CN211880379U

CN211880379U - Radio frequency receiving module, radio frequency circuit and electronic equipment

Info

Publication number: CN211880379U
Application number: CN202021011286.0U
Authority: CN
Inventors: 孔根升
Original assignee: Vivo Mobile Communication Co Ltd
Current assignee: Vivo Mobile Communication Co Ltd
Priority date: 2020-06-04
Filing date: 2020-06-04
Publication date: 2020-11-06
Anticipated expiration: 2030-06-04

Abstract

The application discloses radio frequency receiving module, radio frequency circuit and electronic equipment belongs to electronic equipment technical field. The radio frequency receiving module comprises a module input end, a module output end, a filter, an amplifier and a bypass switch module; the input end of the filter is connected with the input end of the module, and the output end of the filter is connected to the input end of the amplifier through the bypass switch module; the output end of the amplifier is connected with the output end of the module through the bypass switch module; under the condition that the bypass switch module is in a first state, the radio-frequency signal output by the filter is amplified by the amplifier and then is output to the output end of the module; and under the condition that the bypass switch module is in a second state, the radio-frequency signal output by the filter is output to the module output end by a short-circuit line connected with the amplifier in parallel.

Description

Radio frequency receiving module, radio frequency circuit and electronic equipment

Technical Field

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

Background

In 5G mobile communication, a Sounding Reference Signal (SRS) function is added to a terminal hardware design, and the SRS is mainly used for uplink channel state information acquisition (frequency division duplex FDD) and downlink channel state information acquisition (TDD). The SRS antenna transmission of the 5G terminal system needs to be completed on the design of terminal hardware, so that the complexity of a radio frequency front-end system of the mobile terminal is increased. The SRS antenna switching mode comprises the following steps: 1T4R and 1T4R indicate that the terminal supports one Transmission (TX), and the TX can be switched over four antennas. In the process of implementing the present application, the inventor finds that at least the following problems exist in the prior art: in the currently common SRS hardware scheme capable of implementing the 1T4R function, an SRS switch needs to be arranged between an antenna and a radio frequency transmitting or receiving module, so that insertion loss is introduced, and radio frequency transmitting or receiving performance of a terminal is reduced.

SUMMERY OF THE UTILITY MODEL

An object of the embodiments of the present application is to provide a radio frequency receiving module, a radio frequency circuit, and an electronic device, which can solve the problem that a terminal implementing an SRS function needs to set an SRS switch between an antenna and a radio frequency transmitting or receiving module, thereby introducing insertion loss.

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 receiving module, which includes a module input end, a module output end, a filter, an amplifier, and a bypass switch module;

the input end of the filter is connected with the input end of the module, and the output end of the filter is connected to the input end of the amplifier through the bypass switch module;

the output end of the amplifier is connected with the output end of the module through the bypass switch module;

under the condition that the bypass switch module is in a first state, the radio-frequency signal output by the filter is amplified by the amplifier and then is output to the output end of the module; and under the condition that the bypass switch module is in a second state, the radio-frequency signal output by the filter is output to the module output end by a short-circuit line connected with the amplifier in parallel.

In a second aspect, an embodiment of the present application provides a radio frequency circuit, including M radio frequency receiving modules, radio frequency transceivers, radio frequency transmitting modules, a switch unit, and M antennas according to the first aspect;

the radio frequency transceiver comprises a transmitting port and M receiving ports, the transmitting port is connected with the input end of the radio frequency transmitting module, and the M receiving ports are respectively connected with the module output ends of the M radio frequency receiving modules through the switch unit;

the output end of the radio frequency transmitting module is connected with the module output ends of the M radio frequency receiving modules through the switch unit;

the module input ends of the M radio frequency receiving modules are respectively connected with the M antennas;

under the combined action of the switch unit and the bypass switch module, the transmitting port is connected with any one of the M antennas through the radio frequency transmitting module to complete the transmission of signals, the M receiving ports are respectively connected with the M antennas to complete the reception of signals, and M is a positive integer.

In a third aspect, an embodiment of the present application provides an electronic device, including the radio frequency circuit according to the second aspect.

