CN112468166B

CN112468166B - Radio frequency circuit and electronic equipment

Info

Publication number: CN112468166B
Application number: CN202011375332.XA
Authority: CN
Inventors: 彭干涛; 王明宝
Original assignee: Vivo Mobile Communication Co Ltd
Current assignee: Vivo Mobile Communication Co Ltd
Priority date: 2020-11-30
Filing date: 2020-11-30
Publication date: 2022-12-02
Anticipated expiration: 2040-11-30
Also published as: CN112468166A

Abstract

The application discloses radio frequency circuit and electronic equipment relates to electron technical field, solves the technical problem that the correlation technique can cause great influence to communication module's communication, radio frequency circuit includes: the device comprises a processing module, a first communication module, a second communication module and a control signal supply module, wherein the first communication module is connected with the processing module; the second communication module is connected with the processing module, and the communication frequency band of the first communication module is adjacent to the communication frequency band of the second communication module; the control signal supply module is respectively connected with the first communication module and the second communication module; at least one of the first communication module and the second communication module comprises a coexistence filter and a switch module, the switch module is provided with a first end, a second end and a third end, the first end and the second end of the switch module are respectively connected with two ends of the coexistence filter, and the third end of the switch module is connected with the control signal supply module.

Description

Radio frequency circuit and electronic equipment

Technical Field

The application belongs to the technical field of electronics, and particularly relates to a radio frequency circuit and electronic equipment.

Background

Various communication modules, such as a 5G (fifth generation mobile communication technology) communication module and a WIFI (wireless internet access) communication module, are commonly integrated in current electronic devices. The communication modules in the electronic device may in some cases interfere with each other. For example, the operating frequency band of the 5G communication module may interfere with the operating frequency band of the WIFI communication module.

In order to reduce mutual interference between communication modules in an electronic device, related technologies often shut down one communication module while another communication module is in operation.

This processing method in the related art can reduce interference between communication modules, but has a large influence on communication of another communication module.

Disclosure of Invention

The embodiment of the application provides a radio frequency circuit and an electronic device, and solves the technical problem that the communication of another communication module is greatly influenced in the related technology.

In order to solve the technical problem, the present application is implemented as follows:

in a first aspect, an embodiment of the present application provides a radio frequency circuit, including: the device comprises a processing module, a first communication module, a second communication module and a control signal supply module, wherein the first communication module is connected with the processing module; the second communication module is connected with the processing module, and the communication frequency band of the first communication module is adjacent to the communication frequency band of the second communication module; the control signal supply module is respectively connected with the first communication module and the second communication module; wherein at least one of the first communication module and the second communication module comprises a coexistence filter and a switch module, the switch module has a first terminal, a second terminal and a third terminal, the first terminal and the second terminal of the switch module are respectively connected with two terminals of the coexistence filter, and the third terminal of the switch module is connected with the control signal supply module.

In a second aspect, an embodiment of the present application provides an electronic device, including: the radio frequency circuit of the first aspect.

According to the radio frequency circuit and the electronic device provided by the embodiment of the application, at least one of the first communication module and the second communication module comprises the coexistence filter, so that when the interference between the communication modules is large, the coexistence filter can be used for suppressing out-of-band interference of the first communication module or the second communication module without closing the affected communication module, and the influence on the communication modules can be reduced. In addition, at least one of the first communication module and the second communication module further includes a switch module, the first end and the second end of the switch module are respectively connected to two ends of the coexistence filter, and the third end of the switch module is connected to the control signal supply module, so that, under the condition that the interference between the communication modules is small but the insertion loss caused by the coexistence filter is large, the coexistence filter can be bypassed to reduce the high insertion loss caused by the coexistence filter, thereby improving the receiving sensitivity of the communication module and further reducing the influence on the communication module.

Drawings

The above and/or additional aspects and advantages of the present application will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:

fig. 1 is a schematic diagram of a radio frequency circuit according to an embodiment of the present application;

fig. 2 is a schematic diagram of an rf circuit according to an embodiment of the present disclosure;

fig. 3 is a schematic diagram of an rf circuit according to an embodiment of the present application;

fig. 4 is a schematic diagram of an rf circuit according to an embodiment of the present application;

FIG. 5 is a schematic diagram of an RF circuit according to an embodiment of the present application;

fig. 6 is a schematic diagram of an rf circuit according to an embodiment of the present application;

fig. 7 is a schematic diagram of an rf circuit according to an embodiment of the present application;

reference numerals:

10-a radio frequency circuit; 101-a processing module; 102 — a first communication module; 103-a second communication module; 104-coexistence filter; 105-a switching module; 106-control signal supply module; 1021-modem; 1022 — an amplification module; 10221 — low noise amplifier; 10222 — coupler; 1023-5G antenna; 1031-WIFI chip; 1032-WIFI antenna; 1033-switching element; 1034-WIFI 2.4G coexistence filter; 1035 — a combiner; 1041 — first coexistence filter; 1042 — a second coexistence filter; 1051 — a first switch module; 1052 — a second switching module; 1061-a detection module; 1062 — a logic control element; 1063-power divider; 1064 — a first attenuation module; 1065 — second attenuation module.

Detailed Description

Reference will now be made in detail to embodiments of the present application, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are exemplary only for the purpose of explaining the present application and are not to be construed as limiting the present application. All other embodiments obtained by a person of ordinary skill in the art based on the embodiments in the present application without making any creative effort belong to the protection scope of the present application.

The features of the terms first and second in the description and in the claims of the present application may explicitly or implicitly include one or more of such features. In the description of the present application, "a plurality" means two or more unless otherwise specified. In addition, "and/or" in the specification and claims means at least one of connected objects, a character "/", and generally means that the former and latter related objects are in an "or" relationship.

In the description of the present application, it is to be noted that the terms "connected" and "connected," unless otherwise specifically stated or limited, are to be construed broadly, e.g., as meaning directly connected to one another, indirectly connected through an intermediary, and communicating between two elements. The specific meaning of the above terms in the present application can be understood in a specific case by those of ordinary skill in the art.

As described in the background, some communication modules in the electronic device may interfere with each other, and in the radio frequency circuit where the 5G communication module and the WIFI communication module coexist, coupling interference between the 5G communication and the WIFI communication is taken as an example. When the 5G communication module is in a transmitting state, the 5G communication module can transmit an N79 transmitting signal working in a 4400-5000 MHz frequency band. The specific reasons that the N79 transmitting signal interferes with the receiving radio frequency circuit of the WIFI communication module are mainly that: since the operating frequency band of the N79 is too close to the WIFI operating frequency band (5150-5850 MHz), the side lobes of the N79 transmitted signal are coupled to the WIFI antenna through the antenna. On the other hand, the out-of-band isolation of the WIFI communication module is not sufficient, and a large main wave of the N79 transmitted signal may cause an LNA (Low Noise Amplifier) of the WIFI to block out of band, so that the receiving sensitivity of the communication module is reduced.

