CN117955516A - Radio frequency circuit and electronic equipment - Google Patents

Abstract

The application discloses a radio frequency circuit and an electronic device, belonging to the technical field of communication, wherein the radio frequency circuit of the embodiment of the application comprises: an antenna; a first module, the first module being connected to the antenna; the second module is used for receiving a low-power consumption wake-up signal and triggering wake-up the first module to receive downlink physical signals and/or physical channels, and the second module is connected to the antenna through a first antenna feed unit or a power divider in the first module.

Description

Radio frequency circuit and electronic equipment

Technical Field

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

Background

The New air interface (NR) introduces a low power signal to reduce the power consumption of the terminal. For example, the electronic device may include a first module and a second module, the low power consumption signal includes a low power consumption wake-up signal, the first module may be turned off or set to a deep sleep state (deep-SLEEP STATE), a light sleep state (light-SLEEP STATE), or a micro sleep state (micro-SLEEP STATE) when the electronic device is idle, and the low power consumption wake-up signal for waking up the first module is monitored through the second module, thereby achieving the purpose of reducing power consumption of the electronic device. The first module and the second module have independent antenna resources, which can cause the antenna resources to occupy larger space of the terminal and increase cost.

Disclosure of Invention

The embodiment of the application provides a radio frequency circuit and electronic equipment, which can realize the simultaneous operation of a first module and a second module on the premise of not increasing antenna resources.

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

An antenna;

A first module, the first module being connected to the antenna;

The second module is used for receiving a low-power consumption wake-up signal and triggering wake-up the first module to receive downlink physical signals and/or physical channels, and the second module is connected to the antenna through a first antenna feed unit or a power divider in the first module.

In a second aspect, an electronic device is provided, the electronic device comprising the radio frequency circuit of the first aspect.

In an embodiment of the present application, a radio frequency circuit includes: an antenna; a first module, the first module being connected to the antenna; the second module is used for receiving a low-power consumption wake-up signal and triggering wake-up the first module to receive downlink physical signals and/or physical channels, and the second module is connected to the antenna through a first antenna feed unit or a power divider in the first module. Therefore, the first module and the second module use the same antenna resource, so that the space occupied by the antenna resource on the terminal can be reduced, and the miniaturization of the electronic equipment is facilitated.

Drawings

Fig. 1 is a block diagram of a wireless communication system to which embodiments of the present application are applicable;

Fig. 2 is a schematic structural diagram of a radio frequency circuit according to an embodiment of the present application;

FIG. 3 is a schematic diagram of a portion of a RF circuit according to an embodiment of the present application;

FIG. 4 is a schematic diagram of a portion of a RF circuit according to an embodiment of the present application;

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

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

FIG. 7 is a second schematic diagram of a RF circuit according to an embodiment of the present application;

FIG. 8 is a third schematic diagram of a RF circuit according to an embodiment of the present application;

FIG. 9 is a schematic diagram of a RF circuit according to an embodiment of the present application;

fig. 10 is a schematic structural diagram of a terminal according to an embodiment of the present application.

Detailed Description

The technical solutions of the embodiments of the present application will be clearly described below with reference to the drawings in the embodiments of the present application, and it is apparent that the described embodiments are some embodiments of the present application, but not all embodiments. All other embodiments, which are derived by a person skilled in the art based on the embodiments of the application, fall within the scope of protection of the application.

The terms first, second and the like in the description and in the claims, are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It is to be understood that the terms so used are interchangeable under appropriate circumstances such that the embodiments of the application are capable of operation in sequences other than those illustrated or otherwise described herein, and that the "first" and "second" distinguishing between objects generally are not limited in number to the extent that the first object may, for example, be one or more. Furthermore, in the description and claims, "and/or" means at least one of the connected objects, and the character "/" generally means a relationship in which the associated object is an "or" before and after.

