WO2024083037A1

WO2024083037A1 - Radio frequency circuit and electronic device

Info

Publication number: WO2024083037A1
Application number: PCT/CN2023/124469
Authority: WO
Inventors: 曲鑫; 沈晓冬; 崔献
Original assignee: 维沃移动通信有限公司
Priority date: 2022-10-20
Filing date: 2023-10-13
Publication date: 2024-04-25
Also published as: CN117955515A

Abstract

The present application relates to the technical field of communications. Disclosed are a radio frequency circuit and an electronic device. The radio frequency circuit of the embodiments of the present application comprises: a first module, the first module being used for receiving a downlink physical signal and/or a physical channel; a second module, the second module being used for receiving a low-power-consumption wake-up signal; an antenna; and a control module, the first module and the second module being connected to the antenna by means of the control module, and the control module being used for controlling at least one of the first module and the second module to work.

Description

RF circuits and electronic equipment

CROSS-REFERENCE TO RELATED APPLICATIONS

This application claims priority to Chinese Patent Application No. 202211289833.5 filed on October 20, 2022, the entire contents of which are incorporated herein by reference.

Technical Field

The present application belongs to the field of communication technology, and specifically relates to a radio frequency circuit and electronic equipment.

Background technique

New Radio (NR) introduces low-power signals to reduce terminal power consumption. For example, an electronic device may include a first module and a second module, and the low-power signal includes a low-power wake-up signal. When the electronic device is idle, the first module may be turned off or set to a deep-sleep state, a light-sleep state, or a micro-sleep state, and the second module may be used to monitor the low-power wake-up signal for waking up the first module, thereby achieving the purpose of reducing the power consumption of the electronic device. The first module and the second module each have their own independent antenna resources, which will cause the antenna resources to occupy a large space in the terminal and increase the cost.

Summary of the invention

The embodiments of the present application provide a radio frequency circuit and an electronic device, which can solve the problem of enabling a first module and a second module to work simultaneously without increasing antenna resources.

In a first aspect, a radio frequency circuit is provided, comprising:

A first module, the first module is used to receive a downlink physical signal and/or a physical channel;

A second module, the second module is used to receive a low-power wake-up signal;

antenna;

A control module, wherein the first module and the second module are both connected to the antenna through the control module, and the control module is used to control the operation of at least one of the first module and the second module.

According to a second aspect, an electronic device is provided, wherein the electronic device comprises the radio frequency circuit according to the first aspect.

In an embodiment of the present application, the radio frequency circuit includes: a first module, the first module is used to receive a downlink physical signal and/or a physical channel; a second module, the second module is used to receive a low-power wake-up signal; an antenna; a control module, the first module and the second module are both connected to the antenna through the control module, and the control module is used to control at least one of the first module and the second module to work. In this way, by using the same antenna resources for the first module and the second module, the space occupied by the antenna resources in the terminal can be reduced, which is conducive to the miniaturization of electronic devices.

BRIEF DESCRIPTION OF THE DRAWINGS

FIG1 is a block diagram of a wireless communication system to which an embodiment of the present application can be applied;

FIG2 is one of the structural schematic diagrams of a radio frequency circuit provided in an embodiment of the present application;

FIG3 is one of partial structural schematic diagrams of a radio frequency circuit provided in an embodiment of the present application;

FIG4 is a second schematic diagram of a partial structure of a radio frequency circuit provided in an embodiment of the present application;

FIG5 is a third schematic diagram of a partial structure of a radio frequency circuit provided in an embodiment of the present application;

FIG6 is a schematic diagram of the structure of a receiving end provided in an embodiment of the present application;

FIG7 is a second schematic diagram of the structure of a radio frequency circuit provided in an embodiment of the present application;

FIG8 is a third schematic diagram of the structure of a radio frequency circuit provided in an embodiment of the present application;

FIG9 is a fourth structural diagram of a radio frequency circuit provided in an embodiment of the present application;

FIG. 10 is a schematic diagram of the structure of a terminal provided in an embodiment of the present application.

Detailed ways

The following will be combined with the drawings in the embodiments of the present application to clearly describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field belong to the scope of protection of this application.

The terms "first", "second", etc. in the specification and claims of the present application are used to distinguish similar objects, and are not used to describe a specific order or sequence. It should be understood that the terms used in this way are interchangeable under appropriate circumstances, so that the embodiments of the present application can be implemented in an order other than those illustrated or described here, and the objects distinguished by "first" and "second" are generally of the same type, and the number of objects is not limited. For example, the first object can be one or more. In addition, "and/or" in the specification and claims represents at least one of the connected objects, and the character "/" generally represents that the objects associated with each other are in an "or" relationship.

