Radio frequency circuit and client front-end equipment

Abstract

The embodiment of the invention provides a radio frequency circuit and client front-end equipment, and is applied to the field of communication. The radio frequency circuit comprises a plurality of WIFI chips, at least one FEM, at least one antenna, a switch module and a control module, wherein the at least one WIFI chip supports a plurality of frequency bands; and for each FEM, the first end of the FEM is connected with the WIFI chip corresponding to the frequency band supported by the FEM, and the second end of the FEM is connected with the antenna corresponding to the frequency band supported by the FEM. The first end of the switch module is connected with the target WIFI chip, and the second end of the switch module is connected with the first end of the target FEM; the first end of the control module is connected with the second end of the target FEM, and the second end of the control module is connected with the third end of the switch module; and the control module is used for controlling the switch module to change the working state of the target WIFI chip for the target frequency band. Therefore, the technical effect of improving the data throughput of the client front-end equipment is achieved.

Description

Technical Field

[0001] The present application relates to the field of communications, and in particular to a radio frequency circuit and a customer front-end device. Background Art

[0002] In order to meet the network access requirements of modern communications, Customer Premises Equipment (CPE) provides simple settings and usage methods, and connects multiple communication devices by creating a local area network, so that communication devices can connect to the Internet. Due to the expansion of information in the Internet era, CPE requires a larger data throughput in order to provide a more stable and efficient network connection.

[0003] In the prior art, in order to improve the data throughput of CPE, the frequency bands of WIFI signals supported by CPE are increased as much as possible. The specific method is: using multiple independent WIFI chips, each WIFI chip corresponding to a frequency band, each WIFI chip is connected to a RF front-end module (Front-End Module, FEM) corresponding to a frequency band, and the FEM is connected to the antenna corresponding to the frequency band, so that CPE can process WIFI signals of multiple frequency bands.

[0004] Since each frequency band in the prior art corresponds to a single channel, the data throughput of the CPE is still limited when processing large amounts of data. Summary of the invention

[0005] The embodiments of the present application provide a radio frequency circuit and a customer premises equipment to achieve the effect of improving the data throughput of the customer premises equipment.

[0006] In a first aspect, an embodiment of the present application provides a radio frequency circuit, including:

[0007] Multiple WIFI chips, at least one FEM, and at least one antenna;

[0008] Wherein, at least one WIFI chip supports multiple frequency bands;

[0009] For each FEM, a first end of the FEM is connected to a WIFI chip corresponding to a frequency band supported by the FEM, and a second end of the FEM is connected to an antenna corresponding to a frequency band supported by the FEM.

[0010] In a possible implementation, the circuit further includes a switch module and a control module;

[0011] A first end of the switch module is connected to the target WIFI chip, and a second end of the switch module is connected to a first end of the target FEM;

[0012] The first end of the control module is connected to the second end of the target FEM, and the second end of the control module is connected to the third end of the switch module;

[0013] The control module is used to control the switch module to change the working state of the target WIFI chip for the target frequency band;

[0014] The target FEM is a FEM in at least one FEM connected to multiple WIFI chips, the target WIFI chip is a WIFI chip corresponding to a target frequency band supported by the target FEM in the multiple WIFI chips, and the target frequency band is a frequency band supported by the target FEM.

[0015] In a possible implementation, the switch module includes a first single-pole double-throw switch;

[0016] The first end of the first single-pole double-throw switch is the second end of the switch module, and the second end and the third end of the first single-pole double-throw switch are both the first end of the switch module.

[0017] In a possible implementation, the switch module further includes at least one second single-pole double-throw switch, and the at least one second single-pole double-throw switch is connected in series;

[0018] The first end of the first single-pole double-throw switch is the second end of the switch module, the second end of the first single-pole double-throw switch is the first end of the switch module, and the third end of the first single-pole double-throw switch is connected to the first end of at least one second single-pole double-throw switch;

[0019] The second end of the at least one second single-pole double-throw switch is the first end of the switch module.

[0020] In a possible implementation, the control module is used to monitor a frequency band path formed when the target FEM and the current target WIFI chip connected to the target FEM are connected, and obtain a performance indicator value of the frequency band path;

[0021] The performance index is the performance index value of the target frequency band when the target FEM and the target WIFI chip are connected.