It should be noted that the techniques described in the embodiments of the present application are not limited to long term evolution (Long Term Evolution, LTE)/LTE evolution (LTE-Advanced, LTE-a) systems, but may also be used in other wireless communication systems, such as code division multiple access (Code Division Multiple Access, CDMA), time division multiple access (Time Division Multiple Access, TDMA), frequency division multiple access (Frequency Division Multiple Access, FDMA), orthogonal frequency division multiple access (Orthogonal Frequency Division Multiple Access, OFDMA), single carrier frequency division multiple access (Single-carrier Frequency Division Multiple Access, SC-FDMA), and other systems. The terms "system" and "network" in embodiments of the application are often used interchangeably, and the techniques described may be used for both the above-mentioned systems and radio technologies, as well as other systems and radio technologies. The following description describes a New Radio (NR) system for exemplary purposes and NR terminology is used in much of the following description, but these techniques may also be applied to applications other than NR system applications, such as 6 th Generation (6G) communication systems.

Fig. 1 shows a block diagram of a wireless communication system to which an embodiment of the present application is applicable. The wireless communication system includes a terminal 101 and a network device 102. The terminal 101 may be a Mobile phone, a tablet Computer (Tablet Personal Computer), a Laptop (Laptop Computer) or a terminal-side device called a notebook, a Personal digital assistant (Personal DIGITAL ASSISTANT, PDA), a palm Computer, a netbook, an ultra-Mobile Personal Computer (ultra-Mobile Personal Computer, UMPC), a Mobile internet appliance (Mobile INTERNET DEVICE, MID), an augmented reality (augmented reality, AR)/Virtual Reality (VR) device, a robot, a wearable device (Wearable Device), a vehicle-mounted device (VUE), a pedestrian terminal (PUE), a smart home (home device with a wireless communication function, such as a refrigerator, a television, a washing machine, a furniture, etc.), a game machine, a Personal Computer (Personal Computer, a PC), a teller machine, or a self-service machine, etc., the wearable device includes: intelligent wrist-watch, intelligent bracelet, intelligent earphone, intelligent glasses, intelligent ornament (intelligent bracelet, intelligent ring, intelligent necklace, intelligent anklet, intelligent foot chain etc.), intelligent wrist strap, intelligent clothing etc.. It should be noted that the specific type of the terminal 101 is not limited in the embodiment of the present application. The network-side device 102 may include an access network device or a core network device, where the access network device 102 may also be referred to as a radio access network device, a radio access network (Radio Access Network, RAN), a radio access network function, or a radio access network element. The access network device 102 may include a base station, a WLAN access Point, a WiFi node, or the like, where the base station may be referred to as a node B, an evolved node B (eNB), an access Point, a base transceiver station (Base Transceiver Station, BTS), a radio base station, a radio transceiver, a Basic service set (Basic SERVICE SET, BSS), an Extended service set (Extended SERVICE SET, ESS), a home node B, a home evolved node B, a transmission and reception Point (TRANSMITTING RECEIVING Point, TRP), or some other suitable terminology in the field, and the base station is not limited to a specific technical vocabulary so long as the same technical effect is achieved, and it should be noted that the base station in the NR system is merely described by way of example in the embodiment of the present application, and the specific type of the base station is not limited.

The radio frequency circuit and the electronic device provided by the embodiment of the application are described in detail below through some embodiments and application scenarios thereof with reference to the accompanying drawings.

Referring to fig. 2, an embodiment of the present application provides a radio frequency circuit, including:

An antenna 11;

A first module 12, said first module 12 being connected to said antenna 11;

The second module 13 is configured to receive a low power consumption wake-up signal, trigger and wake-up the first module 12 to receive a downlink physical signal and/or a physical channel, where the second module 13 is connected to the antenna 11 through the first antenna feeding unit 14 or a power divider in the first module 12.

The second module 13 may also be called a low power wake-up module, a wake-up receiving module, a low power wake-up receiving module, or a wake-up module, etc.