It is worth noting that the technology described in the embodiments of the present application is not limited to the Long Term Evolution (LTE)/LTE-Advanced (LTE-A) system, but can also be used in other wireless communication systems, such as Code Division Multiple Access (CDMA), Time Division Multiple Access (TDMA), Frequency Division Multiple Access (FDMA), Orthogonal Frequency Division Multiple Access (OFDMA), Single-carrier Frequency Division Multiple Access (SC-FDMA) and other systems. The terms "system" and "network" in the embodiments of the present application are often used interchangeably, and the described technology can be used for the above-mentioned systems and radio technologies as well as for other systems and radio technologies. The following description describes a new radio (NR) system for example purposes, and NR terms are used in most of the following descriptions, but these technologies can also be applied to applications other than NR system applications, such as the ^6th Generation (6G) communication system.

FIG1 shows a block diagram of a wireless communication system applicable to the embodiments of the present application. The wireless communication system includes a terminal 101 and a network side device 102. The terminal 101 may be a mobile phone, a tablet computer (Tablet Personal Computer), a laptop computer (Laptop Computer) or a notebook computer, a personal digital assistant (Personal Digital Assistant, PDA), a handheld computer, a netbook, an ultra-mobile personal computer (ultra-mobile personal computer, UMPC), a mobile Internet device (Mobile Internet Device, MID), an augmented reality (augmented reality, AR)/virtual reality, or a network device 102. Virtual reality (VR) devices, robots, wearable devices (Wearable Device), vehicle user equipment (VUE), pedestrian terminal (Pedestrian User Equipment, PUE), smart home (home appliances with wireless communication functions, such as refrigerators, televisions, washing machines or furniture, etc.), game consoles, personal computers (personal computers, PCs), teller machines or self-service machines and other terminal side devices, wearable devices include: smart watches, smart bracelets, smart headphones, smart glasses, smart jewelry (smart bracelets, smart bracelets, smart rings, smart necklaces, smart anklets, smart anklets, etc.), smart wristbands, smart clothing, etc. It should be noted that the specific type of terminal 101 is not limited in the embodiment of the present application. The network side device 102 may include access network equipment or core network equipment, wherein the access network equipment may also be called wireless access network equipment, wireless access network (Radio Access Network, RAN), wireless access network function or wireless access network unit. The access network device may include a base station, a wireless local area network (WLAN) access point or a WiFi node, etc. The base station may be called a node B, an evolved node B (eNB), an access point, a base transceiver station (BTS), a radio base station, a radio transceiver, a basic service set (BSS), an extended service set (ESS), a home node B, a home evolved node B, a transmitting and receiving point (TRP) or some other suitable term in the field. As long as the same technical effect is achieved, the base station is not limited to a specific technical vocabulary. It should be noted that in the embodiment of the present application, only the base station in the NR system is used as an example for introduction, and the specific type of the base station is not limited.

The radio frequency circuit and electronic device provided in the embodiments of the present application are described in detail below through some embodiments and their application scenarios in combination with the accompanying drawings.

As shown in FIG2 , an embodiment of the present application provides a radio frequency circuit, including:

A first module 11, wherein the first module 11 is used to receive a downlink physical signal and/or a physical channel;

A second module 12, the second module 12 is used to receive a low power consumption wake-up signal;

Antenna 13;

The control module 14 , the first module 11 and the second module 12 are both connected to the antenna 13 through the control module 14 , and the control module 14 is used to control at least one of the first module 11 and the second module 12 to work.

The second module 12 may also be referred to as a low-power wake-up module, a wake-up receiving module, a low-power wake-up receiving module, or a wake-up module, etc. The second module 12 may be configured to trigger the wake-up of the first module 11 to receive a downlink physical signal and/or a physical channel when a low-power wake-up signal is received.

In one embodiment, the second module 12 can be used to trigger the awakening of the first module 11 to receive the target downlink physical signal and/or target physical channel when a low-power wake-up signal is received. The target downlink physical signal can be a specific downlink physical signal, and the target physical channel can be a specific physical channel.

In addition, the control module 14 can control the first module 11 to work, or control the second module 12 to work, or control the first module 11 and the second module 12 to work simultaneously. The first module 11 working can refer to the first module 11 and the antenna 13 being in a connected state, and the first module 11 receiving a specific downlink physical signal or physical channel. The second module 12 working can refer to the second module 12 and the antenna 13 being in a connected state, and the second module 12 working can refer to the second module 12 and the antenna 13 being in a connected state. The module 12 receives the low power consumption wake-up signal. The operation can also be described as turning on or starting up.

Specifically, when the first module 11 is working, the first module 11 can receive a measurement signal to implement a measurement function, or the first module 11 can receive a downlink physical signal including the measurement signal and/or a downlink control physical channel and/or a downlink data physical channel when awakened by the second module 12. When the second module 12 is working, the second module 12 can receive a low power consumption wake-up signal.