Based on this, the embodiments of the present application provide a radio frequency circuit that can suppress interference between communication modules and maintain good receiving performance of the communication modules: by adding the coexistence filter to the first communication module and/or the second communication module, when the interference between the communication modules is large, the coexistence filter can be used to suppress the out-of-band interference of the first communication module and/or the second communication module without shutting down the affected communication module, thereby reducing the influence on the communication modules. In addition, the first communication module and/or the second communication module are/is also provided with a switch module, and the switch module is connected with the coexisting filter, so that the switch module can be controlled to bypass the coexisting filter under the condition that the interference between the communication modules is small but the insertion loss caused by the coexisting filter is large, so that the high insertion loss caused by the coexisting filter is reduced, the receiving sensitivity of the communication module is improved, and the influence on the communication module is further reduced.

Exemplary embodiments of the present application will be described in more detail below with reference to fig. 1-7.

The present embodiment provides a radio frequency circuit 10, as shown in fig. 1 to 3, the radio frequency circuit 10 may include: the communication device comprises a processing module 101, a first communication module 102 and a second communication module 103, wherein the first communication module 102 is connected with the processing module 101, the second communication module 103 is connected with the processing module 101, and a communication frequency band of the first communication module is adjacent to a communication frequency band of the second communication module.

In this embodiment, the processing module 101 may be a Central Processing Unit (CPU), and may be configured to control transmission and reception of signals of the first communication module 102 and the second communication module 103.

It should be noted that, in the radio frequency circuit provided in the embodiment of the present application, the communication frequency band of the first communication module is adjacent to the communication frequency band of the second communication module, and the specific communication frequency bands of the first communication module and the second communication module do not affect the implementation of the present application. And thus, no limitation is made on the specific communication frequency bands of the first communication module and the second communication module.

In one embodiment, the communication frequency band of the first communication module is adjacent to the communication frequency band of the second communication module, for example, the first communication module may be a 5G communication module, a 6G communication module, or the like, and the second communication module may be a WIFI communication module, or a newly developed communication standard module. For example, the communication band of the 5G communication module may be an NR (New radio) operating band numbered n 79: 4400-5000 MHz, or the NR working frequency band numbered as n78, and the like; the communication frequency band of the WIFI communication module can be 5150-5850MHz. Because the communication frequency band of the 5G communication module is adjacent to the communication frequency band of the WIFI communication module, when the 5G communication module communicates with the WIFI communication module at the same time, coupling interference exists between the 5G communication module and the WIFI communication module.

In order to suppress coupling interference between the first communication module and the second communication module, in the radio frequency circuit according to the embodiment of the present application, at least one of the first communication module 102 and the second communication module 103 includes a coexistence filter 104 and a switch module 105, the switch module 105 has a first terminal, a second terminal, and a third terminal, and the first terminal and the second terminal of the switch module 105 are respectively connected to two terminals of the coexistence filter.

It is understood that when the 5G communication module communicates with the WIFI communication module simultaneously, the coexistence filter 104 may be disposed in the 5G communication module and/or the WIFI communication module, and the coexistence filter 104 may be used to suppress a portion of the coupling interference.

The coexistence filter is a band-pass filter in a radio frequency circuit where a plurality of communication modules coexist, and can filter out signals outside a communication frequency band. For example, the coexistence filter in the 5G communication module may suppress interference signals (such as WIFI signals) outside the communication band in the 5G communication module. For another example, the coexistence filter in the WIFI communication module may suppress interference signals (e.g., 5G signals) outside the communication band in the WIFI communication module. For another example, the coexistence filters in the 5G communication module and the WIFI communication module may suppress interference signals outside the communication band in the 5G communication module and interference signals outside the communication band in the WIFI communication module, respectively.

However, while the co-existence filter in the rf circuit suppresses the coupling interference, the in-band insertion loss caused by the co-existence filter is also large, and the high insertion loss may cause an increase in the noise figure of the first stage of reception, thereby degrading the reception sensitivity of the rf circuit. Accordingly, in the rf circuit according to the embodiment of the present application, one switch module 105 may be connected in parallel to the coexistence filter 104. Specifically, the switch module 105 has a first terminal, a second terminal and a third terminal, the first terminal and the second terminal of the switch module 105 are respectively connected to two terminals of the coexistence filter 104, and the switch module 105 can be used to bypass the coexistence filter 104 to reduce high insertion loss caused by the coexistence filter 104.

In order to control the switching module 105 to bypass the coexistence filter 104, in the radio frequency circuit of the embodiment of the present application, the radio frequency circuit further includes a control signal supply module 106. The control signal supply module 106 is respectively connected to the first communication module 102 and the second communication module 103, and a third terminal of the switch module 105 is connected to the control signal supply module 106.

It is to be appreciated that the control signal supply module 106 can be utilized to supply a control signal to the switch module 105 to bypass the coexistence filter 104. In particular, when coupling interference between the first communication module 102 and the second communication module 103 is small, a control signal may be provided to the switching module 105 to bypass the coexistence filter. Specifically, the control signal received by the third terminal of the switch module 105 is used to control whether the coexistence filter 104 is bypassed.

The switch module may be a module having a switching function, such as SPDT (Single Pole Double Throw), MOSFET (Metal-Oxide-Semiconductor Field Effect Transistor), and the embodiment of the present application does not limit the specific switch type of the switch module.

According to the radio frequency circuit provided by the embodiment of the application, at least one of the first communication module and the second communication module comprises the coexistence filter, so that when the interference between the communication modules is large, the coexistence filter can be used for suppressing the out-of-band interference of the first communication module or the second communication module without closing the influenced communication modules, and compared with the related art which forcibly closes the influenced communication modules, the throughput of the influenced communication modules is improved. In addition, at least one of the first communication module and the second communication module further includes a switch module, a first end and a second end of the switch module are respectively connected to two ends of the coexistence filter, and a third end of the switch module is connected to the control signal supply module, so that the coexistence filter is bypassed when the interference between the communication modules is small but the insertion loss caused by the coexistence filter is large, so as to reduce the high insertion loss caused by the coexistence filter, thereby improving the receiving sensitivity of the communication module. Thus, the influence on the communication module is greatly reduced.