In one embodiment, the second module 13 is configured to receive a low power wake-up signal, and trigger to wake-up the first module 12 to receive a target downlink physical signal and/or a target physical channel, where the target downlink physical signal may be a specific downlink physical signal, and the target physical channel may be a specific physical channel.

Wherein the first antenna feed unit 14 may be used for signal transmission between the second module 13 and the antenna 11, the first antenna feed unit 14 may include a first feeder through which the second module 13 is connected with the antenna 11, and a signal received by the antenna 11 may be transmitted to the second module 13 through the first feeder.

In one embodiment, the radio frequency circuit may further include a second antenna feeding unit 15, the first module 12 is connected to the antenna 11 through the second antenna feeding unit 15, so that two-way feeding is implemented through the first antenna feeding unit 14 and the second antenna feeding unit 15, and the first module 12 and the second module 13 may be turned on simultaneously.

In one embodiment, the output end of the power divider (Splitter) is connected to the second module 13, and the input end of the power divider is connected to the rf filter or the diplexer of the first module 12. The signal is divided into multiple paths by the power divider, and the first module 12 and the second module 13 can be started at the same time.

In addition, through the first antenna feeding unit 14 or the power divider in the first module 12, the first module 12 and the second module 13 may operate simultaneously, where the operation of the first module 12 may refer to that the first module 12 is in a communication state with the antenna 11, the operation of the first module 12 receives a specific downlink physical signal or physical channel, the operation of the second module 13 may refer to that the second module 13 is in a communication state with the antenna 11, and the second module 13 receives a wake-up signal with low power consumption. Operation may also be described as on, or initiated.

Specifically, in the case where the first module 12 operates, the first module 12 may receive a measurement signal to implement a measurement function, or the first module 12 may receive a downlink physical signal and/or a downlink control physical channel and/or a downlink data physical channel including the measurement signal when woken up by the second module 13. In case the second module 13 is operating, the second module 13 may receive a low power consumption wake-up signal.

In one embodiment, the first module 12 and the second module 13 operate simultaneously, and the second module 13 may receive a low power consumption wake-up signal; the first module 12 may receive the measurement signal to perform the measurement function, or the first module 12 may receive a downlink physical signal and/or a downlink control physical channel and/or a downlink data physical channel including the measurement signal.

It should be noted that the first module 12 may be a main communication module. Illustratively, as shown in fig. 3, the radio frequency front end of the main communication module may include a matching network, an antenna switching unit, a Duplexer (duplex), a radio frequency filter (RF filter), a Switch (Switch), a low noise Amplifier (Low Noise Amplifier, LNA), a Power Amplifier (PA), and the like. The antenna switching unit is connected with the antenna 11, and the main communication module can select different working frequency bands through the antenna switching unit; the impedance matching of the antenna 11 on different frequency bands can be flexibly realized through the matching network, so that the optimal performance of radio frequency signal transmission and reception is achieved; when the antenna switching unit is switched to a frequency division multiplexing (Frequency Division Duplex, FDD) frequency band, the simultaneous transmission and reception of signals in the frequency band can be realized through the duplexer, and the duplexer also has a radio frequency filtering function; when the antenna switching unit is switched to a time division multiplexing (Time Division Duplex, TDD) frequency band, after passing through the radio frequency filter, one of transmission or reception on the frequency band is selected through a switch; the uplink transmission amplifies the transmission signal by the PA, and the downlink reception amplifies the reception signal by the LNA. The radio frequency circuit includes a Transceiver part (i.e., a Transceiver unit) in addition to the radio frequency front-end part, converts a radio frequency signal to a baseband signal by down-conversion or up-conversion or converts a baseband signal to a radio frequency signal, and processes it by a baseband processing unit (Baseband processing).