In one embodiment, the control module 14 can control the first module 11 and the second module 12 to work simultaneously, and the second module 12 can receive a low-power wake-up signal; the first module 11 can receive a measurement signal to implement a measurement function, or the first module 11 can receive a downlink physical signal including a measurement signal and/or a downlink control physical channel and/or a downlink data physical channel when awakened by the second module 12.

In addition, the number of antennas 13 can be one or more, and one antenna 13 can correspond to one control module 14. Each control module 14 is connected to the first module 11 and the second module 12, that is, the first module 11 and the second module 12 can send and receive signals through multiple antennas.

In one embodiment, the control module 14 may include an antenna switching unit (Antenna switch module, ASM) and a matching network (Matching network), as shown in Figure 3. In this way, by switching through the antenna switching unit, the antenna 13 can be connected to the first module 11 via the matching network, or the antenna 13 can be connected to the second module 12 via the matching network.

It should be noted that the first module 11 can be a main communication module. For example, as shown in FIG3 , the RF front end of the main communication module can include a duplexer, an RF filter, a switch, a low noise amplifier (LNA) and a power amplifier (PA). Through the antenna switching unit, the main communication module can select different working frequency bands; through the matching network, the antenna impedance matching on different frequency bands can be flexibly realized to achieve the best performance of RF signal transmission and reception; when the antenna switching unit switches to the frequency division duplex (FDD) band, the duplexer can realize the simultaneous transmission and reception of signals in the frequency band, and the duplexer also has a RF filtering function; when the antenna switching unit switches to the time division duplex (TDD) band, after passing through the RF filter, a switch is used to select one of transmission or reception on the frequency band; the uplink transmission is amplified by the PA, and the downlink reception is amplified by the LNA. In addition to the RF front-end part, the RF circuit also includes a transceiver part, which converts the RF signal to a baseband signal or converts the baseband signal to a RF signal through down-conversion or up-conversion, and processes it through a baseband processing unit (Baseband processing).

In addition, the second module 12 can be a low-power wake-up module. In one embodiment, as shown in Figure 4, the low-power wake-up module may include a radio frequency filter (such as a radio frequency band pass filter (Radio Frequency Band Pass Filter, RF BPF)), a radio frequency envelope detector (RF Envelop detector), a baseband amplifier (Baseband Amplifier, BB AMP), a baseband filter (such as a baseband low pass filter (Baseband Low pass filter, BB LPF)), a comparator (Comparator) or an analog to digital converter (Analogue to Digital Converter, ADC), and a digital processing unit (such as a main controller), etc. The RF signal is received by the antenna, matched by the network, band-pass filtered, and then amplified by the LNA to obtain an amplified RF signal. After the RF envelope detector, the RF signal is converted to a baseband signal, and then amplified. After low-pass filtering, the amplified baseband signal is obtained, and then the analog signal is converted into a digital signal through a comparator or ADC, and digital processing is performed in the digital processing unit. Because the RF signal is converted into a baseband signal by envelope detection, only the signal amplitude information is used, so it is more suitable for amplitude shift keying (ASK) modulation.

In another embodiment, as shown in FIG5 , the low-power wake-up module may include a radio frequency filter, a ring oscillator, a mixer, an intermediate frequency (IF) amplifier (IF AMP), an intermediate frequency filter (IF BPF), an intermediate frequency envelope detector (IF Envelop detector), a baseband amplifier, a baseband filter, a comparator or ADC, and a digital processing unit (such as a main controller). The radio frequency signal is received by an antenna, a matching network, and a radio frequency bandpass filter. After mixing with a local signal generated by a ring oscillator, the radio frequency signal is converted into an intermediate frequency signal; after intermediate frequency amplification and intermediate frequency filtering, an amplified intermediate frequency signal is obtained; after intermediate frequency envelope detection, the intermediate frequency signal is converted into a baseband signal, and after amplification and low-pass filtering, an amplified baseband signal is obtained; and then the analog signal is converted into a digital signal through a comparator or ADC, and digital processing is performed in a digital processing unit. Because envelope detection is used to convert the radio frequency signal into a baseband signal, only the signal amplitude information is used, so it is more suitable for ASK modulation.

It should be noted that the terminal may include two modules, the first module 11 is a main communication module, which is used to receive a downlink physical signal or a physical channel, and the second module 12 is a low-power wake-up module (i.e., a low-power wake-up receiving module), which is used to receive a wake-up signal (i.e., a low-power wake-up signal). As shown in FIG6 , when the main communication module is idle, it can be turned off or set to a deep-sleep state, or a light-sleep state, or a micro-sleep state. The low-power wake-up signal is monitored by the low-power wake-up module. When the wake-up signal sent by the transmitter is successfully detected, and the wake-up signal contains information for waking up the terminal, the main communication module is triggered to enter the working state, and the downlink physical signal or physical channel can be received. When the main communication module is not awakened, it is in a closed or deep sleep state, or a light sleep state, or a micro-sleep state, and only part of the downlink physical signal or physical channel, such as a measurement signal, is received, or not received. In the related art, the terminal introduces a low-power wake-up module, and when there is no conflict in the hardware resource units of the main communication module and the low-power wake-up module, the need for receiving signals at the same time can be met. However, when there is a hardware resource conflict between the low-power wake-up module and the main communication module, there is usually no way to achieve simultaneous signal reception.