In order to reduce high insertion loss caused by a coexistence filter when interference between communication modules is small but insertion loss caused by the coexistence filter is large, in the radio frequency circuit provided in the embodiment of the present application, the control signal supply module is configured to supply a bypass signal to the switch module to bypass the coexistence filter when a first target condition is satisfied;

wherein the first target condition comprises any one of:

the output power of the first communication module is larger than a threshold value, and the second communication module is in a transmitting state;

the output power of the first communication module is less than the threshold and the second communication module is in a receiving state.

The output power of the first communication module may be the power of the transmission signal of the first communication module.

It can be understood that the first target condition may represent that the coexistence filter may not be used when the coupling interference between the first communication module and the second communication module is small but the insertion loss caused by the coexistence filter is large. For example, when the output power of the first communication module is greater than the threshold and the second communication module is in the transmission state, the first communication module and the second communication module are both in the high-power transmission state, the coupling interference between the first communication module and the second communication module is small, and the coexistence filter can be bypassed to reduce the high insertion loss caused by the coexistence filter, thereby improving the receiving sensitivity of the communication module. For another example, when the output power of the first communication module is less than the threshold and the second communication module is in the receiving state, the first communication module may be in the low-power transmitting state, and the coupling interference with the second communication module in the receiving state is small, or the first communication module may be in the receiving state (where the output power is equal to 0), and the coupling interference with the second communication module in the receiving state is small, and the coexistence filter may be bypassed, so as to reduce the high insertion loss caused by the coexistence filter, thereby improving the receiving sensitivity of the communication module.

According to the radio frequency circuit provided by the embodiment of the application, at least one of the first communication module and the second communication module comprises a coexistence filter and a switch module, the third end of the switch module is connected with the control signal supply module, and the control signal supply module provides a bypass signal to the switch module to bypass the coexistence filter when a first target condition is met; the first target condition includes any one of: the output power of the first communication module is greater than a threshold value, and the second communication module is in a transmitting state; the output power of the first communication module is less than a threshold and the second communication module is in a receiving state. In this way, when the coupling interference between the first communication module and the second communication module is small but the insertion loss caused by the coexistence filter is large, the control signal supply module can provide the bypass signal to the switch module to bypass the coexistence filter, so that the high insertion loss caused by the coexistence filter is reduced, and the receiving sensitivity of the radio frequency circuit is improved.

In order to suppress interference between communication modules in the case where the interference between communication modules is large, in the radio frequency circuit provided in the embodiment of the present application, the control signal supply module supplies a filter turn-on signal to the switch module to turn on the coexistence filter in the case where a second target condition is satisfied;

the second target condition includes any one of:

the output power of the first communication module is larger than a threshold value, and the second communication module is in a receiving state;

the output power of the first communication module is less than the threshold and the second communication module is in a transmitting state.

It can be understood that the second target condition may represent a situation where coupling interference between the first communication module and the second communication module is large, and a coexistence filter may be used to suppress the coupling interference between the first communication module and the second communication module. For example, when the output power of the first communication module is greater than the threshold and the second communication module is in the receiving state, the high-power transmission signal of the first communication module may enter the receiving path of the second communication module to generate coupling interference, and the coupling interference between the first communication module and the second communication module is large, at this time, the coexistence filter may be used to suppress the coupling interference between the first communication module and the second communication module. For another example, when the output power of the first communication module is smaller than the threshold and the second communication module is in the transmitting state, the output power of the first communication module smaller than the threshold may be the first communication module transmitting with low power, or may be the first communication module being in the receiving state (the output power of the first communication module is equal to 0), and the coupling interference between the first communication module and the second communication module in the transmitting state is large, and at this time, the coexistence filter may be used to suppress the coupling interference of the transmission signal of the second communication module to the first communication module.

According to the radio frequency circuit provided by the embodiment of the application, at least one of the first communication module and the second communication module comprises a coexistence filter and a switch module, the third end of the switch module is connected with the control signal supply module, and the control signal supply module provides a filter turn-on signal to the switch module to turn on the coexistence filter when a second target condition is met; the second target condition includes any one of: the output power of the first communication module is greater than a threshold value and the second communication module is in a receiving state; the output power of the first communication module is smaller than the threshold value, and the second communication module is in a transmitting state, so that the coexisting filter can be turned on by providing the filter turn-on signal to the switch module under the condition that the coupling interference between the first communication module and the second communication module is large, the coupling interference between the first communication module and the second communication module is suppressed, compared with the condition that the affected communication module is turned off in the related art, the affected communication module does not need to be turned off, and the throughput of the affected communication module is improved.

In order to flexibly suppress interference between communication modules according to an actual degree of interference between communication modules, in the radio frequency circuit provided in the embodiment of the present application, referring to fig. 4, the control signal supply module 106 may include a detection module 1061 and a logic control element 1062; the detecting module 1061 has a first terminal and a second terminal, and the logic control element 1062 has a first terminal, a second terminal, and a third terminal; a first end of the detection module 1061 is connected to the first communication module 102, a second end of the detection module 1061 is connected to a first end of the logic control element 1062, a second end of the logic control element 1062 is connected to the third end of the switch module 105, and a third end of the logic control element 1062 is connected to the second communication module 103.

Specifically, the detection module 1061 may be a diode detection circuit, the diode detection circuit may be composed of an input loop, a diode VD and an RC low-pass filter, when the first end of the detection module (i.e., the input end of the diode detection circuit) is connected to the first communication module, the capacitor is charged and discharged by the transmission signal of the first communication module, so as to control the on and off of the diode, and finally achieve dynamic balance, and the second end of the detection module (i.e., the output end of the diode detection circuit) may output a detection voltage signal. The larger the power of the transmission signal of the first communication module (i.e., the output power of the first communication module), the larger the voltage of the detection voltage signal.

It should be noted that the detection module may be configured to determine whether the output power of the first communication module is greater than a threshold, and specifically, the first end of the detection module is connected to the first communication module, and at this time, the detection module may receive the transmission signal of the first communication module and output a detection voltage signal. The larger the power of the transmission signal of the first communication module (i.e., the output power of the first communication module), the larger the voltage of the detection voltage signal. When the detection voltage signal is in a high level state, the output power of the first communication module is greater than the threshold value, and when the detection voltage signal is in a low level state, the output power of the first communication module is less than the threshold value.