In addition, the second module 13 may be a low power wake-up module. In one embodiment, as shown in fig. 4, the Low power wake-up module may include a radio frequency filter (e.g., a radio frequency band pass filter (Radio Frequency Band PASS FILTER, RF BPF)), a radio frequency envelope detection (RF Envelop detector), a Baseband amplifier (Baseband Amplifier, BB AMP), a Baseband filter (e.g., a Baseband Low-pass filter (BB LPF PASS FILTER)), a Comparator (Comparator) or an analog-to-digital converter (ADC), and a digital processing unit (e.g., a main controller), etc. The radio frequency signal is received by the antenna 11, matched with a network, subjected to band-pass filtering, amplified by the LNA to obtain an amplified radio frequency signal, subjected to radio frequency envelope detection, converted to a baseband signal, amplified, subjected to low-pass filtering to obtain an amplified baseband signal, and subjected to digital processing by the digital processing unit after the analog signal is converted into a digital signal by the comparator or the ADC. The use of envelope detection to convert a radio frequency signal to a baseband signal uses only signal Amplitude information and is therefore more suitable for Amplitude shift keying (Amplitude SHIFT KEYING, ASK) modulation.

It should be noted that, the radio frequency filter of the low-power consumption wake-up module may be connected to the first antenna feeding unit 14, so as to implement that the low-power consumption wake-up module and the main communication module use the same antenna resource; or the main communication module can comprise a power divider, and the radio frequency filter of the low-power consumption wake-up module can be connected with the power divider in the main communication module, so that the low-power consumption wake-up module and the main communication module use the same antenna resource.

In another embodiment, as shown in fig. 5, the low power wake-up module may include a radio frequency filter, a ring oscillator, a mixer (mixer), an intermediate frequency (INTERMEDIATE FREQUENCY, IF) amplifier (IF AMP), an intermediate frequency filter (IF BPF), intermediate frequency envelope detection (IF Envelop detector), a baseband amplifier, a baseband filter, a comparator or ADC, and a digital processing unit (e.g., a host controller). The radio frequency signal is received by an antenna 11, matched with a network, subjected to radio frequency band-pass filtering, and mixed with a local signal generated by a ring oscillator to be converted into an intermediate frequency signal; after intermediate frequency amplification and intermediate frequency filtering, an amplified intermediate frequency signal is obtained; converting the intermediate frequency signal into a baseband signal through intermediate frequency envelope detection, amplifying, and low-pass filtering to obtain an amplified baseband signal; and then the analog signal is converted into a digital signal through a comparator or an ADC, and the digital signal is processed in a digital processing unit. The envelope detection is adopted to change the radio frequency signal into the baseband signal, and only the signal amplitude information is utilized, so that the method is more suitable for ASK modulation.

In this embodiment, the radio frequency filter of the low power consumption wake-up module may be connected to the first antenna feeding unit 14, so as to implement that the low power consumption wake-up module and the main communication module use the same antenna resource; or the main communication module can comprise a power divider, and the radio frequency filter of the low-power consumption wake-up module can be connected with the power divider in the main communication module, so that the low-power consumption wake-up module and the main communication module use the same antenna resource.

It should be noted that the terminal may include two modules, the first module 12 is a main communication module for receiving a downlink physical signal or a physical channel, and the second module 13 is a low-power wake-up module (i.e., a low-power wake-up receiving module) for receiving a wake-up signal (i.e., a low-power wake-up signal). As shown in fig. 6, when the main communication module is idle, the main communication module may be turned off or set to a deep sleep state (deep-SLEEP STATE), a light sleep state (light-SLEEP STATE), or a micro-SLEEP STATE, and the low power consumption wake-up module monitors the low power consumption wake-up signal, and when the wake-up signal sent by the sending end is successfully detected and includes information for waking up the terminal, the wake-up main communication module is triggered to enter into an operating state, so that the main communication module can receive a downlink physical signal or a physical channel, and when the main communication module is not woken, the main communication module is in the off or deep sleep state, the light sleep state, or the micro sleep state, and only receives a part of the downlink physical signal or the physical channel, such as a measurement signal, or does not receive. In the related technology, the terminal introduces the low-power consumption wake-up module, and when the hardware resource units of the main communication module and the low-power consumption wake-up module have no conflict, the requirement of simultaneously receiving signals can be met. However, when there is a hardware resource conflict between the low power consumption wake-up module and the main communication module, a method for simultaneously receiving signals is not generally implemented.