[0022] In a possible implementation manner, the control module is used to adjust the switch module to adjust the working state of the current target WIFI chip connected to the target FEM for the target frequency band to non-working, and adjust the working state of any other target WIFI chip for the target frequency band to working when the performance indicator value of the target frequency band corresponding to the target FEM does not reach the preset performance indicator value;

[0023] The target WIFI chip adjusts the frequency band path for switching the target frequency band according to the working state of the target frequency band.

[0024] In a possible implementation, the control module is used to adjust the switch module according to the switching instruction input by the user, so that the working state of the current target WIFI chip connected to the target FEM chip for the target frequency band is adjusted to not working, and the working state of any other target WIFI chip for the target frequency band is adjusted to working.

[0025] In a possible implementation, the FEM includes a power amplifier, a low noise amplifier, a power regulator, a first transmitting unit, and a first receiving unit;

[0026] The WIFI chip includes a power control pin, a noise control pin, a power control pin, a second transmitting unit, and a second receiving unit;

[0027] Wherein, the first end of the power amplifier is connected to the power control pin, the first end of the low noise amplifier is connected to the noise control pin, the first end of the power regulator is connected to the power control pin, the first end of the first transmitting unit is connected to the second transmitting unit, and the first end of the first receiving unit is connected to the second receiving unit;

[0028] The first end of the power amplifier, the first end of the low noise amplifier, the first end of the power regulator, the first end of the first transmitting unit and the first end of the first receiving unit are all first ends of the FEM.

[0029] In a possible implementation manner, the performance indicator includes at least one of the following: RSSI, SNR, data transmission rate, packet loss rate, and connection interruption frequency.

[0030] In a second aspect, an embodiment of the present application provides a customer premises device, comprising: a radio frequency circuit according to any one of the first aspects.

[0031] The radio frequency circuit and customer front-end device provided in the embodiment of the present application adopt a WIFI chip supporting multiple frequency bands as a processing chip for WIFI signals, and for each FEM, connect each FEM with the WIFI chip and antenna corresponding to the frequency band it supports; when there are multiple WIFI chips corresponding to the target frequency band supported by the FEM, they are determined as the target FEM and the target WIFI chip, and the target FEM and the target WIFI chip are connected through a switch module; the switch module is controlled by the control module to realize the switching of the working state of the target chip for the target frequency band. The present application adopts a WIFI chip supporting multiple frequency bands, and uses a switch module to connect the WIFI chip supporting the same frequency band to the FEM corresponding to the frequency band, and uses the control module to control the switch module to realize the switching between multiple WIFI chips supporting the same frequency band. Compared with the existing technology, the use of WIFI chips that support multiple frequency bands reduces the number of WIFI chips used on customer front-end devices, thereby reducing the hardware overhead of equipment development; at the same time, by connecting multiple WIFI chips and FEM, multi-channel support for the target frequency band is achieved, and the target WIFI chip is switched using the switch module and the control module. The channel can be switched when the current channel performance of the target frequency band is poor. More frequency bands can be supported within a limited hardware space and the stability of each frequency band can be maintained, thereby achieving the effect of improving the data throughput of customer front-end devices. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the present application and, together with the description, serve to explain the principles of the present application.

[0033] Figure 1 A schematic diagram of the structure of the radio frequency circuit provided in the embodiment of the present application Figure 1 ;

[0034] Figure 2 A schematic diagram of the structure of a switch module applied to a radio frequency circuit proposed in an embodiment of the present application;

[0035] Figure 3 A schematic diagram of the structure of the radio frequency circuit provided in the embodiment of the present application Figure 2 ;

[0036] Figure 4 A schematic diagram of the structure of a radio frequency circuit supporting three bands provided in an embodiment of the present application;

[0037] Figure 5 A signal transmission schematic diagram for a radio frequency circuit to send a signal;

[0038] Figure 6 A signal transmission schematic diagram of a radio frequency circuit receiving a signal.

[0039] The above drawings have shown clear embodiments of the present application, which will be described in more detail later. These drawings and text descriptions are not intended to limit the scope of the present application in any way, but to illustrate the concept of the present application to those skilled in the art by referring to specific embodiments. DETAILED DESCRIPTION

[0040] Exemplary embodiments will be described in detail herein, examples of which are shown in the accompanying drawings. When the following description refers to the drawings, the same numbers in different drawings represent the same or similar elements unless otherwise indicated. The implementations described in the following exemplary embodiments do not represent all implementations consistent with the present application. Instead, they are merely examples of devices and methods consistent with some aspects of the present application as detailed in the appended claims.