In the embodiment of the application, when the bypass switch module in the radio frequency receiving module is in the second state, the radio frequency signal output by the filter connected with the antenna can be sent to the module output end by the short circuit connected with the low noise amplifier in parallel, so that an SRS switch between the radio frequency receiving module and the antenna is omitted, the insertion loss can be reduced, and the receiving performance can be improved.

Drawings

FIG. 1 is one of the schematic diagrams of a radio frequency architecture for implementing the 1T4R function;

FIG. 2 is a second schematic diagram of the radio frequency architecture for implementing the 1T4R function;

FIG. 3 is a second schematic diagram of the RF architecture for implementing the 1T4R function;

FIG. 4 is a block diagram of TX/RX in a radio architecture implementing the functionality of 1T 4R;

fig. 5 is a schematic structural diagram of an RX module in a radio frequency architecture implementing the function of 1T 4R;

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

fig. 7 is a second schematic structural diagram of an rf receiving module according to an embodiment of the present application;

fig. 8 is a third schematic structural diagram of an rf receiving module according to an embodiment of the present application;

fig. 9 is a fourth schematic structural diagram of an rf receiving module according to an embodiment of the present application;

FIG. 10 is a schematic diagram of an embodiment of a RF circuit;

FIG. 11 is a second schematic diagram of the RF circuit according to the embodiment of the present application;

FIG. 12 is a signal flow diagram illustrating the operation of the RF circuit of FIG. 11;

FIG. 13 is a third schematic diagram of an RF circuit according to an embodiment of the present invention;

fig. 14 is a block diagram of an electronic device according to an embodiment of the present application.

Detailed Description

The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are some, but not all, embodiments of the present application. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.

The terms first, second and the like in the description and in the claims of the present application are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used is interchangeable under appropriate circumstances such that the embodiments of the application are capable of operation in sequences other than those illustrated or described herein. In addition, "and/or" in the specification and claims means at least one of connected objects, a character "/" generally means that a preceding and succeeding related objects are in an "or" relationship.

In order to make those skilled in the art better understand the rf receiving module and the rf circuit of the embodiments of the present application, the following description is made.

In 5G mobile communication, current networking modes can be divided into two major categories: a stand-alone networking mode (SA) and a Non-stand-alone networking mode (NSA).

A 5G New Radio, NR, independent networking mode requires deployment of a 5G end-to-end New network, which includes a New access network (NR gNB) and a New Core network (Next Gen Core), and the 5G independently carries a complete Control-Plane (CP) and a User-Plane (UP), so that the 5G can work independently without relying on LTE and independently provides communication services for users.

In the non-independent networking mode, the 5G needs to rely on the existing LTE network to anchor the control plane on the LTE network (i.e. LTE carries control signaling), and for user plane data, the control plane is carried by the 5G NR and LTE together, or carried by the 5G NR independently. For the non-independent networking mode, the 5G needs to rely on the existing LTE network to work, and cannot independently provide complete service for users.

At present, operators require that a mobile terminal needs to support two modes, namely, an NSA mode and an SA mode, a 5G frequency band mainly applied to a current main real network mainly has three frequency bands, namely, N41/N78/N79 (all time division duplex TDD modes), in 5G mobile communication, a function of Sounding Reference Signal (SRS) is added to a terminal hardware design, and the SRS is mainly used for uplink channel state information acquisition (frequency division duplex FDD) and downlink channel state information acquisition (TDD). The SRS antenna transmission of the 5G terminal system needs to be completed on the design of terminal hardware, so that the complexity of a radio frequency front-end system of the mobile terminal is increased. There are roughly three types of SRS antenna switching methods (hereinafter, SRS antenna switching is performed for the 5G band) that are well-defined at present.