The existing communication module of the terminal consumes a lot of power. By introducing a low-power wake-up module, the main communication module can be turned off or set to a deep-sleep state, a light-sleep state, or a micro-sleep state when it is idle, and the low-power wake-up module monitors the low-power wake-up signal, thereby greatly reducing the overall power consumption of the terminal. In this embodiment, when the terminal introduces the low-power wake-up module, the hardware units contained in the existing communication module are reused as much as possible, thereby reducing the cost and size of the terminal, while avoiding or reducing the impact on the performance of the existing communication module as much as possible. In addition, considering that for the terminal that introduces the low-power wake-up module, there is a need for the main communication module (i.e., the existing communication module) and the low-power wake-up module to receive signals at the same time, such as the need for the main communication module to receive measurement signals and the low-power wake-up module to monitor low-power wake-up signals at the same time, the hardware design of the RF circuit in this embodiment supports this function.

In the embodiment of the present application, the radio frequency circuit includes: a first module 11, the first module 11 is used to receive a downlink physical signal and/or a physical channel; a second module 12, the second module 12 is used to receive a low-power wake-up signal; an antenna 13; a control module 14, the first module 11 and the second module 12 are connected to the antenna 13 through the control module 14. The control module 14 is used to control the operation of at least one of the first module 11 and the second module 12. In this way, by using the same antenna resources for the first module 11 and the second module 12, the space occupied by the antenna resources in the terminal can be reduced, which is conducive to the miniaturization of the electronic device.

Optionally, the second module 12 is used to trigger the awakening of the first module 11 to receive a downlink physical signal and/or a physical channel when a low power consumption awakening signal is received.

In one implementation, the second module 12 is used to trigger the awakening of the working first module 11 to receive downlink physical signals and/or physical channels when receiving a low-power awakening signal.

In one embodiment, the second module 12 is used to trigger the awakening of the working first module 11 to receive the target downlink physical signal and/or target physical channel when receiving a low-power wake-up signal. The target downlink physical signal can be a specific downlink physical signal, and the target physical channel can be a specific physical channel.

Optionally, as shown in FIG. 7 , the control module 14 includes an antenna switching unit 141 , and both the first module 11 and the second module 12 are connected to the antenna 13 via the antenna switching unit 141 .

At least one of the first module 11 and the second module 12 is working. The first module 11 and the second module 12 can be connected to the antenna switching unit 141 respectively, and the antenna switching unit 141 turns on at least one of the first module 11 and the second module 12.

In this embodiment, the control module 14 includes an antenna switching unit 141, and the first module 11 and the second module 12 are both connected to the antenna 13 through the antenna switching unit 141, so that the connectivity between the antenna 13 and the first module 11 and the second module 12 can be controlled by the antenna switching unit 141, so that at least one of the first module 11 or the second module 12 works.

Optionally, as shown in FIG. 7 , the control module 14 further includes a first impedance matching unit 142 , and the second module 12 is connected to the antenna switching unit 141 through the first impedance matching unit 142 .

The first impedance matching unit 142 may include an impedance matching network.

In one implementation, the antenna switching unit 141 is connected to the first impedance matching unit 142 , and the first impedance matching unit 142 is connected to the second module 12 .

In this embodiment, the control module 14 also includes a first impedance matching unit 142, and the second module 12 is connected to the antenna switching unit 141 through the first impedance matching unit 142. In this way, impedance matching is performed through the first impedance matching unit 142, so that the part of the signal received by the second module 12 that leaks to the second module 12 meets the preset conditions, thereby improving the performance of the RF circuit.

Optionally, as shown in FIG. 7 , the control module 14 further includes a second impedance matching unit 143 , and the first module 11 is connected to the antenna switching unit 141 via the second impedance matching unit 143 .

The second impedance matching unit 143 may include an impedance matching network.

In one implementation, the antenna switching unit 141 is connected to the second impedance matching unit 143 , and the second impedance matching unit 143 is connected to the first module 11 .

In one embodiment, the second module 12 includes a first RF filter 121, a RF envelope detection unit 123 and a first baseband processing unit 122, and one end of the first RF filter 121 is connected to the first impedance matching unit 142. The other end of the first RF filter 121 is connected to the first RF envelope detection unit 123 , and the RF envelope detection unit 123 is connected to the first baseband processing unit 122 .