[0041] First, the terms involved in this application are explained:

[0042] Customer Premises Equipment (CPE): refers to the terminal equipment used to access the network. These devices can be routers, modems, switches, etc., which users use in their homes or offices to connect to the Internet service provider's network. CPE equipment usually has the following functions: data transmission, connection management, network security, and wireless signal coverage.

[0043] Front-End Module (FEM): It is a key component in CPE equipment and is mainly responsible for amplifying and processing wireless signals. Specific functions include: power amplification, low-noise amplification, and switching functions.

[0044] WIFI chip: It is the core component of CPE equipment to realize wireless network communication. It is responsible for processing the sending and receiving of data packets and performing related tasks of wireless protocols.

[0045] Multiple Input Multiple Output (MIMO): refers to a wireless communication technology that can improve data transmission rate and signal quality by using multiple antennas at the transmitting and receiving ends.

[0046] Antenna: Used to radiate wireless signals into the air and receive signals from the air back to the device; modern CPE devices are usually equipped with multiple antennas to support MIMO technology.

[0047] Received Signal Strength Indicator (RSSI): is a measure of wireless signal strength, usually in decibel milliwatts (dBm). It reflects the power level of the signal received by the device. A high RSSI value indicates good signal strength and high communication quality; a low RSSI value may result in unstable connection or reduced speed.

[0048] Signal-to-Noise Ratio (SNR): It is the ratio between the signal strength and the background noise strength, usually expressed in decibels (dB). It measures the clarity of the received signal. A higher SNR value means that the signal is stronger relative to the noise and the transmission quality is higher; conversely, it may lead to an increase in the bit error rate.

[0049] Data transfer rate: This number is the rate at which a device can successfully transfer data within a certain period of time, expressed in Mbps (megabits per second) or Gbps (gigabits per second). It directly affects the user experience, such as download speed, video fluency, etc. In high-bandwidth applications, such as 4K video streaming, higher data transfer rates are required.

[0050] Packet Loss Rate: refers to the ratio of data packets lost during data transmission to the total number of data packets sent, expressed as a percentage. A high packet loss rate usually leads to a decrease in network performance, delays, freezes, or data retransmissions, which is particularly important in real-time applications (such as video conferencing).

[0051] Connection interruption frequency: refers to the number of connection interruptions that occur within a certain period of time, usually measured per hour, day, or month. High frequency of connection interruptions will seriously affect the user experience, especially in application scenarios that require continuous connection, such as online games or cloud services.

[0052] In the prior art, due to the increase in network access requirements, the amount of data that the customer front-end equipment needs to process increases, so the demand for data throughput per unit time of the customer front-end equipment increases. In the prior art, the multi-frequency processing mechanism of the customer front-end equipment can effectively improve the overall network data throughput; at the same time, the use of MIMO technology can combine the advantages of multiple frequency bands to further improve data throughput.

[0053] However, in the prior art, the method of realizing multi-band is mainly to realize multiple frequency bands by using multiple independent WIFI chips, and each frequency band has a corresponding FEM and antenna, so as to assemble the frequency band path corresponding to the frequency band. For example, there is a customer front-end device that supports three frequency bands, and there are WIFI chips and FEMs corresponding to the three frequency bands in the device; if the WIFI chip corresponding to a certain frequency band is damaged or has poor performance, the frequency band path corresponding to the frequency band will be disconnected or unstable, and the current customer front-end device will not be able to provide a stable network for users using the frequency band, thereby reducing the overall data throughput of the customer front-end device. Therefore, there is a technical problem of low data throughput of the customer front-end device in the prior art.

[0054] In response to the above technical problems, the present application proposes the following technical concept: In the prior art, each frequency band has a single path, and the limitation of the frequency band path leads to the situation that the data throughput of the overall device is the first. Therefore, multiple frequency band paths can be created for each frequency band, and the switching between multiple paths can be used to ensure the data throughput of the customer front-end; at the same time, in order to reduce the high power consumption caused by too many WIFI chips and connection circuits, a WIFI chip that supports multiple frequency bands is used to process the network signal in the customer front-end device. Design a multi-path frequency band RF circuit and apply it to the customer front-end device for multi-frequency processing. While using the characteristics of multiple paths to ensure the stability of each frequency band, it realizes multi-band signal processing, thereby achieving the effect of improving the data throughput of the customer front-end device.