1T 2R: the terminal supports one path of Transmission (TX), and the TX can be switched between two antennas;

2T 4R: the terminal supports two paths of Transmission (TX), and the two paths of TX can be switched on two antennas respectively;

1T 4R: the terminal supports one path of Transmission (TX), and the TX can be switched on four antennas;

current operators require that the terminal must support either 1T2R for NSA or 2T4R for SA, which recommends 1T4R antenna routing. The radio frequency architecture of 1T4R is the most complex, and the scenario of 1T4R is mainly discussed here, and 1T2R and 2T4R are similar in principle to 1T4R, and the architecture is somewhat simpler and will not be discussed here.

The hardware implementation schemes of SRS in common use at present are as follows, as shown in fig. 1, fig. 2 and fig. 3. The 1T4R functions of NSA and SA can be achieved by all three schemes, fig. 1 using the cooperation of two 3P3T switches, fig. 2 using one 4P4T switch to achieve the same function of two 3P3T switches, and fig. 3 using one SP4T and three SP2T switches to achieve 1T 4R. The functions of the various blocks in fig. 1 are briefly described below.

1, ANT 1/2/3/4: four independent antennas, which work in the 5G frequency band specifically needed. The architecture in fig. 2 indicates that the terminal supports downlink 4 × 4MIMO, that is, when receiving downlink, the terminal needs to receive signals from four antennas simultaneously;

2, 3P 3T: a three pole, three throw switch has three ports (e.g., 1/2/3) at the input and 3 ports (e.g., 4/5/6) at the output. Port 1 may communicate with any of ports 4/5/6.

Ports

2 and 3 are similar;

3, TX/RX1 module: the radio frequency transmitting and receiving module is used for finishing final amplification of radio frequency signals, transmitting the amplified radio frequency signals to the antenna, primarily amplifying one path of received signals and transmitting the amplified signals to the radio frequency transceiver for processing;

4, RX 2/3/4: 3 independent receiving modules, which respectively perform primary amplification on signals received from the antenna and send the signals to a radio frequency transceiver for processing;

5, the radio frequency transceiver outputs an uplink TX transmitting signal and receives a downlink RX receiving signal;

and 6, the modem is used for demodulating the signals received by the radio frequency transceiver and sending the modulated signals carrying the information to the radio frequency transceiver. And meanwhile, the control work of devices (various switches, transmitting/receiving modules and the like) of a radio frequency transceiver and a radio frequency front end is carried out.

The three schemes in fig. 1 to fig. 3 are currently commonly used radio frequency architecture schemes for implementing 1T4R, wherein an internal composition diagram of a commonly used TX/RX1 module is shown in fig. 4, and includes a transmit/receive filter, a transmit/receive switching SP2T switch, a power amplifier in a transmit path, and a low noise small signal amplifier in a receive path. The internal components of the RX block are schematically shown in fig. 5, and include a receive filter and a low noise small signal amplifier in the receive path.

As can be seen from the above description, the scheme of fig. 1 introduces a 3P3T switch, and the 3P3T switch is located between the antenna and the rf transmitting/receiving module, which introduces insertion loss, and may degrade the rf transmitting/receiving performance of the terminal. The schemes in fig. 2 and fig. 3 also introduce insertion loss of 4P4T, SP4T and SP2T, which degrades radio frequency transmission/reception performance, and has a significant influence on reception sensitivity.

Based on this, as shown in fig. 6, the present application provides a radio frequency receiving module, which includes a module input 601 and a module output 602, a filter 603, an amplifier 604, and a bypass switch module 605;

the input of the filter 603 is connected to the module input 601, and the output of the filter is connected to the input of the amplifier 604 through the bypass switch module 605; the filter is in particular connected to an antenna in the radio frequency circuit implementing the SRS function, the filter receiving radio frequency signals from the antenna.

The output of the amplifier 604 is connected to the module output 602 through the bypass switch module 605. The amplifier 604 is embodied as a low noise amplifier.

When the bypass switch module 605 is in the first state, the rf signal output by the filter 603 is amplified by the amplifier 604 and then output to the module output 602; when the bypass switch module 605 is in the second state, the rf signal output from the filter 603 is output to the module output 602 through a short-circuit line connected in parallel with the amplifier 604.