It should be noted that the logic control element 1062 includes a first terminal, a second terminal, and a third terminal, and the logic control element 1062 determines whether the first target condition or the second target condition is satisfied according to inputs of the first terminal and the third terminal, and outputs a corresponding bypass signal or a filter-on signal at the second terminal to the switch module, so as to control whether the coexistence filter 104 is bypassed. Specifically, the second end of the detection module is connected to the first end of the logic control element, and the first end of the logic control element can obtain the detection voltage signal output by the second end of the detection module to determine whether the output power of the first communication module is greater than the threshold. On the other hand, the third end of the logic control element is connected with the second communication module, and the third end of the logic control element can be used for acquiring an enable signal output by the second communication module so as to judge whether the second communication module is in a transmitting state or a receiving state. On the basis, the second terminal of the logic control element is connected to the third terminal of the switch module, and the logic control element may determine whether the first target condition or the second target condition is satisfied by combining the judgment conditions obtained from the first terminal and the third terminal, and output a corresponding bypass signal or a filter-on signal at the second terminal of the logic control element to the switch module, thereby controlling whether the coexistence filter 104 is bypassed.

In one embodiment, referring to fig. 6-7, the logic control element 1062 may be a logic xor gate, the first terminal of the logic control element may be a first input terminal of the logic xor gate, the second terminal of the logic control element may be an output terminal of the logic xor gate, and the third terminal of the logic control element may be a second input terminal of the logic xor gate. On the basis, the first input end of the logic exclusive-or gate is connected with the second end of the detection module, and can acquire a detection voltage signal output by the second end of the detection module so as to judge whether the output power of the first communication module is greater than a threshold value; the second input end of the logic exclusive-or gate is connected with the second communication module, and the second input end of the logic exclusive-or gate can be used for acquiring an enabling signal output by the second communication module so as to judge whether the second communication module is in a transmitting state or a receiving state. The output end of the logic exclusive or gate is connected to the third end of the switch module, and the logic exclusive or gate can output a corresponding bypass signal or a filter conducting signal at the output end in combination with the judgment conditions obtained by the first input end and the second input end to supply to the switch module, so as to control whether the coexistence filter 104 is bypassed.

Specifically, the first input and the second input of the logic exclusive or gate may be the detected voltage signal (B) and the enable signal (C) output by the second communication module, respectively. When the output power of the first communication module is greater than the threshold value, the detection voltage signal is a high level signal, and B is 1; when the output power of the first communication module is less than the threshold value, the detection voltage signal is a low level signal, and B is 0. When the second communication module is in a transmitting state, an enabling signal output by the second communication module is a high-level signal, and C is 1; when the second communication module is in a receiving state, the enable signal output by the second communication module is a low level signal, and C is 0. Therefore, when the output Y =0 of the logic exclusive-OR gate, the output low level signal of the logic exclusive-OR gate provides the bypass signal to the switch module to bypass the coexistence filter, so that the insertion loss of the communication module comprising the coexistence filter is reduced, and the receiving sensitivity of the first communication module and the second communication module under the condition of small mutual interference is improved.

For example, when the detection voltage signal output by the second end of the detection module and acquired by the first input end of the logic exclusive or gate is a high-level signal, it may be determined that the output power of the first communication module is greater than the threshold; when the second input end of the logic exclusive or gate acquires that the enable signal of the second communication module is a high-level signal, it can be determined that the second communication module is in a transmitting state. At this time, the first target condition is satisfied, and the low-level signal that can be output by the output end of the logic exclusive or gate is equivalent to outputting a corresponding bypass signal to the third end of the switch module, so that the coexistence filter is bypassed by controlling the switch module, and the high insertion loss caused by the coexistence filter is reduced.

For another example, when the detection voltage signal obtained by the first input terminal of the logic exclusive or gate and output by the second terminal of the detection module is a low-level signal, it may be determined that the output power of the first communication module is less than the threshold; when the second input end of the logic exclusive or gate acquires that the enable signal of the second communication module is a low-level signal, it can be determined that the second communication module is in a receiving state. At this time, the first target condition is satisfied, and the low level signal that can be output by the output terminal of the logic exclusive or gate, that is, the corresponding bypass signal is output to the third terminal of the switch module, so that the coexisting filter is bypassed by controlling the switch module, and the high insertion loss caused by the coexisting filter is reduced.

According to the radio frequency circuit provided by the embodiment of the application, the control signal supply module comprises a detection module and a logic control element; the first end of the detection module is connected with the first communication module, the second end of the detection module is connected with the first end of the logic control element, the second end of the logic control element is connected with the third end of the switch module, and the third end of the logic control element is connected with the second communication module, wherein the logic control element can judge whether a first target condition or a second target condition is met according to the input of the first end and the third end of the logic control element, and outputs a bypass signal or a filter conduction signal at the second end. In this way, when the interference between the communication modules is small but the insertion loss caused by the coexistence filter is large, the logic control element outputs a bypass signal to bypass the coexistence filter; when the interference between the communication modules is large, the logic control element outputs a filter-on signal to turn on the coexistence filter, so that the logic control element can selectively output a bypass signal or a filter-on signal according to the actual interference between the communication modules, thereby flexibly suppressing the interference between the communication modules according to the actual interference degree between the communication modules.

Optionally, in order to improve the utilization rate of the output signal of the first communication module, in the radio frequency circuit provided in this embodiment of the application, as shown in fig. 5 to 7, the control signal supply module 106 may further include a power divider 1063, and the first end of the detection module is connected to the first communication module through the power divider. Specifically, referring to fig. 6 to 7, the power divider 1063 has a first end, a second end, and a third end, where the first end of the power divider is connected to the first communication module, the power divider may obtain the transmission signal output by the first communication module, and the power divider may convert the transmission signal of the first communication module into two paths of signals and output the two paths of signals from the second end and the third end of the power divider: one path of signal output by the second end of the power divider 1063 is output to the detection module 1061; the power divider 1063 outputs a signal output from the third end to the modem of the first communication module, so as to adjust the power of the transmitted signal more accurately.

According to the rf circuit provided in this embodiment of the present application, the control signal supply module may further include a power divider, as shown in fig. 5 to 7, the transmission signal output by the first communication module is divided into two paths of signals by the power divider, and one path of signal is output to the detection module, which is convenient for the detection module to determine the output power of the first communication module, and the other path of signal is fed back to the modem of the first communication module, which is convenient for the modem to adjust the power of the transmission signal in real time and accurately according to the output power of the transmission signal, thereby improving the utilization rate of the output signal of the first communication module.