[0055] The technical solution of the present application and how the technical solution of the present application solves the above-mentioned technical problems are described in detail below with specific embodiments. The following specific embodiments can be combined with each other, and the same or similar concepts or processes may not be repeated in some embodiments. The embodiments of the present application will be described below in conjunction with the accompanying drawings.

[0056] Figure 1 A schematic diagram of the structure of the radio frequency circuit provided in the embodiment of the present application Figure 1 ,like Figure 1 As shown, the radio frequency circuit includes: a plurality of WIFI chips 110 , at least one FEM 120 , at least one antenna 130 , a switch module 140 and a control module 150 .

[0057] In this embodiment, at least one WIFI chip 110 supports multiple frequency bands.

[0058] It should be noted that the at least one antenna mentioned in the present application refers to the design of the radio frequency circuit using MIMO technology, which uses multiple antennas to simultaneously process different data streams to improve the overall data transmission rate.

[0059] For each FEM 120 , a first end of the FEM 120 is connected to a WIFI chip 110 corresponding to a frequency band supported by the FEM 120 , and a second end of the FEM 120 is connected to an antenna 130 corresponding to a frequency band supported by the FEM 120 .

[0060] In a possible implementation, a first end of the switch module 140 is connected to the target WIFI chip 110 , and a second end of the switch module 140 is connected to a first end of the target FEM 120 ;

[0061] A first end of the control module 150 is connected to a second end of the target FEM 120 , and a second end of the control module 150 is connected to a third end of the switch module 140 ;

[0062] The control module 150 is used to control the switch module 140 to change the working state of the target WIFI chip 110 for the target frequency band;

[0063] The target FEM 120 is a FEM 120 connected to multiple WIFI chips 110 among at least one FEM 120 . The target WIFI chip 110 is a WIFI chip 110 corresponding to a target frequency band supported by the target FEM 120 among the multiple WIFI chips 110 . The target frequency band is a frequency band supported by the target FEM 120 .

[0064] In this embodiment, the multiple frequency bands supported by the WIFI chip 110 may be: 2.4G, 5G, and 6G. The target frequency band refers to the frequency band supported by the target FEM 120. In this embodiment, a target FEM may support one frequency band or multiple frequency bands. It should be noted that this application only describes the case where the target FEM 120 supports one frequency band, and this application does not limit the frequency band supported by the WIFI chip 110.

[0065] In this embodiment, one target FEM 120 can be connected to multiple target WIFI chips 110 , one target chip 110 can be connected to multiple FEMs 110 according to the supported frequency band type, one antenna 130 is connected to one FEM 120 , one FEM 120 can be connected to one antenna 130 or multiple antennas 130 through a specific selection circuit.

[0066] In a possible implementation, the control module is used to monitor a frequency band path formed when the target FEM and the current target WIFI chip connected to the target FEM are connected, and obtain a performance indicator value of the frequency band path;

[0067] The performance index is the performance index value of the target frequency band when the target FEM and the target WIFI chip are connected.

[0068] In this embodiment, the frequency band path refers to a frequency band data path from the target WIFI chip 110 through the switch module 140, the target FEM 120 to the antenna 130, which is used to transmit the data of the WIFI chip 110 to the antenna 130 via the path, and to send it outward via the antenna 130; and to enable the WIFI chip 110 to receive external data from the antenna 130. The switching of the frequency band path refers to the target FEM 120 switching the target WIFI chip 110 for frequency band data processing.

[0069] In a possible implementation, the control module 150 is used to adjust the switch module 140 to adjust the working state of the current target WIFI chip 110 connected to the target FEM 120 for the target frequency band to non-working, and adjust the working state of any other target WIFI chip 110 for the target frequency band to working when the performance indicator value of the target frequency band corresponding to the target FEM 120 does not reach the preset performance indicator value;

[0070] The target WIFI chip 110 adjusts the frequency band path for switching the target frequency band according to the working state of the target frequency band.

[0071] In this embodiment, the performance indicator includes at least one of the following: received signal strength indicator RSSI, signal-to-noise ratio SNR, data transmission rate, packet loss rate, and connection interruption frequency.