The other end of the first RF filter 121 may be connected to the first RF envelope detection unit 123 via a first LNA.

In one implementation, the first module 11 includes a second RF filter 111, a duplexer 112, a transceiver unit 113, and a second baseband processing unit 114, one end of the second RF filter 111 is connected to the second impedance matching unit 143, the other end of the second RF filter 111 is connected to the transceiver unit 113, one end of the duplexer 112 is connected to the second impedance matching unit 143, the other end of the duplexer 112 is connected to the transceiver unit 113, and the transceiver unit 113 is connected to the second baseband processing unit 114;

The second RF filter 111 works in a time division duplex TDD frequency band, and the duplexer 112 works in a frequency division duplex FDD frequency band.

The other end of the second RF filter 111 can be connected to the transceiver unit 113 through a switch, a second LNA and a first PA. For example, the other end of the second RF filter 111 is connected to the first end of the switch, the second end of the switch is connected to the second LNA, and the third end of the switch is connected to the first PA. When the first end of the switch is connected to the second end of the switch, the first module 11 receives a signal through the second RF filter 111; when the first end of the switch is connected to the third end of the switch, the first module 11 sends a signal through the second RF filter 111.

In addition, the duplexer 112 can be connected to the transceiver unit 113 through the third LNA and the second PA. For example, the first end of the duplexer 112 is connected to the second impedance matching unit 143, the second end of the duplexer 112 is connected to the third LNA, and the third end of the duplexer 112 is connected to the second PA. The third LNA and the second PA are both connected to the transceiver unit 113, the first module 11 receives signals through the duplexer 112, the third LNA and the communication branch of the transceiver unit 113, and the first module 11 sends signals through the duplexer 112, the second PA and the communication branch of the transceiver unit 113.

It should be noted that, in this embodiment, the RF circuit can select different working frequency bands through the antenna switching unit 141; the impedance matching unit in the RF circuit can flexibly realize the impedance matching of the antenna 13 on different frequency bands to achieve the best performance of RF signal transmission and reception; when the antenna switching unit 141 switches to the FDD frequency band, the duplexer 112 can realize the simultaneous transmission and reception of signals in the frequency band, and the duplexer 112 also has a RF filtering function; when the antenna switching unit 141 switches to the TDD frequency band, after passing through the second RF filter 111, the switch selects one of transmission or reception on the frequency band; the uplink transmission amplifies the transmission signal through the first PA, and the downlink reception amplifies the reception signal through the second LNA. In addition to the RF front-end part, the RF circuit also includes a transceiver unit 113, which converts the RF signal to a baseband signal or converts the baseband signal to a RF signal through down-conversion or up-conversion, and processes it through the second baseband processing unit 114.

In this embodiment, the control module 14 also includes a second impedance matching unit 143, and the first module 11 is connected to the antenna switching unit 141 through the second impedance matching unit 143. In this way, impedance matching is performed through the second impedance matching unit 143, so that the part of the signal received and sent by the first module 11 that leaks to the second module 12 meets the preset conditions, thereby improving the performance of the RF circuit.

Optionally, when the control module 14 controls the first module 11 and the second module 12 to work simultaneously In this case, the link where the second module 12, the antenna switching unit 141, the first impedance matching unit 142 and the antenna 13 are located is connected, and the first impedance matching unit 142 performs impedance matching; the link where the first module 11, the antenna switching unit 141, the second impedance matching unit 143 and the antenna 13 are located is connected, and the second impedance matching unit 143 performs impedance matching.

Optionally, when the control module 14 controls the first module 11 and the second module 12 to work simultaneously, the first impedance matching unit 142 and the second impedance matching unit 143 are used to perform impedance matching so that the signal leakage between the first module 11 and the second module 12 meets a preset condition.

The signal leakage between the first module 11 and the second module 12 satisfies a preset condition, which may be that the signal leakage parameter between the first module 11 and the second module 12 is less than a preset leakage parameter. The preset leakage parameter may be obtained in advance, such as defined by a protocol or defined by a field test.

In one embodiment, the second impedance matching unit 143 and the first impedance matching unit 142 adjust the matching impedance according to the first module 11 and the second module 12 turned on by the antenna switching unit 141, and the adjusted matching impedance meets the signal leakage requirements of the first module 11 and the second module 12.

In this implementation, when the control module 14 controls the first module 11 and the second module 12 to work simultaneously, the first impedance matching unit 142 and the second impedance matching unit 143 are used to perform impedance matching so that the signal leakage between the first module 11 and the second module 12 meets a preset condition. In this way, the performance of the radio frequency circuit can be improved by performing impedance matching through the first impedance matching unit 142 and the second impedance matching unit 143.