Further, it is noted that the output power of the first communication module being equal to the threshold value may characterize a case where the influence of the coupling interference between the first communication module and the second communication module on the reception sensitivity is equal to 3 dB. For example, if the output power of the first communication module is greater than the threshold, the influence of the coupling interference between the first communication module and the second communication module on the receiving sensitivity of the radio frequency circuit is greater than 3dB, and at this time, the coupling interference between the first communication module and the second communication module is greater, so that a coexistence filter may be disposed in the radio frequency circuit to suppress the interference; if the output power of the first communication module is smaller than the threshold, the influence of the coupling interference between the first communication module and the second communication module on the receiving sensitivity of the radio frequency circuit is smaller than 3dB, and at this moment, the coupling interference between the first communication module and the second communication module is smaller but the insertion loss caused by the coexistence filter is large, so that the coexistence filter can be bypassed. When each communication module receives and transmits signals through each communication antenna, when the coupling interference between the first communication module and the second communication module is caused due to different specific isolation degrees among different types of communication antennas in the electronic equipment, the specific thresholds required to be set are also different: the larger the isolation between the antenna of the first communication module and the antenna of the second communication module is, the larger the threshold value needs to be set. Or, when the difference in frequency band between the communication frequency bands of the communication modules is different, and coupling interference between the first communication module and the second communication module is caused, the specifically required threshold values are also different: the larger the difference between the communication band of the first communication module and the communication band of the second communication module is, that is, the farther the communication band of the first communication module is adjacent to the communication band of the second communication module, the larger the threshold value needs to be set.

In order to increase the application range of the rf circuit provided in the embodiment of the present application, in the rf circuit provided in the embodiment of the present application, as shown in fig. 5 to 7, the control signal supply module 106 further includes a first attenuation module 1064; the second end of the detecting module 1061 is connected to the first end of the logic control element 1062 through the first attenuating module 1064. The first attenuation module 1064 is configured to adjust a voltage value of the detection voltage signal according to a threshold, where k is a scaling factor and u is a voltage value of the detection voltage signal output by the second end of the detection module. The first attenuation module can adjust the voltage value of the detection voltage signal output by the second end of the detection module, and when the influence of the coupling interference between the first communication module and the second communication module on the receiving sensitivity of the radio frequency circuit is more than 3dB, the adjusted voltage value of the detection voltage signal output by the first attenuation module is just a high-level signal. In this way, in the radio frequency circuit provided in the embodiment of the present application, after the threshold is flexibly determined based on different application scenarios, the first attenuation module adjusts the voltage value of the detection voltage signal, so that the detection voltage signal adjusted by the first attenuation module is a high-level signal when the output power of the first communication module is greater than the threshold, and the detection voltage signal adjusted by the first attenuation module is a low-level signal when the output power of the first communication module is less than the threshold. Therefore, the radio frequency circuit provided by the embodiment of the application is suitable for various application scenarios in which the antenna isolation degrees between the first communication module and the second communication module are different, or the frequency band difference between the communication frequency band of the first communication module and the communication frequency band of the second communication module is different, and the application range of the radio frequency circuit provided by the embodiment of the application is expanded.

In order to avoid saturation and even damage of the low noise amplifier in the first communication module, in the radio frequency circuit provided in the embodiment of the present application, as shown in fig. 5 to 7, the control signal supply module 106 further includes a second attenuation module 1065 having a first end and a second end; a first end of the second attenuation module 1065 is connected to the first communication module 102, and a second end of the second attenuation module 1065 is connected to the second communication module 103. Specifically, a first end of the second attenuation module 1065 is connected to the low noise amplifier 10221.

According to the radio frequency circuit provided by the embodiment of the application, the second attenuation module is respectively connected with the low noise amplifier of the first communication module and the second communication module, the second communication module outputs the enable signal to the second attenuation module, and when the second communication module is in a transmitting state, the maximum bearable input level of the low noise amplifier 10221 in the first communication module is controlled to be increased, so that the low noise amplifier is prevented from being saturated and even damaged, and the effect of protecting the low noise amplifier is achieved.

In addition, in the radio frequency circuit provided in the embodiment of the present application, at least one of the first communication module and the second communication module includes a coexistence filter and a switch module. Since the radio frequency circuit includes the first communication module and the second communication module, there are at least three cases where the coexistence filter and the switch module are provided in two communication modules in the radio frequency circuit:

the first case: as shown in fig. 2, the first communication module includes a coexistence filter and a switch module.

In the radio frequency circuit provided in the embodiment of the present application, as shown in fig. 7, the first communication module 102 may be a 5G communication module, the first communication module 102 may include a modem 1021, an amplifying module 1022, and a 5G antenna 1023, and the modem 1021, the amplifying module 1022, the coexistence filter 104, the switch module 105, and the 5G antenna 1023 are sequentially connected; the first end of the detecting module 1061 is connected to the amplifying module 1022.

Referring to fig. 7, the coexistence filter 104 may include a first coexistence filter 1041, and the switch module 105 may include a first switch module 1051, in which case, the modem 1021, the amplifying module 1022, the first coexistence filter 1041, the first switch module 1051, and the 5G antenna 1023 are connected in sequence.

Referring to fig. 7, a modem 1021 is used to modulate and demodulate a received signal and a transmitted signal of a 5G communication. The amplifying Module 1022 is a Module having a function of amplifying a transmission signal and a reception signal, and at least includes a Low Noise Amplifier 10221 for amplifying the reception signal at the RX end and a Power Amplifier for amplifying the transmission signal at the TX end, for example, the amplifying Module 1022 may be a PAMID (Power Amplifier with integrated Duplexer Power Amplifier) integrating an LNA (Low Noise Amplifier), a PA (Power Amplifier), a filter, and a coupler.

According to the radio frequency circuit provided by the embodiment of the application, the first communication module comprises the coexistence filter and the switch module, the first communication module is the 5G communication module, when the interference between the communication modules is large, the coexistence filter can be used for suppressing the out-of-band interference of the 5G communication module without closing the affected communication module, and compared with the related art in which the affected communication module is forcibly closed, the throughput of the affected communication module is improved. In addition, the 5G communication module further includes a switch module, wherein the first terminal and the second terminal of the switch module are respectively connected to the two terminals of the coexistence filter, and the third terminal of the switch module is connected to the control signal supply module, so that the coexistence filter is bypassed to reduce high insertion loss caused by the coexistence filter and improve the receiving sensitivity of the 5G communication module when the interference between the communication modules is small but the insertion loss caused by the coexistence filter is large.

In a specific embodiment, as shown in fig. 7, the control signal supply module 106 of the rf circuit 10 provided in the embodiment of the present application may further include a power divider 1063, a first attenuation module 1064, and a second attenuation module 1065.

Referring to fig. 7, the power divider 1063 has a first end, a second end, and a third end; the first end of the power divider is connected to the amplifying module 1022, the second end of the power divider is connected to the first end of the detecting module, and the third end of the power divider is connected to the modem. Specifically, the amplifying module 1022 further includes a coupler 10222, and a first end of the power divider is connected to the coupler 10222. It can be understood that the first end of the power divider is connected to the coupler, and the transmission signal of the first communication module can be obtained from the coupling end of the coupler, and the power divider can convert the transmission signal of the first communication module into two paths of signals, and output the two paths of signals from the second end and the third end of the power divider: one path of signal at the second end of the power divider 1063 is output to the detection module 1061; one path of signal at the third end of the power divider 1063 is output to the modem of the first communication module, and is used for controlling the power of the transmitted signal.