The radio frequency receiving module of this application embodiment can make the radio frequency signal of wave filter output by through setting up the bypass switch module with amplifier parallelly connected short-circuit line sends to the module output has saved the SRS switch between radio frequency receiving module and the antenna, and then can reduce insertion loss, improves the receptivity.

As a first optional implementation manner, as shown in fig. 7, the bypass switch module includes:

a first switch 701, a second switch 702, and a third switch 703, wherein the first switch 701, the second switch 702, and the third switch 703 are single-pole single-throw switches, respectively;

a first end of the first switch 701 is connected to an output end of the filter, and a second end of the first switch 701 is connected to the amplifier;

a first end of the second switch 702 is connected to the module output end, and a second end of the second switch 702 is connected to the amplifier;

a first end of the third switch 703 is connected to the output end of the module, and a second end of the third switch 703 is connected to the output end of the filter.

In this implementation, the first state includes: the third switch 703 is in an open state, and the first switch 701 and the second switch 702 are in closed states respectively;

the second state includes: the third switch 703 is in a closed state, and the first switch 701 and the second switch 702 are in an open state, respectively.

In this implementation, the rf receiving module has two working modes, one of which is a normal receiving mode, that is, the first switch 701 and the second switch 702 in fig. 7 are turned on, the third switch 703 is turned off, and the rf receiving signal passes through the amplifier and is amplified; the other mode is that the amplifier works in a bypass mode, the third switch 703 is turned on, the first switch 701 and the second switch 702 are turned off, that is, the amplifier is not powered on, and has no amplification function, and is only equivalent to a section of low insertion loss transmission line, so that the insertion loss of a receiving path is reduced.

As a second alternative implementation, as shown in fig. 8, the bypass switch module includes:

a fourth switch 801 and a fifth switch 802, wherein the fourth switch 801 and the fifth switch 802 are single-pole double-throw switches;

the fixed end of the fourth switch 801 is connected to the output end of the filter, the first moving end of the fourth switch 801 is connected to the first moving end of the fifth switch 802, the second moving end of the fourth switch 801 is connected to the amplifier, the second moving end of the fifth switch 802 is connected to the amplifier, and the fixed end of the fifth switch 802 is connected to the output end of the module.

In this implementation, the first state includes: the fixed end of the fourth switch 801 is connected with the second movable end of the fourth switch 801, and the fixed end of the fifth switch 802 is connected with the second movable end of the fifth switch 802;

the second state includes: the fixed end of the fourth switch 801 is connected to the first movable end of the fourth switch 801, and the fixed end of the fifth switch 802 is connected to the first movable end of the fifth switch 802.

In this implementation, the low noise amplifier is operated in a bypass mode by a low insertion loss single pole double throw switch.

As a third alternative implementation, as shown in fig. 9, the module output terminals include a first module output terminal 6021 and a second module output terminal 6022;

the bypass switch module includes:

a sixth switch 901, a seventh switch 902 and an eighth switch 903, where the sixth switch 901 and the seventh switch 902 are single-pole single-throw switches, and the eighth switch 903 is a single-pole double-throw switch;

a fixed end of the eighth switch 903 is connected to the output end of the filter, a first moving end of the eighth switch 903 is connected to a first end of the sixth switch 901, and a second moving end of the eighth switch 903 is connected to the amplifier; a second terminal of the sixth switch 901 is connected to the output terminal of the first module, a first terminal of the seventh switch 902 is connected to the amplifier, and a second terminal of the seventh switch 902 is connected to the output terminal of the second module.

In this implementation, the first state includes: the sixth switch is turned off, the seventh switch is turned on, and the moving end of the eighth switch is connected with the second moving end of the eighth switch;

the second state includes: the sixth switch is closed, the seventh switch is opened, and the moving end of the eighth switch is connected with the first moving end of the eighth switch.

In this implementation, the bypass mode of operation of the amplifier is implemented by two single pole, single throw switches and one single pole, double throw switch.

An embodiment of the present application further provides a radio frequency circuit, as shown in fig. 10, including M (may be specifically 4) radio frequency receiving modules 1001 as described above, and further including: the radio frequency transceiver 1002, the radio frequency transmission module 1006, the switch unit 1005 and the M antennas 1003.