Optionally, as shown in FIG. 7 , the control module 14 further includes a third impedance matching unit 144 , and the antenna 13 is connected to the antenna switching unit 141 via the third impedance matching unit 144 .

The third impedance matching unit 144 may include an impedance matching network.

In one implementation, the antenna switching unit 141 is connected to a third impedance matching unit 144 , and the third impedance matching unit 144 adjusts the matching impedance according to the first module 11 and/or the second module 12 turned on by the antenna switching unit 141 .

In one embodiment, the antenna switching unit 141 turns on the first module 11 and the second module 12, and the third impedance matching unit 144 adjusts the matching impedance according to at least one frequency band in which the turned-on first module 11 and the second module 12 work, and the adjusted matching impedance meets the antenna 13 requirements of the first module 11 and the second module 12 in the at least one working frequency band.

In this implementation, the control module 14 further includes a third impedance matching unit 144, and the antenna 13 is connected to the antenna switching unit 141 via the third impedance matching unit 144, so that the impedance matching requirement of the antenna 13 can be met in different working frequency bands through the third impedance matching unit 144.

Optionally, the third impedance matching unit 144 is used to perform impedance matching so that the impedance meets a preset antenna impedance matching condition in the working frequency band of the first module 11 and/or the working frequency band of the second module 12 .

Wherein, satisfying the preset antenna impedance matching condition may be impedance matching with the antenna 13. The operating frequency band of the first module 11 may be the same as the operating frequency band of the second module 12, or the operating frequency band of the first module 11 may be different from the operating frequency band of the second module 12.

In one implementation, the control module 14 may only control the first module 11 to work, and the third impedance matching unit 144 is used to perform impedance matching so that the impedance matches the antenna 13 in the working frequency band of the first module 11 .

In one implementation, the control module 14 may only control the second module 12 to work, and the third impedance matching unit 144 is used to perform impedance matching so that the impedance matches the antenna 13 in the working frequency band of the second module 12 .

In one embodiment, the control module 14 can control the first module 11 and the second module 12 to work simultaneously, wherein, when the working frequency band of the first module 11 is the same as the working frequency band of the second module 12, the third impedance matching unit 144 is used to perform impedance matching so that the impedance matches the antenna 13 in the working frequency band; when the working frequency band of the first module 11 is different from the working frequency band of the second module 12, the third impedance matching unit 144 is used to perform impedance matching so that the impedance matches the antenna 13 in both the working frequency band of the first module 11 and the working frequency band of the second module 12.

Optionally, the first module 11 includes at least one of the following:

New Radio (NR) communication module; Long Term Evolution (LTE) communication module, Narrow Band Internet of Things (NB-IOT) communication module, Machine-to-Machine (MTC) communication module, NR side link communication module, LTE side link communication module, WIFI communication module.

Optionally, the second module 12 is a low-power wake-up module.

In this embodiment, by designing the antenna switching unit 141 and the first impedance matching unit 142 and the second impedance matching unit 143, the low-power wake-up module can reuse the antenna 13, the third impedance matching unit 144, and the antenna switching unit 141 of the main communication module, so as to realize the low-power wake-up module and the main communication module to work simultaneously. In this embodiment, while realizing the low-power wake-up module and the main communication module to reuse the hardware unit, it can support the low-power wake-up module and the main communication module to work simultaneously.

Embodiment 1:

In this embodiment, the radio frequency circuit includes a main communication module (i.e., the first module 11) and a low-power wake-up module (i.e., the second module 12). The main communication module may be an NR communication module; at least one of an LTE communication module, a NB-IOT communication module, an MTC communication module, an NR side link communication module, an LTE side link communication module, and a WIFI communication module. The low-power wake-up module is only used to receive low-power signals and has no sending function.

As shown in FIG7 , the RF front end of this embodiment includes an antenna switching unit (Antenna Switch Module, ASM), which can switch between multiple communication modules. For the main communication module, it includes a transceiver module on the TDD band (i.e., the second RF filter works on the TDD band i) and a transceiver module on the FDD band (i.e., the duplexer works on the FDD band j); for the low-power wake-up module, its operating band can be different from that of the main communication module. Further, the antenna switching unit can turn on the main communication module and the low-power wake-up module at the same time. When the main communication module and the low-power wake-up module are turned on at the same time, the second impedance matching unit between the antenna switching unit and the main communication module and the first impedance matching unit between the antenna switching unit and the low-power wake-up module are adjusted respectively, so that the part of the signal received and transmitted by the main communication module leaks to the low-power wake-up module meets the minimum leakage requirement index, and the part of the signal received by the low-power wake-up module leaks to the main communication module meets the minimum leakage requirement index. The minimum leakage requirement index can be obtained in advance, such as protocol definition, field measurement definition, etc.