The existing communication module of the terminal has high power consumption, the main communication module can be closed or set to be in a deep sleep state (deep-SLEEP STATE) or a light sleep state (light-SLEEP STATE) or a micro-sleep state (micro-SLEEP STATE) when idle through introducing the low power consumption wake-up module, and the low power consumption wake-up signal is monitored through the low power consumption wake-up module, so that the overall power consumption of the terminal is greatly reduced. In this embodiment, when the low-power consumption wake-up module is introduced, the terminal multiplexes the hardware units included in the existing communication module as much as possible, thereby reducing the cost and size of the terminal, and avoiding or reducing the influence on the performance of the existing communication module as much as possible. In addition, considering that for the terminal introducing the low-power consumption wake-up module, there is a need for the main communication module (i.e. the existing communication module) and the low-power consumption wake-up module to simultaneously receive signals, and there is a need for the main communication module to receive measurement signals and the low-power consumption wake-up module to monitor the low-power consumption wake-up signals, the hardware design of the radio frequency circuit in the embodiment supports the function.

In an embodiment of the present application, a radio frequency circuit includes: an antenna 11; a first module 12, said first module 12 being connected to said antenna 11; the second module 13 is configured to receive a low power consumption wake-up signal, trigger and wake-up the first module 12 to receive a downlink physical signal and/or a physical channel, where the second module 13 is connected to the antenna 11 through the first antenna feeding unit 14 or a power divider in the first module 12. In this way, the same antenna resource is used by the first module 12 and the second module 13, so that the space occupied by the antenna resource in the terminal can be reduced, which is beneficial to miniaturization of the electronic device.

Optionally, as shown in fig. 7, the radio frequency circuit further includes a second antenna feeding unit 15, and the first module 12 is connected to the antenna 11 through the second antenna feeding unit 15.

Wherein the second antenna feed unit 15 may be used for signal transmission between the first module 12 and the antenna 11, the second antenna feed unit 15 may comprise a second feeder through which the first module 12 is connected with the antenna 11, and signals received by the antenna 11 may be transmitted to the first module 12 through the second feeder.

In addition, the number of the antennas 11 may be one or more, one antenna 11 may correspond to one first antenna feeding unit 14 and one second antenna feeding unit 15, each antenna 11 may be connected to the second module 13 through the corresponding first antenna feeding unit 14, and may be connected to the first module 12 through the corresponding second antenna feeding unit 15, that is, the first module 12 and the second module 13 may transmit and receive signals through the plurality of antennas 11.

In this embodiment, the radio frequency circuit further includes a second antenna feeding unit 15, and the first module 12 is connected to the antenna 11 through the second antenna feeding unit 15, so that the first module 12 and the second module 13 can be connected to the antenna 11 through the first antenna feeding unit 14 and the second antenna feeding unit 15, respectively, and the first module 12 and the second module 13 use the same antenna resource through two paths of feeding, so that the space occupied by the antenna resource in the terminal can be reduced.

Optionally, as shown in fig. 7, the radio frequency circuit further includes an isolation unit 16, a first end of the isolation unit 16 is connected to the antenna 11, a second end of the isolation unit 16 is connected to the first antenna feeding unit 14, and a third end of the isolation unit 16 is connected to the second antenna feeding unit 15.