[0072] For example, when the performance indicator is RSSI, a performance indicator value of -60 dBm corresponding to RSSI is considered a good signal, while -80 dBm belongs to the marginal area and may affect calls or data transmission. When the performance indicator is SNR, a performance indicator value corresponding to SNR greater than 25 dB is generally considered good enough to support good data transmission, while less than 10 dB may cause connection problems. When the performance indicator is the maximum transmission rate, the maximum transmission rate is 300Mbps, which means that under ideal conditions, the customer front-end equipment or RF circuit can transmit data at this rate. When the performance indicator is packet loss rate, the performance indicator value corresponding to the packet loss rate is 2%, which means that 2 out of every 100 data packets are lost, which may cause a significant decrease in communication quality.

[0073] Exemplarily, there is a target FEM in the RF circuit, and the frequency band corresponding to the target FEM is 5G; and there are three target WIFI chips that can be used to process the 5G frequency band. The three WIFI chips are: a first WIFI chip, a second WIFI chip, and a third WIFI chip. The performance indicator is the connection interruption frequency; and the preset performance indicator value is that the connection interruption frequency is less than 5 times a day. The WIFI chip currently connected to the target FEM is the first WIFI chip, and the control module determines the interruption frequency of the frequency band channel of the current connection performance when processing data. The current connection interruption frequency is obtained as 6 times a day, which does not reach the preset performance indicator value, indicating that there is an interruption when the first WIFI chip is used for data processing. Therefore, a WIFI chip is selected from the second WIFI chip and the third WIFI chip as the WIFI chip to be switched, and the control module is used to control the switch module to change the working state of the WIFI chip for the 5G frequency band, and the working state of the first WIFI chip for the 5G frequency band is changed to not working, and the working state of the second WIFI chip or the third WIFI chip for the 5G frequency band is changed to working.

[0074] In a possible implementation, the control module 150 is used to adjust the switch module 140 according to the switching instruction input by the user, so that the working state of the current target WIFI chip 110 connected to the target FEM 120 for the target frequency band is adjusted to not working, and the working state of any other target WIFI chip 110 for the target frequency band is adjusted to working.

[0075] In this embodiment, in addition to changing the working state of the WIFI chip for the target frequency band based on the pre-set switching logic and preset performance indicator value in the control module, the WIFI chip can also adjust the working state of the target frequency band by receiving a switching instruction output by the user.

[0076] Exemplarily, there is a target FEM in the RF circuit and two WIFI chips corresponding to the FEM: a first WIFI chip and a second WIFI chip; the chip currently connected to the target FEM is the first WIFI chip. When the user's switching instruction indicates chip switching, the working state of the first WIFI chip for the target frequency band is changed to not working, and the working state of the second WIFI chip for the target frequency band is changed to working. It should be noted that the user input switching to zero can also indicate switching a specified chip, and the control module can switch between specified WIFI chips based on the user's switching instruction.

[0077] The embodiment of the present application proposes a radio frequency circuit. A WIFI chip supporting multiple frequency bands is used as a processing chip for WIFI signals. For each FEM, each FEM is connected to a WIFI chip and an antenna corresponding to the frequency band it supports; when there are multiple WIFI chips corresponding to the target frequency band supported by the FEM, they are determined as the target FEM and the target WIFI chip, and the target FEM and the target WIFI chip are connected through a switch module; the switch module is controlled by the control module to realize the switching of the working state of the target chip for the target frequency band. The present application adopts a WIFI chip supporting multiple frequency bands, and at the same time uses a switch module to connect a WIFI chip supporting the same frequency band to the FEM corresponding to the frequency band, and uses a control module to control the switch module to realize the switching between multiple WIFI chips supporting the same frequency band. Compared with the existing technology, the use of WIFI chips that support multiple frequency bands reduces the number of WIFI chips used on customer front-end devices, thereby reducing the hardware overhead of equipment development; at the same time, by connecting multiple WIFI chips and FEM, multi-channel support for the target frequency band is achieved, and the target WIFI chip is switched using the switch module and the control module. The channel can be switched when the current channel performance of the target frequency band is poor. More frequency bands can be supported within the priority hardware space and the stability of each frequency band can be maintained, thereby achieving the effect of improving the data throughput of the customer's front-end equipment.