Wherein, referring to FIG. 7, the first attenuation module 1064 has a first end and a second end; the first end of the first attenuation module is connected to the second end of the detector module 1061, and the second end of the first attenuation module 1064 is connected to the first end of the logic control element 1062. It can be understood that the first attenuation module can be used to adjust the voltage value of the detection voltage signal so that the detection voltage signal adjusted by the first attenuation module is a high-level signal when the output power of the first communication module is greater than the threshold value.

Wherein, referring to FIG. 7, the second attenuation module 1065 has a first end and a second end; a first end of the second attenuation module 1065 is connected to the amplifying module, and a second end of the second attenuation module is connected to the second communication module. Specifically, the amplifying module 1022 includes a low noise amplifier 10221, and a first end of the second attenuating module 1065 is connected to the low noise amplifier 10221. It can be understood that the second attenuation module 1065 is connected to the low noise amplifier of the first communication module and the second communication module, and when the second communication module is in a transmitting state, the second communication module may output an enable signal to the second attenuation module, so that the second attenuation module controls the maximum tolerable input level of the low noise amplifier 10221 in the first communication module to increase, thereby avoiding saturation and even damage of the low noise amplifier in the 5G communication module, and playing a role in protecting the low noise amplifier.

The second case: as shown in fig. 1, the second communication module may include a coexistence filter and a switch module.

In the radio frequency circuit provided in the embodiment of the present application, as shown in fig. 6, the second communication module 103 may be a WIFI communication module, the second communication module 103 further includes a WIFI chip 1031 and a WIFI antenna 1032, and the WIFI chip 1031, the coexistence filter 104, the switch module 105 and the WIFI antenna 1032 are sequentially connected. A third terminal of the logic control element 1062 is connected to the WIFI chip 1031.

The WIFI chip 1031 includes a modem that modulates and demodulates a received signal and a transmitted signal with a communication band of 5150-5850MHz, and a low noise amplifier that amplifies the received signal and a power amplifier that amplifies the transmitted signal.

As shown in fig. 6, the WIFI chip 1031 has a first end, a second end, a third end, and a fourth end, the first end of the WIFI chip 1031 is connected to the processing module 101, and the second end of the WIFI chip 1031 is connected to the third end of the logic control element. Specifically, the processing module 101 is configured to control transmission and reception of a signal of the WIFI chip 1031 through a first end of the WIFI chip. The second end of the WIFI chip can output an enable signal to the third end of the logic control element so as to judge whether the state of the second communication module is a transmitting state or a receiving state. If the second end of the WIFI chip outputs a high-level enabling signal to the third end of the logic control element, determining that the second communication module is in a transmitting state; and if the second end of the WIFI chip outputs a low-level enabling signal to the third end of the logic control element, determining that the second communication module is in a receiving state.

According to the radio frequency circuit provided by the embodiment of the application, the second communication module can comprise the coexistence filter and the switch module, the second communication module is the WIFI communication module, when the interference between the communication modules is large, the coexistence filter can be utilized to inhibit the out-of-band interference of the WIFI communication module, the affected communication module does not need to be closed, and compared with the prior art in which the affected communication module is forcibly closed, the throughput of the affected communication module is improved. In addition, WIFI communication module still includes the switch module, through with the first end and the second end of switch module respectively with coexistence filter's both ends are connected, the third end of switch module with control signal supplies the module to be connected, so, under the less but great condition of inserting the loss that coexistence filter brought of interference between the communication module, with coexistence filter bypass to reduce the high insertion loss that coexistence filter brought, thereby improve WIFI communication module's receiving sensitivity.

On the other hand, in order to suppress interference between the first communication module and the WIFI communication module, in the industry, a switching element is generally added in the WIFI communication module, and when the 5G communication is in a transmission state, a receiving path of a 5G RX end in the WIFI communication module is forcibly closed by using the switching element, so that the throughput of WIFI is greatly reduced due to the fact that the receiving path of the 5G RX end in the WIFI communication module is forcibly closed. In order to improve the throughput of the WIFI communication, in a specific implementation example of the present application, the WIFI communication module further includes a switching element 1033, where the switching element has a first end, a second end, a third end, and a fourth end; the third end and the fourth end of the WIFI chip are respectively connected with the first end and the second end of the switching element; and the third end of the switching element is connected with the second end of the WIFI chip, and the fourth end of the switching element is connected with the coexistence filter.

Specifically, the third end and the fourth end of the WIFI chip are a 5G TX transmitting end and a 5G RX receiving end, respectively, and are connected to the first end and the second end of the switching element, respectively. The switch element is a switch with a selection function, such as a single-pole double-throw switch, or other switches with a selection function, and the specific type of the switch element is not limited herein.

It can be understood that when the first end of the switching element is turned on, the transmission path of the 5G TX end of the WIFI communication module may be opened, and the reception path of the 5G RX end of the WIFI chip may be closed; when the second end of the switch element is connected, the transmitting path of the 5G TX end of the WIFI communication module can be closed, and the receiving path of the 5G RX end of the WIFI chip is opened.

And the third end of the switch element is connected with the second end of the WIFI chip, and the second end of the WIFI chip sends an enable signal to the third end of the switch element for selectively controlling the conduction of the first end or the second end of the switch element. For example, when the third terminal of the switching element receives a high-level signal, the first terminal of the selection switching element is turned on, and a transmission path of the 5G TX terminal of the WIFI communication module can be opened; when the third end of the switch element receives a low-level signal, the second end of the selection switch element is conducted, and a receiving channel of the 5G RX end of the WIFI communication module can be opened.