Among other things, isolation units (isolation) can be used to reduce signal leakage between the feeds of the two antennas 11, reducing potential coupling and intermodulation interference. For example, the isolation unit 16 may adopt a phase shift network, LC filter loading, energy flow traction/blocking, or hybrid ring feeding (hybrid RING FEEDING) structure, etc., and the isolation unit 16 works on the principle that the mutually coupled electromagnetic signals are positively and negatively offset or re-radiated back into the air to a certain extent, so that the electromagnetic energy flow between the double-fed ports can be reduced, and the isolation between the double-fed ports can be improved.

In one embodiment, an isolation unit 16 is connected between the first antenna feed unit 14 and the second antenna feed unit 15. The first antenna feed unit 14 and the second antenna feed unit 15 may include a first impedance matching unit and a second impedance matching unit, respectively. The first antenna feed unit 14 is connected to the second module 13 and the second antenna feed unit 15 is connected to the first module 12. The first module 12 and the second module 13 may be turned on simultaneously.

In this embodiment, the radio frequency circuit further includes an isolation unit 16, a first end of the isolation unit 16 is connected to the antenna 11, a second end of the isolation unit 16 is connected to the first antenna feeding unit 14, and a third end of the isolation unit 16 is connected to the second antenna feeding unit 15. In this way, the isolation unit 16 can reduce signal leakage between the first antenna feed unit 14 and the second antenna feed unit 15, reduce potential coupling and intermodulation interference, and improve performance of the radio frequency circuit.

Alternatively, as shown in fig. 7, the first antenna feeding unit 14 includes a first impedance matching unit, and the second module 13 is connected to the second end of the isolation unit 16 through the first impedance matching unit.

Wherein the first impedance matching unit may comprise an impedance matching network.

In this embodiment, the first antenna feeding unit 14 includes a first impedance matching unit, and the second module 13 is connected to the second end of the isolation unit 16 through the first impedance matching unit, and impedance matching is performed through the first impedance matching unit, so that the communication branch from the second module 13 to the antenna 11 can meet the impedance requirement of the antenna 11, thereby improving the performance of the radio frequency circuit.

Alternatively, as shown in fig. 7, the second antenna feeding unit 15 includes a second impedance matching unit through which the first module 12 is connected to the first end of the isolation unit 16.

Wherein the second impedance matching unit may comprise an impedance matching network.

In this embodiment, the second antenna feeding unit 15 includes a second impedance matching unit, and the first module 12 is connected to the first end of the isolation unit 16 through the second impedance matching unit, and impedance matching is performed through the second impedance matching unit, so that the communication branches from the first module 12 to the antenna 11 can meet the impedance requirement of the antenna 11, and performance of the radio frequency circuit can be improved.

Optionally, as shown in fig. 7, the second module 13 includes a first rf filter 131, a first rf envelope detection unit 132, and a first baseband processing unit 133, where one end of the first rf filter 131 is connected to the first antenna feeding unit 14, the other end of the first rf filter 131 is connected to the first rf envelope detection unit 132, and the rf envelope detection unit is connected to the first baseband processing unit 133.

The other end of the first rf filter 131 may be connected to the first rf envelope detection unit 132 through a first LNA.

In this embodiment, one end of the first rf filter 131 is connected to the first antenna feeding unit 14, the other end of the first rf filter 131 is connected to the first rf envelope detection unit 132, and the rf envelope detection unit is connected to the first baseband processing unit 133, so that the second module 13 is connected to the first antenna feeding unit 14 through the first rf filter 131, and the same antenna resource is used as the first module 12, so that the space occupied by the antenna resource in the terminal can be reduced.

Alternatively, as shown in fig. 7, the first module 12 includes a first antenna switching unit 121, a second rf filter 122, a first duplexer 123, a first transceiver unit 124, and a second baseband processing unit 125, where one end of the first antenna switching unit 121 is connected to the second antenna feeding unit 15, one end of the first antenna switching unit 121 is connected to the second rf filter 122 and the first duplexer 123, and both the second rf filter 122 and the first duplexer 123 are connected to the second baseband processing unit 125 through the first transceiver unit 124;

Wherein the second rf filter 122 operates in a time division multiplexing TDD frequency band, and the first duplexer 123 operates in a frequency division multiplexing FDD frequency band.