[0078] Figure 2 Schematic diagram of the structure of the switch module applied to the radio frequency circuit proposed in the embodiment of the present application. Figure 2 As shown, the switch module 200 includes: a first single-pole double-throw switch 210 and a second single-pole double-throw switch 220 ; the radio frequency circuit includes a target chip 230 and a target FEM 240 .

[0079] When only the first SPDT switch 210 exists in the switch module 200 , the first end of the first SPDT switch 210 is the second end of the switch module 200 , and the second end and the third end of the first SPDT switch 210 are both the first end of the switch module 200 .

[0080] When there is a second single-pole double-throw switch 220 in the switch module 200, the switch module 200 also includes at least one second single-pole double-throw switch 220, and the at least one second single-pole double-throw switch 220 is connected in series; the first end of the first single-pole double-throw switch 210 is the second end of the switch module 200, the second end of the first single-pole double-throw switch 210 is the first end of the switch module 200, and the third end of the first single-pole double-throw switch 210 is connected to the first end of at least one second single-pole double-throw switch 220; the second end of at least one second single-pole double-throw switch 220 is the first end of the switch module 200.

[0081] In this embodiment, when only the first single-pole double-throw switch 210 exists in the switch module 200, it is indicated that the number of target WIFI chips 230 that the switch module 200 needs to connect to is two. If the second single-pole double-throw switch 220 exists in the switch module 200, the number of target WIFI chips 230 that the switch module 200 can connect to is greater than the number of the second single-pole double-throw switch 220, and the interpolation value is a positive integer 2.

[0082] For example, Figure 2 As shown, the switch module 200 includes two second single-pole double-throw switches 220 and one single-pole double-throw switch 210 , and the second single-pole double-throw switches 220 are connected in series; there are four target WIFI chips 230 and a corresponding target FEM 240 .

[0083] It should be noted that the present application introduces the connection between the second single-pole double-throw switches 220 achieved by series connection. The connection method of the second single-pole double-throw switches 220 is not limited to series connection, and can be connected in parallel or in a combination of parallel and series. The present application does not limit the connection method of the switch.

[0084] On the other hand, this embodiment describes a method for implementing the switch module 200 by a single-pole double-throw switch, and the first end and the second end of the switch module 200 are implemented by different connections and combinations between the switches. The single-pole double-throw switch is only one implementation method, and the switch module 200 mentioned in this application can also be implemented based on other methods, and is not limited to being implemented by a single-pole double-throw switch.

[0085] In this embodiment, the structure of the switch module and how to implement the switch module through a single-pole double-throw switch are introduced. The path selection characteristics of the single-pole double-throw switch are used to achieve switching among multiple WIFI chips, thereby achieving switching of multiple frequency band paths on a specific frequency band, thereby maintaining the stability of frequency band communication.

[0086] Figure 3 A schematic diagram of the structure of the radio frequency circuit provided in the embodiment of the present application Figure 2 .like Figure 3 As shown, the radio frequency circuit includes FEM310 and WIFI320 chips. FEM310 includes a power amplifier 311, a low noise amplifier 312, a power regulator 313, a first transmitting unit 314, and a first receiving unit 315;

[0087] The WIFI chip 320 includes a power control pin 321, a noise control pin 322, a power control pin 323, a second transmitting unit 324, and a second receiving unit 325;

[0088] Wherein, the first end of the power amplifier 311 is connected to the power control pin 321, the first end of the low noise amplifier 312 is connected to the noise control pin 322, the first end of the power regulator 313 is connected to the power control pin 323, the first end of the first transmitting unit 314 is connected to the second transmitting unit 324, and the first end of the first receiving unit 315 is connected to the second receiving unit 325;

[0089] The first end of the power amplifier 311 , the first end of the low noise amplifier 312 , the first end of the power regulator 313 , the first end of the first transmitting unit 314 , and the first end of the first receiving unit 315 are all first ends of the FEM 310 .

[0090] In this embodiment, the power amplifier 311 of the FEM 310 is used to amplify the low-power RF signal to a sufficient power level, so as to effectively and reversely communicate wirelessly. The low-noise amplifier 312 is used to receive and process weak RF signals, mainly used to amplify weak signals and improve the signal-to-noise ratio of RF signals. The power regulator 313 is used to control whether the transmitter of the FEM to transmit RF signals to the outside is enabled. The first transmitting unit 314 is used to transmit RF signals of data. The first receiving unit 315 is used to receive external RF signals.