The radio frequency circuitry also includes a modem 1004 coupled to the radio frequency transceiver 1002.

The rf transceiver 1002 includes a transmitting port (TX) connected to an input end of the rf transmitting module 1006 and M receiving ports (RX) connected to module output ends of the M rf receiving modules 1001 through the switch unit 1005;

the output end of the radio frequency transmitting module 1006 is connected to the module output ends of the M radio frequency receiving modules through the switch unit; the radio frequency transmitting module comprises: a power amplifier.

The module input ends of the M radio frequency receiving modules are respectively connected with the M antennas.

Under the combined action of the switch unit 1005 and the bypass switch module, the transmitting port is connected to any one of the M antennas through the radio frequency transmitting module to complete transmission of signals, the M receiving ports are respectively connected to the M antennas to complete reception of signals, and M is a positive integer.

The switching unit may be an SRS switching unit, and the radio frequency circuit may have an SRS function by the SRS switching unit.

In the radio frequency circuit, an SRS switch is not required to be arranged between the radio frequency receiving module and the antenna, so that the insertion loss of a receiving access can be effectively reduced, and the receiving sensitivity is improved.

Further, the radio frequency receiving module comprises a first switch, a second switch and a third switch, or comprises a fourth switch and a fifth switch; as shown in fig. 11 (fig. 11 shows a case where the rf receiving module includes a first switch, a second switch, and a third switch), the rf circuit includes M rf receiving modules; m is specifically 4.

As an alternative implementation, the switch unit includes the M single-pole double-throw switches SP2T and a first single-pole multi-throw switch, and the first single-pole multi-throw switch includes the M moving terminals; the first single-pole multi-throw switch is specifically a single-pole four-throw switch;

each moving end of the first single-pole multi-throw switch is correspondingly connected with the first moving end of each single-pole double-throw switch;

the second moving end of each single-pole double-throw switch in the switch unit is connected with a receiving port of the radio frequency transceiver in a one-to-one correspondence mode, and the receiving port comprises an RX1 port, an RX2 port, an RX3 port and an RX4 port;

and the immobile end of each single-pole double-throw switch in the switch unit is connected with the module output end of each radio frequency receiving module.

In the radio frequency circuit of the embodiment of the present application, as shown in fig. 11, the radio frequency Transmission (TX) module 1006 only includes a radio frequency power amplifier, the four radio frequency receiving modules have the same function, and each radio frequency receiving module includes a transmission/reception filter and a low noise amplifier with bypass function. The transmitting signal is amplified by the TX module and is connected to the four radio frequency receiving modules with bypass functions through one SP4T switch and four SP2T switches, so that the SRS function that the transmitting signal can be switched to 1T4R of four antennas is realized. The 4 radio frequency receiving modules with bypass function are connected to the radio frequency transceiver through 4 SP2T switches. The 4 antennas are directly connected to the four radio frequency receiving modules with bypass functions.

In the radio frequency circuit shown in fig. 11, since the SRS switches between the four antennas and the radio frequency receiving module are removed, the loss between the antennas and the low noise amplifier in the radio frequency receiving module is reduced, according to the theory of the receiver, the loss between the first-stage low noise amplifier of the receiver and the antennas is reduced, and the receiving sensitivity of the system can be directly improved by the same amplitude, so that the capability of the receiver to detect weak signals is improved. In order to realize the SRS function of 1T4R, the output of the TX module needs one SP4T switch, 4 SP2T switches are needed between the rf receiving module (module) and the rf transceiver, and the SP2T switch is placed between the output of the low noise amplifier of the rf receiving module and the rf transceiver, which does not affect the receiving sensitivity of the system. According to typical insertion loss data of 3P3T/4P4T or SP4T + SP2T switches, the architecture of FIG. 11 can improve the sensitivity of the receiving path of the 5G terminal with the SRS function by 0.8-1.6 dB, and the sensitivity of each receiving path is improved by 0.8-1.6 dB, so that the system benefit is very obvious, and the downlink throughput under the weak signal environment of the terminal can be improved.