The first antenna switching unit 121 may control the first module 12 to operate in a TDD frequency band or an FDD frequency band. The first antenna switching unit 121 may control the electrical communication between the second rf filter 122 and the antenna 11, so as to control the first module 12 to operate in the TDD frequency band; or the first antenna switching unit 121 may control the electrical communication between the first duplexer 123 and the antenna 11, thereby controlling the first module 12 to operate in the FDD band. For example, the first antenna switching unit 121 may be a single-pole multi-throw switch, the active end of which is connected to the second antenna feeding unit 15, the first inactive end of which is connected to the second rf filter 122, and the second inactive end of which is connected to the first duplexer 123.

In addition, the other end of the second rf filter 122 may be connected to the first transceiver unit 124 through a switch, a second LNA and a first PA. Illustratively, the other end of the second rf filter 122 is connected to a first end of a switch, a second end of the switch is connected to the second LNA, and a third end of the switch is connected to the first PA. The first module 12 receives a signal through the second rf filter 122 with the first end of the switch in conduction with the second end of the switch; with the first end of the switch in conduction with the third end of the switch, the first module 12 sends a signal through the second rf filter 122.

The first duplexer 123 may be connected to the first transceiver unit 124 through a third LNA and a second PA. Illustratively, a first end of the first duplexer 123 is connected to the first antenna switching unit 121, a second end of the first duplexer 123 is connected to the third LNA, and a third end of the first duplexer 123 is connected to the second PA. The third LNA and the second PA are both connected to the first transceiver unit 124, the first module 12 receives signals through the first duplexer 123, the third LNA, and the communication branch of the first transceiver unit 124, and the first module 12 sends signals through the first duplexer 123, the second PA, and the communication branch of the first transceiver unit 124.

It should be noted that, in this embodiment, the first module 12 may select different operating frequency bands through the first antenna switching unit 121; when the first antenna switching unit 121 switches to the FDD band, simultaneous transmission and reception of signals in the band can be achieved through the first duplexer, which also has a radio frequency filtering function; when the first antenna switching unit 121 switches to the TDD band, after passing through the second radio frequency filter 122, one of transmission or reception on the band is selected by a switch; the uplink transmission amplifies the transmission signal by the first PA, and the downlink reception amplifies the reception signal by the second LNA. The first transceiving unit 124 converts a radio frequency signal to a baseband signal by down-conversion or up-conversion or converts a baseband signal to a radio frequency signal and processes it by the second baseband processing unit 125.

In this embodiment, one end of the first antenna switching unit 121 is connected to the second antenna feeding unit 15, one end of the first antenna switching unit 121 is connected to the second rf filter 122 and the first duplexer 123, and both the second rf filter 122 and the first duplexer 123 are connected to the second baseband processing unit 125 through the first transceiver unit 124, so that the first module 12 is connected to the second antenna feeding unit 15 through the first antenna switching unit 121, so that the same antenna resources as those used by the second module 13 are used, and the space occupied by the antenna resources in the terminal can be reduced.

Optionally, as shown in fig. 8 and 9, the second module 13 includes a second rf envelope detection unit 134 and a third baseband processing unit 135, and the third baseband processing unit 135 is connected to the power divider in the first module 12 through the second rf envelope detection unit 134.

The second module 13 may further include a fourth LNA, where the power divider in the first module 12 is connected to the fourth LNA, the fourth LNA is connected to the second rf envelope detection unit 134, and the second rf envelope detection unit 134 is connected to the third baseband processing unit 135.

In this embodiment, the second module 13 includes a second rf envelope detection unit 134 and a third baseband processing unit 135, where the third baseband processing unit 135 is connected to the power divider in the first module 12 through the second rf envelope detection unit 134, so that the second module 13 is connected to the power divider in the first module 12 through the second rf filter 122, so that the same antenna resource is used as the first module 12, and the space occupied by the antenna resource in the terminal can be reduced.

