a radio frequency system as claimed in any one of claims 1-12.