It should be noted that, when the 5G communication module is in the low-power transmission state and the WIFI communication module is in the reception state, the coupling interference of the 5G communication to the WIFI communication module is small, and the reception path of the 5G RX end of the WIFI communication module may not be forcibly closed. In this application scenario, according to the radio frequency circuit provided by the embodiment of the application, the WIFI chip has a first end, a second end, a third end and a fourth end; the WIFI communication module further comprises a switch element, the switch element is provided with a first end, a second end, a third end and a fourth end, the first end of the WIFI chip is connected with the processing module, the third end and the fourth end of the WIFI chip are respectively connected with the first end and the second end of the switch element, the third end of the switch element is connected with the second end of the WIFI chip, and the fourth end of the switch element is connected with the coexistence filter. Therefore, one of the transmitting path and the receiving path of the WIFI communication can be selectively opened according to the enabling signal acquired from the third end of the switch element, and the other of the transmitting path and the receiving path of the WIFI communication is closed: when the WIFI communication module is in a transmitting state, the third end of the switch element acquires a high-level enabling signal output by the second end of the WIFI chip, and a transmitting channel of WIFI communication is selectively opened; when the WIFI communication module is in a receiving state, the third end of the switch element acquires a low-level enabling signal output by the second end of the WIFI chip, and a receiving channel of WIFI communication is selectively opened. Therefore, according to the radio frequency circuit provided by the embodiment of the application, the transmitting path of the WIFI communication is directly controlled to be opened according to the transmitting state of the WIFI communication module, the receiving path is controlled to be opened according to the receiving state of the WIFI communication module, compared with a control mode in the related art that the receiving path of the WIFI communication module is forcibly closed through the switch element when the 5G communication module is in the transmitting state, the receiving path of the WIFI communication module does not need to be forcibly closed when the 5G communication module is in the low-power transmitting state and the WIFI communication module is in the receiving state, and further the throughput of the WIFI communication module is improved.

In addition, optionally, in order to improve the utilization rate of the WIFI antenna, the WIFI antenna may also receive and transmit a 2.4GHz signal in addition to receiving and transmitting a 5GHz signal. In a specific implementation example of the present application, referring to fig. 6 to 7, the second communication module 103 further includes a WIFI 2.4G coexistence filter 1034 and a combiner 1035 for controlling the signal combining output of WIFI 2.4G and WIFI 5G. The WIFI chip further has a fifth end, the fifth end of the WIFI chip is a 2.4G TRX transmitting and receiving common end, the WIFI 2.4G coexistence filter 1034 is connected with the fifth end of the WIFI chip, the WIFI 2.4G coexistence filter is connected with the WIFI antenna through the combiner, and the switch module 105 is connected with the WIFI antenna through the combiner. According to the radio frequency circuit provided by the embodiment of the application, signals of WIFI 2.4G and WIFI 5G can be combined and output or input to the WIFI antenna, the WIFI 2.4G antenna and the WIFI 5G antenna do not need to be installed respectively, and the utilization rate of the WIFI antenna is improved.

In a third situation: as shown in fig. 3, the coexistence filter includes a first coexistence filter and a second coexistence filter, and the switch module includes a first switch module and a second switch module; the first communication module includes a first coexistence filter and a first switch module, and the second communication module includes a second coexistence filter and a second switch module.

In a radio frequency circuit provided in an embodiment of the present invention, as shown in fig. 7, the coexistence filter includes a first coexistence filter and a second coexistence filter, and the switch module includes a first switch module and a second switch module; the first communication module comprises a first coexistence filter and a first switch module, and the second communication module comprises a second coexistence filter and a second switch module.

The first communication module is a 5G communication module, the 5G communication module further comprises a modem, an amplification module and a 5G antenna, and the modem, the amplification module, the coexistence filter, the switch module and the 5G antenna are connected in sequence.

The second communication module is a WIFI communication module, the WIFI communication module further comprises a WIFI chip, a switch element and a WIFI antenna, and the WIFI chip, the switch element, the coexistence filter, the switch module and the WIFI antenna are connected in sequence.

The control signal supply module further comprises a detection module, a logic control element, a power divider, a first attenuation module and a second attenuation module.

The detection module is provided with a first end and a second end; the first end of the detection module is connected with the amplification module through the power divider, and the logic control element is provided with a first end, a second end and a third end; the second end of the detection module is connected with the first end of the logic control element through the first attenuation module, the second end of the logic control element is connected with the third end of the switch module, and the third end of the logic control element is connected with the WIFI chip.

The power divider is provided with a first end, a second end and a third end; the first end of the power divider is connected with the amplifying module, the second end of the power divider is connected with the first end of the detecting module, and the third end of the power divider is connected with the modem; specifically, as shown in fig. 7, the amplifying module 1022 further includes a coupler 10222, and a first end of the power divider is connected to the coupler 10222. It can be understood that the first end of the power divider is connected to the coupler, and the transmission signal of the first communication module can be obtained from the coupling end of the coupler, and the power divider can convert the transmission signal of the first communication module into two paths of signals, and output the two paths of signals from the second end and the third end of the power divider: one path of signal at the second end of the power divider 1063 is output to the detection module 1061; one path of signal at the third end of the power divider 1063 is output to the modem of the first communication module, and is used to control the power of the transmission signal.

The first attenuation module has a first end and a second end; the first end of the first attenuation module is connected with the second end of the detection module, and the second end of the first attenuation module is connected with the first end of the logic control element.

The WIFI chip is provided with a first end, a second end, a third end and a fourth end, and the switching element is provided with a first end, a second end, a third end and a fourth end; the first end of the WIFI chip is connected with the processing module, the second end of the WIFI chip is connected with the third end of the logic control element, and the third end and the fourth end of the WIFI chip are respectively connected with the first end and the second end of the switch element.

The second attenuation module has a first end and a second end; the first end of the second attenuation module is connected with the amplification module, and the second end of the second attenuation module is connected with the second end of the WIFI chip.

And the third end of the switching element is connected with the second end of the WIFI chip, and the fourth end of the switching element is connected with the coexistence filter.

According to the radio frequency circuit provided by the embodiment of the application, the first communication module comprises the first coexistence filter and the first switch module, the first communication module is the 5G communication module, the second communication module comprises the second coexistence filter and the second switch module, the second communication module is the WIFI communication module, when the interference between the communication modules is large, the first coexistence filter can be used for restraining the out-of-band interference of the 5G communication module, the second coexistence filter can be used for restraining the out-of-band interference of the WIFI communication module, the affected communication module does not need to be closed, compared with the related art, the forced closing of the affected communication module improves the throughput of the affected communication module. In addition, the 5G communication module further includes a first switch module, the first terminal and the second terminal of the first switch module are respectively connected to two terminals of the first coexistence filter, the third terminal of the first switch module is connected to the control signal supply module, the WIFI communication module further includes a second switch module, the first terminal and the second terminal of the second switch module are respectively connected to two terminals of the second coexistence filter, and the third terminal of the second switch module is connected to the control signal supply module, so that when the interference between the communication modules is small but the insertion loss caused by the first coexistence filter and the second coexistence filter is large, the first coexistence filter and the second coexistence filter are bypassed to reduce the high insertion loss caused by the first coexistence filter and the second coexistence filter, thereby improving the receiving sensitivity of the 5G communication module and the WIFI communication module.