[0091] The power control pin 321 of the WIFI chip 320 is used to send a high level or a low level to the power amplifier 311 of the FEM 310, so as to enable or disable the power amplifier 311 in the FEM 310. The noise control pin 322 is used to send a low level or a high level to the low noise amplifier 312 of the FEM 310, so as to enable or disable the low noise amplifier 312. The power control pin 323 is used to send a high level or a low level to the power controller 313 of the FEM 310 to control whether the transmitter in the FEM 310 is enabled. The second transmitting unit 324 is used to send a radio frequency signal to the FEM 310; and the second receiving unit 325 is used to receive a radio frequency signal from the FEM 310.

[0092] In this embodiment, the connection between FEM310 and WIFI chip 320 can be a direct connection or a connection through a switch module. In this embodiment, only the direct connection method is described, but the connection relationship between the various components used for connection will not change due to the addition of the switch module.

[0093] Based on the above embodiments, the present application proposes a radio frequency circuit supporting three bands. Figure 4 The structure diagram of a radio frequency circuit supporting three frequencies provided in an embodiment of the present application is shown in FIG. Figure 4The circuit shown includes two WIFI chips: a 2.4G / 5G WIFI chip 411 and a 5G / 6G WIFI chip 412; three FEMs: a 2.4G FEM 421, a 5G FEM 422 and a 6G FEM 423; three antennas: a 2.4G antenna 431, a 5G antenna 432 and a 6G antenna 433; and five single-pole double-throw switches: a transmitting switch TX_SPDT 441, a receiving switch RX_SPDT 442, a power switch PA-EN_SPDT 443, a noise switch LAN-EN_SPDT 444 and a power switch PEDT_SPDT 445.

[0094] Among them, the first end of 2.4G FEM421 is connected to 2.4G / 5G WIFI chip 411; the second end of 2.4G FEM421 is connected to 2.4G antenna 431. The first end of 5G FEM422 is connected to 2.4G / 5G WIFI chip 411 and 5G / 6G WIFI 412 chip respectively through 5 single-pole double-throw switches; the second end of 5G FEM422 is connected to 5G antenna 432. The first end of 6G FEM423 is connected to 5G / 6G WIFI chip 412, and the second end of 6G FEM423 is connected to 6G antenna 433.

[0095] This embodiment Figure 4 Based on the description of the transmission path of the RF signal, Figure 5 The following is a schematic diagram of a signal transmission of a radio frequency circuit. Figure 5 As shown, when the 2.4G / 5GWIFI chip 411 is the chip currently used by the 5GFEM422, the signal transmission direction of the current RF circuit sending the RF signal outward is: the 2.4G / 5GWIFI chip 411 sends the RF signal to the 5GFEM422 through TX_SPDT441, and after being processed by the 5GFEM422, the processed RF signal is sent to the 5G antenna 432.

[0096] Figure 6 The figure is a schematic diagram of signal transmission of a radio frequency circuit receiving a signal. Figure 5 As shown, when the 2.4G / 5GWIFI chip 411 is the chip currently used by the 5GFEM422, the signal transmission direction of the current RF circuit receiving the RF signal is: the 5G antenna 432 sends the received signal to the 5GFEM422, and after being processed by the 5GFEM422, the signal is transmitted to the 2.4G / 5GWIFI chip 411 through RX_SPDT442.

[0097] In this embodiment, a single-pole double-throw switch and a chip supporting dual-band are used to implement a triple-band RF circuit, and a single-pole double-throw switch is used to complete the switching of the WIFI chip for the 5G band, thereby realizing a multi-channel 5G signal band and supporting RF circuits of multiple bands; thereby, the data throughput of the RF circuit can be improved while maintaining the stability of the 5G band, thereby ensuring efficient and stable transmission of the RF signal.

[0098] The present application also provides an electronic device, comprising a radio frequency circuit described in any one of the above embodiments and possible implementation methods. The effect of the electronic device is consistent with the effect of the radio frequency circuit described in the above embodiments, and will not be repeated here.