The flow of the operating signals of the rf circuit shown in fig. 11 is schematically illustrated in fig. 12. The solid line with arrows indicates the flow of the operating signal when the radio frequency signal is transmitted, and the dotted line with arrows indicates the flow of the operating signal when the radio frequency signal is received. In the related art, several frequency bands N41/N78/N79 for 5G commercial use are of TDD system, and TX/RX is of same frequency and works in a time-sharing mode. When the TX transmitting module operates, the low noise amplifiers of the four rf receiving modules in fig. 12 are in bypass mode, and the transmitting signal reaches the antenna through the bypass path. When the rf receiving modules work, the four rf receiving modules in fig. 12 work in a normal amplification state, and after amplifying the received signals, the amplified signals are sent to the rf transceiver for further processing through the SP2T switch. That is, the transmitting/receiving signal will pass through the rf receiving module, and only when transmitting, the lna of the rf receiving module is in bypass mode, which is equivalent to a section of low-insertion loss transmission line, and reaches the antenna through the transmitting/receiving filter. When receiving, the working state of the radio frequency receiving module is consistent with the traditional scheme and is in an amplifying state. And the time-sharing multiplexing of radio frequency transmitting and receiving radio frequency front-end paths is realized through an SP2T switch between the radio frequency receiving module and the radio frequency transceiver.

The radio frequency circuit provided by the embodiment of the application has the advantages that the radio frequency receiving module with the bypass mode is introduced, a switch which needs to be added due to the SRS function between the radio frequency receiving module and the antenna is eliminated, so that the insertion loss of a receiving path is reduced, the sensitivity of four receiving paths of a 5G frequency band can be improved by about 0.8-1.6 dB, the throughput under weak signals is improved, and the user experience is improved. The four radio frequency receiving modules can be flexibly placed close to the antenna according to different PCB layout conditions, and the improvement of the receiving performance of the system is also helpful.

Further, when the radio frequency receiving module comprises a sixth switch, a seventh switch and an eighth switch; the radio frequency circuit comprises M radio frequency receiving modules; m is specifically 4.

As another alternative implementation, as shown in fig. 13, the switch unit includes:

a second single-pole-multiple-throw switch comprising the M moving terminals; the second single pole, multiple throw switch is a single pole, four throw switch SP 4T.

Each moving end of the second single-pole multi-throw switch is connected with the output end of the first module of each radio frequency receiving module in a one-to-one correspondence mode;

and the receiving ports of the radio frequency transceivers are correspondingly connected with the output ends of the second modules of each radio frequency receiving module one by one.

In fig. 13, solid lines with arrows indicate the flow of the operation signal when the radio frequency signal is transmitted, and dotted lines with arrows indicate the flow of the operation signal when the radio frequency signal is received.

Compared with the radio frequency circuit shown in fig. 11, the radio frequency circuit in the implementation mode can also realize the SRS function and reduce the insertion loss, and simultaneously removes the SP2T switch, thereby having higher integration level.

An embodiment of the present application further provides an electronic device, including the radio frequency circuit described above.

It should be noted that, the electronic device according to the embodiment of the present application can implement all implementation manners in the foregoing radio frequency circuit embodiment, and details are not described here again.

Fig. 14 is a schematic hardware structure diagram of an electronic device implementing an embodiment of the present application.

The electronic device 1400 includes, but is not limited to: radio unit 1401, network module 1402, audio output unit 1403, input unit 1404, sensor 1405, display unit 1406, user input unit 1407, interface unit 1408, memory 1409, and processor 1410.

Those skilled in the art will appreciate that the electronic device 1400 may further comprise a power source (e.g., a battery) for supplying power to various components, and the power source may be logically connected to the processor 1410 via a power management system, so as to implement functions of managing charging, discharging, and power consumption via the power management system. The electronic device structure shown in fig. 14 does not constitute a limitation of the electronic device, and the electronic device may include more or less components than those shown, or combine some components, or arrange different components, and thus, the description is not repeated here.