When the main communication module and the low-power wake-up module are turned on at the same time, the matching impedance of the third impedance matching unit can also be adjusted according to the frequency bands in which the turned-on main communication module and the low-power wake-up module work, and the adjusted matching impedance meets the antenna requirements of the two working frequency bands. In addition, this embodiment only takes one antenna as an example to illustrate the hardware structure. For multiple antennas, the hardware structure connected to each antenna is similar, and this embodiment will not be repeated.

In this embodiment, the antenna switching unit turns on the main communication module on FDD band j and the low-power wake-up module on band k, so the main communication module can receive at the same time as the low-power wake-up module. For example, the main communication module receives the measurement signal to implement the measurement function, and the low-power wake-up module monitors and receives the low-power wake-up signal to wake up the main communication module. When the low-power wake-up module successfully detects the low-power wake-up signal to wake up the terminal, it triggers the main communication module to listen to the downlink control channel, so that the main communication module can only perform measurements when there is no communication demand to reduce power consumption, and when the communication demand arrives, the main communication module can be triggered to wake up by waking up the receiver.

Embodiment 2:

The radio frequency circuit includes a main communication module (i.e., the first module 11) and a low-power wake-up module (i.e., the second module 12). Compared with Embodiment 1, the working frequency band of the low-power wake-up module in this embodiment is the same as that of the main communication module. For example, the antenna switching unit turns on the main communication module and the wake-up receiving module at the same time. As shown in FIG8 , both modules work in TDD band i, that is, the first radio frequency filter and the second radio frequency filter both work in TDD band i; or as shown in FIG9 , both modules work in FDD band j, that is, the first radio frequency filter and the duplexer both work in FDD band j. At this time, the first impedance matching unit, the second impedance matching unit, and the third impedance matching unit can be adjusted according to TDD band i or FDD band j to achieve impedance matching.

An embodiment of the present application further provides an electronic device, which includes the radio frequency circuit described in the embodiment of the present application.

Taking the electronic device as a terminal as an example, the terminal includes the radio frequency circuit described in the embodiment of the present application.

As shown in Figure 10, the terminal 1000 includes but is not limited to: a radio frequency unit 1001, a network module 1002, an audio output unit 1003, an input unit 1004, a sensor 1005, a display unit 1006, a user input unit 1007, an interface unit 1008, a memory 1009 and at least some of the components of the processor 1010.

Those skilled in the art can understand that the terminal 1000 can also include a power supply (such as a battery) for supplying power to each component, and the power supply can be logically connected to the processor 1010 through a power management system, so as to implement functions such as charging, discharging, and power consumption management through the power management system. The terminal structure shown in FIG10 does not constitute a limitation on the terminal, and the terminal can include more or fewer components than shown in the figure, or combine certain components, or arrange components differently, which will not be described in detail here.

It should be understood that in the embodiment of the present application, the input unit 1004 may include a graphics processing unit (GPU) 10041 and a microphone 10042, and the graphics processing unit 10041 processes the image data of a static picture or video obtained by an image capture device (such as a camera) in a video capture mode or an image capture mode. The display unit 1006 may include a display panel 10061, and the display panel 10061 may be configured in the form of a liquid crystal display, an organic light emitting diode, etc. The user input unit 1007 includes a touch panel 10071 and at least one of other input devices 10072. The touch panel 10071 is also called a touch screen. The touch panel 10071 may include two parts: a touch detection device and a touch controller. Other input devices 10072 may include, but are not limited to, a physical keyboard, function keys (such as volume Control buttons, switch buttons, etc.), trackball, mouse, joystick, etc., will not be repeated here.

In the embodiment of the present application, after receiving downlink data from the network side device, the RF unit 1001 can transmit the data to the processor 1010 for processing; in addition, the RF unit 1001 can send uplink data to the network side device. Generally, the RF unit 1001 includes but is not limited to an antenna, an amplifier, a transceiver, a coupler, a low noise amplifier, a duplexer, etc.

The memory 1009 can be used to store software programs or instructions and various data. The memory 1009 may mainly include a first storage area for storing programs or instructions and a second storage area for storing data, wherein the first storage area may store an operating system, an application program or instruction required for at least one function (such as a sound playback function, an image playback function, etc.), etc. In addition, the memory 1009 may include a volatile memory or a non-volatile memory, or the memory 1009 may include both volatile and non-volatile memories. Among them, the non-volatile memory may be a read-only memory (ROM), a programmable read-only memory (PROM), an erasable programmable read-only memory (EPROM), an electrically erasable programmable read-only memory (EEPROM), or a flash memory. The volatile memory may be a random access memory (RAM), a static random access memory (SRAM), a dynamic random access memory (DRAM), a synchronous dynamic random access memory (SDRAM), a double data rate synchronous dynamic random access memory (DDRSDRAM), an enhanced synchronous dynamic random access memory (ESDRAM), a synchronous link dynamic random access memory (SLDRAM) and a direct memory bus random access memory (DRRAM). The memory 1009 in the embodiment of the present application includes but is not limited to these and any other suitable types of memory.