The embodiment of the application also provides electronic equipment, and the electronic equipment comprises any one of the radio frequency circuits provided by the embodiment of the application. With the electronic device provided by the embodiment of the present application, at least one of the first communication module and the second communication module includes the coexistence filter, so that when the interference between the communication modules is large, the coexistence filter can be used to suppress out-of-band interference of the first communication module or the second communication module without closing the affected communication module. In addition, at least one of the first communication module and the second communication module further includes a switch module, a first end and a second end of the switch module are respectively connected to two ends of the coexistence filter, and a third end of the switch module is connected to the control signal supply module, so that the coexistence filter can be bypassed to reduce high insertion loss caused by the coexistence filter when interference between the communication modules is small but insertion loss caused by the coexistence filter is large, thereby improving the receiving sensitivity of the communication module.

In the description of the present specification, reference to the description of "one embodiment," "some embodiments," "an illustrative embodiment," "an example," "a specific example," or "some examples" or the like means 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 present application. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

While embodiments of the present application have been shown and described, it will be understood by those of ordinary skill in the art that: various changes, modifications, substitutions and alterations can be made to the embodiments without departing from the principles and spirit of the application, the scope of which is defined by the claims and their equivalents.

Claims

1. A radio frequency circuit, comprising: a processing module, a first communication module, a second communication module, a control signal supply module,

the first communication module is connected with the processing module;

the second communication module is connected with the processing module, and the communication frequency band of the first communication module is adjacent to the communication frequency band of the second communication module;

the control signal supply module is respectively connected with the first communication module and the second communication module;

wherein at least one of the first communication module and the second communication module comprises a coexistence filter and a switch module, the switch module has a first end, a second end and a third end, the first end and the second end of the switch module are respectively connected with two ends of the coexistence filter, and the third end of the switch module is connected with the control signal supply module;

the first communication module is a 5G communication module, the 5G communication module comprises a modem, an amplification module and a 5G antenna, the modem, the amplification module and the 5G antenna are sequentially connected, and the control signal supply module comprises a detection module, a logic control element, a power divider, a first attenuation module and a second attenuation module;

the wave detection module is provided with a first end and a second end, and the logic control element is provided with a first end, a second end and a third end; the first end of the wave detection module is connected with the amplification module, the second end of the wave detection module is connected with the first end of the logic control element, the second end of the logic control element is connected with the third end of the switch module, and the third end of the logic control element is connected with the second communication module;

the power divider is provided with a first end, a second end and a third end; the first end of the power divider is connected with the amplifying module, the second end of the power divider is connected with the first end of the detecting module, and the third end of the power divider is connected with the modem;

the first attenuation module has a first end and a second end; the first end of the first attenuation module is connected with the second end of the detection module, and the second end of the first attenuation module is connected with the first end of the logic control element;

the second attenuation module has a first end and a second end; the first end of the second attenuation module is connected with the amplification module, and the second end of the second attenuation module is connected with the second communication module.

2. The radio frequency circuit according to claim 1, wherein the control signal supply module provides a bypass signal to the switch module to bypass the coexistence filter if a first target condition is satisfied;

wherein the first target condition comprises any one of:

the output power of the first communication module is less than a threshold and the second communication module is in a receive state.

3. The rf circuit of claim 1, wherein the control signal supply module provides a filter turn-on signal to the switch module to turn on the coexistence filter if a second target condition is met;

wherein the second target condition comprises any one of:

the output power of the first communication module is greater than a threshold value and the second communication module is in a receiving state;

the output power of the first communication module is less than a threshold and the second communication module is in a transmit state.

4. The radio frequency circuit according to claim 1, wherein the first communication module further comprises a coexistence filter and a switch module;

the modem, the amplifying module, the coexistence filter, the switch module and the 5G antenna are connected in sequence.

5. The radio frequency circuit according to claim 1, wherein the second communication module comprises a coexistence filter and a switch module;

the second communication module is a WIFI communication module, the WIFI communication module further comprises a WIFI chip and a WIFI antenna, and the WIFI chip, the coexistence filter, the switch module and the WIFI antenna are sequentially connected;

and the third end of the logic control element is connected with the WIFI chip.

6. The radio frequency circuit of claim 5, wherein the WIFI chip has a first terminal, a second terminal, a third terminal, and a fourth terminal;

the WIFI communication module further comprises a switching element, wherein the switching element is provided with a first end, a second end, a third end and a fourth end;

the first end of the WIFI chip is connected with the processing module, the second end of the WIFI chip is connected with the third end of the logic control element, and the third end and the fourth end of the WIFI chip are respectively connected with the first end and the second end of the switching element;

7. A radio frequency circuit, comprising: a processing module, a first communication module, a second communication module, a control signal supply module,

the first communication module is connected with the processing module;

the coexistence filter comprises a first coexistence filter and a second coexistence filter, and the switch module comprises a first switch module and a second switch module; the first communication module comprises a first coexistence filter and a first switch module, and the second communication module comprises a second coexistence filter and a second switch module;

the first communication module is a 5G communication module, the 5G communication module further comprises a modem, an amplification module and a 5G antenna, and the modem, the amplification module, the coexistence filter, the switch module and the 5G antenna are connected in sequence;

the second communication module is a WIFI communication module, the WIFI communication module further comprises a WIFI chip, a switch element and a WIFI antenna, and the WIFI chip, the switch element, the coexistence filter, the switch module and the WIFI antenna are sequentially connected;

the control signal supply module further comprises a detection module, a logic control element, a power divider, a first attenuation module and a second attenuation module;

the detection module is provided with a first end and a second end; the first end of the detection module is connected with the amplification module through the power divider, and the logic control element is provided with a first end, a second end and a third end; the second end of the detection module is connected with the first end of the logic control element through the first attenuation module, the second end of the logic control element is connected with the third end of the switch module, and the third end of the logic control element is connected with the WIFI chip;

the power divider is provided with a first end, a second end and a third end; a first end of the power divider is connected to the amplifying module, a second end of the power divider is connected to a first end of the detecting module, and a third end of the power divider is connected to the modem;

the WIFI chip is provided with a first end, a second end, a third end and a fourth end, and the switching element is provided with a first end, a second end, a third end and a fourth end; the first end of the WIFI chip is connected with the processing module, the second end of the WIFI chip is connected with the third end of the logic control element, and the third end and the fourth end of the WIFI chip are respectively connected with the first end and the second end of the switch element;

the second attenuation module has a first end and a second end; the first end of the second attenuation module is connected with the amplification module, and the second end of the second attenuation module is connected with the second end of the WIFI chip;

8. An electronic device, characterized in that the electronic device comprises a radio frequency circuit as claimed in any one of claims 1-7.