The embodiments in the present specification are described in a progressive manner, each embodiment focuses on differences from other embodiments, and the same and similar parts among the embodiments are referred to each other.

While preferred embodiments of the present application have been described, additional variations and modifications of these embodiments may occur to those skilled in the art once they learn of the basic inventive concepts. Therefore, it is intended that the appended claims be interpreted as including the preferred embodiment and all such alterations and modifications as fall within the true scope of the embodiments of the application.

Finally, it should also be noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or terminal that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or terminal. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other like elements in a process, method, article, or terminal that comprises the element.

While the present embodiments have been described with reference to the accompanying drawings, it is to be understood that the invention is not limited to the precise embodiments described above, which are meant to be illustrative and not restrictive, and that various changes may be made therein by those skilled in the art without departing from the spirit and scope of the invention as defined by the appended claims.

Claims

1. A radio frequency receiving module is characterized by comprising a module input end, a module output end, a filter, an amplifier and a bypass switch module;

2. The rf receive module of claim 1, wherein the bypass switch module comprises:

the first switch, the second switch and the third switch are single-pole single-throw switches respectively;

a first end of the first switch is connected with an output end of the filter, and a second end of the first switch is connected with the amplifier;

the first end of the second switch is connected with the output end of the module, and the second end of the second switch is connected with the amplifier;

the first end of the third switch is connected with the output end of the module, and the second end of the third switch is connected with the output end of the filter;

the first state includes: the third switch is in an open state, and the first switch and the second switch are in closed states respectively;

the second state includes: the third switch is in a closed state, and the first switch and the second switch are in open states, respectively.

3. The rf receive module of claim 1, wherein the bypass switch module comprises:

a fourth switch and a fifth switch, the fourth switch and the fifth switch being single pole double throw switches;

the fixed end of the fourth switch is connected with the output end of the filter, the first movable end of the fourth switch is connected with the first movable end of the fifth switch, the second movable end of the fourth switch is connected with the amplifier, the second movable end of the fifth switch is connected with the amplifier, and the fixed end of the fifth switch is connected with the output end of the module;

the first state includes: the fixed end of the fourth switch is connected with the second movable end of the fourth switch, and the fixed end of the fifth switch is connected with the second movable end of the fifth switch;

the second state includes: the fixed end of the fourth switch is connected with the first movable end of the fourth switch, and the fixed end of the fifth switch is connected with the first movable end of the fifth switch.

4. The radio frequency receive module of claim 1, wherein the module output comprises a first module output and a second module output;

the bypass switch module includes:

the sixth switch, the seventh switch and the eighth switch are single-pole single-throw switches, and the eighth switch is a single-pole double-throw switch;

the fixed end of the eighth switch is connected with the output end of the filter, the first movable end of the eighth switch is connected with the first end of the sixth switch, and the second movable end of the eighth switch is connected with the amplifier; a second end of the sixth switch is connected with the output end of the first module, a first end of the seventh switch is connected with the amplifier, and a second end of the seventh switch is connected with the output end of the second module;

the first state includes: the sixth switch is turned off, the seventh switch is turned on, and the moving end of the eighth switch is connected with the second moving end of the eighth switch;

5. A radio frequency circuit, comprising M radio frequency receiving modules, radio frequency transceivers, radio frequency transmitting modules, switch units and M antennas according to any one of claims 1 to 4;

6. The RF circuit of claim 5, wherein the RF receiving module comprises a first switch, a second switch and a third switch, or comprises a fourth switch and a fifth switch;

the switch unit comprises the M single-pole double-throw switches and a first single-pole multi-throw switch, and the first single-pole multi-throw switch comprises the M movable terminals;

the second moving end of each single-pole double-throw switch in the switch unit is correspondingly connected with the receiving port of the radio frequency transceiver one by one;

7. The RF circuit of claim 5, wherein the RF receiving module comprises a sixth switch, a seventh switch and an eighth switch;

the switching unit includes:

a second single-pole-multiple-throw switch comprising the M moving terminals;

8. An electronic device comprising a radio frequency circuit as claimed in any one of claims 5 to 7.