The processor 1010 may include one or more processing units; optionally, the processor 1010 integrates an application processor and a modem processor, wherein the application processor mainly processes operations related to an operating system, a user interface, and application programs, and the modem processor mainly processes wireless communication signals, such as a baseband processor. It is understandable that the modem processor may not be integrated into the processor 1010.

The radio frequency unit includes a radio frequency circuit, and the radio frequency circuit includes:

antenna;

Optionally, the second module is used to trigger awakening of the first module to receive a downlink physical signal or a physical channel when a low-power wake-up signal is received.

Optionally, the control module includes an antenna switching unit, and the first module and the second module are both connected to the antenna through the antenna switching unit.

Optionally, the control module further includes a first impedance matching unit, and the second module is connected to the antenna switching unit through the first impedance matching unit.

Optionally, the control module further includes a second impedance matching unit, and the first module The matching unit is connected to the antenna switching unit.

Optionally, when the control module controls the first module and the second module to work simultaneously, the second module, the antenna switching unit, the first impedance matching unit and the link where the antenna is located are turned on, and the first impedance matching unit performs impedance matching; the first module, the antenna switching unit, the second impedance matching unit and the link where the antenna is located are turned on, and the second impedance matching unit performs impedance matching.

Optionally, the control module further includes a third impedance matching unit, and the antenna is connected to the antenna switching unit via the third impedance matching unit.

Optionally, the third impedance matching unit is used to perform impedance matching so that the impedance meets a preset antenna impedance matching condition in the working frequency band of the first module and/or in the working frequency band of the second module.

Optionally, the first module includes at least one of the following:

New Radio NR communication module; Long Term Evolution LTE communication module, Narrowband Internet of Things NB-IOT communication module, Machine-to-Machine MTC communication module, NR side link communication module, LTE side link communication module, WIFI communication module.

Optionally, the second module is a low-power wake-up module.

It should be noted that, in this article, the terms "include", "comprises" or any other variations thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. Without further restrictions, an element defined by the sentence "includes a ..." does not exclude the existence of other identical elements in the process, method, article or device including the element.

The embodiments of the present application are described above in conjunction with the accompanying drawings, but the present application is not limited to the above-mentioned specific implementation methods. The above-mentioned specific implementation methods are merely illustrative and not restrictive. Under the guidance of the present application, ordinary technicians in this field can also make many forms without departing from the purpose of the present application and the scope of protection of the claims, all of which are within the protection of the present application.

Claims

A radio frequency circuit, comprising:

A first module, the first module is used to receive a downlink physical signal and/or a physical channel;

A second module, the second module is used to receive a low-power wake-up signal;

antenna;

A control module, wherein the first module and the second module are both connected to the antenna through the control module, and the control module is used to control the operation of at least one of the first module and the second module.
The radio frequency circuit according to claim 1, wherein the second module is used to trigger the awakening of the first module to receive a downlink physical signal and/or a physical channel when a low-power wake-up signal is received.
The radio frequency circuit according to claim 1, wherein the control module comprises an antenna switching unit, and the first module and the second module are both connected to the antenna through the antenna switching unit.
The radio frequency circuit according to claim 3, wherein the control module further comprises a first impedance matching unit, and the second module is connected to the antenna switching unit through the first impedance matching unit.
The radio frequency circuit according to claim 4, wherein the control module further comprises a second impedance matching unit, and the first module is connected to the antenna switching unit through the second impedance matching unit.
The radio frequency circuit according to claim 5, wherein, when the control module controls the first module and the second module to work simultaneously, the second module, the antenna switching unit, the first impedance matching unit and the link where the antenna is located are turned on, and the first impedance matching unit performs impedance matching; the first module, the antenna switching unit, the second impedance matching unit and the link where the antenna is located are turned on, and the second impedance matching unit performs impedance matching.
The radio frequency circuit according to claim 3, wherein the control module further comprises a third impedance matching unit, and the antenna is connected to the antenna switching unit through the third impedance matching unit.
The radio frequency circuit according to claim 7, wherein the third impedance matching unit is used to perform impedance matching so that the impedance meets a preset antenna impedance matching condition at an operating frequency band of the first module and/or an operating frequency band of the second module.
The radio frequency circuit according to claim 1, wherein the first module comprises at least one of the following:

New Radio NR communication module; Long Term Evolution LTE communication module, Narrowband Internet of Things NB-IOT communication module, Machine-to-Machine MTC communication module, NR side link communication module, LTE side link communication module, WIFI communication module.
The radio frequency circuit according to claim 1, wherein the second module is a low power consumption wake-up module.
An electronic device comprising the radio frequency circuit according to any one of claims 1 to 10.