[0099] Finally, it should be noted that those skilled in the art will readily conceive of other embodiments of the present invention after considering the specification and practicing the invention disclosed herein. The present invention is intended to cover any variations, uses or adaptations of the present invention, which follow the general principles of the present invention and include common knowledge or customary technical means in the art not disclosed by the present invention, are not limited to the precise structure described above and shown in the drawings, and may be modified and changed in various ways without departing from the scope thereof. The scope of the present invention is limited only by the appended claims.

Claims

1. A radio frequency circuit, characterized in that: include: Multiple wireless network communication technology WIFI chips, at least one front-end module FEM, and at least one antenna; Wherein, at least one WIFI chip supports multiple frequency bands; For each FEM, a first end of the FEM is connected to a WIFI chip corresponding to a frequency band supported by the FEM, and a second end of the FEM is connected to an antenna corresponding to a frequency band supported by the FEM.

2. The circuit according to claim 1, characterized in that The circuit also includes a switch module and a control module; The first end of the switch module is connected to the target WIFI chip, and the second end of the switch module is connected to the first end of the target FEM; The first end of the control module is connected to the second end of the target FEM, and the second end of the control module is connected to the third end of the switch module; The control module is used to control the switch module to change the working state of the target WIFI chip for the target frequency band; The target FEM is a FEM among the at least one FEM that is connected to multiple WIFI chips, the target WIFI chip is a WIFI chip corresponding to the target frequency band supported by the target FEM among the multiple WIFI chips, and the target frequency band is a frequency band supported by the target FEM.

3. The circuit according to claim 2, characterized in that The switch module includes a first single-pole double-throw switch; The first end of the first single-pole double-throw switch is the second end of the switch module, and the second end and the third end of the first single-pole double-throw switch are both the first end of the switch module.

4. The circuit according to claim 3, characterized in that The switch module further comprises at least one second single-pole double-throw switch, wherein the at least one second single-pole double-throw switch is connected in series; The first end of the first single-pole double-throw switch is the second end of the switch module, the second end of the first single-pole double-throw switch is the first end of the switch module, and the third end of the first single-pole double-throw switch is connected to the first end of the at least one second single-pole double-throw switch; The second end of the at least one second single-pole double-throw switch is the first end of the switch module.

5. The circuit according to any one of claims 2 to 4, characterized in that: The control module is used to monitor the frequency band path formed when the target FEM and the current target WIFI chip connected to the target FEM are connected, and obtain the performance index value of the frequency band path; The performance index is a performance index value of a target frequency band when a target FEM and a target WIFI chip are connected.

6. The circuit according to any one of claims 2 to 5, characterized in that: The control module is used to adjust the switch module to adjust the working state of the current target WIFI chip connected to the target FEM to non-working for the target frequency band, and adjust the working state of any other target WIFI chip for the target frequency band to working when the performance index value of the target frequency band corresponding to the target FEM does not reach the preset performance index value; The target WIFI chip adjusts the frequency band path for switching the target frequency band according to the working state of the target frequency band.

7. The circuit according to any one of claims 2 to 4, characterized in that: The control module is used to adjust the switch module according to the switching instruction input by the user, so that the working state of the current target WIFI chip connected to the target FEM chip is adjusted to non-working for the target frequency band, and the working state of any other target WIFI chip for the target frequency band is adjusted to working.

8. The circuit according to any one of claims 1 to 4, characterized in that: The FEM includes a power amplifier, a low noise amplifier, a power regulator, a first transmitting unit, and a first receiving unit; The WIFI chip includes a power control pin, a noise control pin, a power control pin, a second transmitting unit, and a second receiving unit; Wherein, the first end of the power amplifier is connected to the power control pin, the first end of the low noise amplifier is connected to the noise control pin, the first end of the power regulator is connected to the power control pin, the first end of the first transmitting unit is connected to the second transmitting unit, and the first end of the first receiving unit is connected to the second receiving unit; The first end of the power amplifier, the first end of the low noise amplifier, the first end of the power regulator, the first end of the first transmitting unit and the first end of the first receiving unit are all first ends of the FEM.

9. The circuit according to claim 5, characterized in that The performance indicator includes at least one of the following: received signal strength indication RSSI, signal-to-noise ratio SNR, data transmission rate, packet loss rate, and connection interruption frequency.

10. A customer premise equipment, characterized in that: Comprising the radio frequency circuit as described in any one of claims 1-9.

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