Optionally, as shown in fig. 8, the first module 12 includes a second antenna switching unit 126, a third radio frequency filter 127, a first power divider 128, a second transceiver unit 129, and a fourth baseband processing unit 1210, where the antenna 11 is connected to the third radio frequency filter 127 through the second antenna switching unit 126, the third radio frequency filter 127 is connected to an input end of the first power divider 128, a first output end of the first power divider 128 is connected to a second radio frequency envelope detection unit 134 in the second module 13, a second output end of the first power divider 128 is connected to the second transceiver unit 129, and the second transceiver unit 129 is connected to the fourth baseband processing unit 1210;

Wherein the third rf filter 127 operates in the TDD band.

The other end of the third rf filter 127 may be connected to the second transceiver 129 through a switch, a fifth LNA, and a third PA. Illustratively, the other end of the third rf filter 127 is connected to a first end of a switch, a second end of the switch is connected to an input end of the first power divider 128, a second output end of the first power divider 128 is connected to the second transceiver unit 129 through a fifth LNA, and a third end of the switch is connected to the second transceiver unit 129 through a third PA. The first module 12 receives a signal through the third rf filter 127 with the first end of the switch in conduction with the second end of the switch; with the first end of the switch in conduction with the third end of the switch, the first module 12 sends a signal through the third radio frequency filter 127.

Further, the first module 12 may further include a third impedance matching unit, and the second antenna switching unit 126 may be connected to the antenna 11 through the third impedance matching unit. The third impedance matching unit may include an impedance matching network.

Illustratively, the second antenna switching unit 126 may be a single-pole multi-throw switch, the active end of which is connected to the third impedance matching unit, the first inactive end of which is connected to the third rf filter 127, and the second inactive end of which is connected to the second diplexer 1211.

In this embodiment, the third rf filter 127 is connected to the input end of the first power divider 128, the first output end of the first power divider 128 is connected to the second rf envelope detection unit 134 in the second module 13, and the second output end of the first power divider 128 is connected to the second transceiver unit 129, so that the first power divider 128 in the first module 12 can use the same antenna resources as the second module 13, and thus the space occupied by the antenna resources in the terminal can be reduced.

Optionally, as shown in fig. 9, the first module 12 includes a second antenna switching unit 126, a second duplexer 1211, a second power divider 1212, a second transceiver unit 129, and a fourth baseband processing unit 1210, where the antenna 11 is connected to the second duplexer 1211 through the second antenna switching unit 126, the second duplexer 1211 is connected to an input end of the second power divider 1212, a first output end of the second power divider 1212 is connected to a second rf envelope detection unit 134 in the second module 13, a second output end of the second power divider 1212 is connected to the second transceiver unit 129, and the second transceiver unit 129 is connected to the fourth baseband processing unit 1210;

Wherein the second diplexer 1211 operates in the FDD band.

The second duplexer 1211 may be connected to the second transceiver 129 via a sixth LNA and a fourth PA. Illustratively, a first end of the second duplexer 1211 is connected to the second antenna switching unit 126, a second end of the second duplexer 1211 is connected to an input end of the second power divider 1212, a second output end of the second power divider 1212 is connected to the second transceiver unit 129 through a sixth LNA, and a third end of the second duplexer 1211 is connected to the fourth PA. The sixth LNA and the fourth PA are connected to the second transceiver 129, the first module 12 receives signals through the second diplexer 1211, the sixth LNA, the second power divider 1212, and the communication leg of the second transceiver 129, and the first module 12 sends signals through the second diplexer 1211, the fourth PA, and the communication leg of the second transceiver 129.

It should be noted that, the first power divider 128 and the second power divider 1212 may be different power dividers, because only one communication branch of the first power divider 128 and the communication branch of the second power divider 1212 are operated at the same time, and the first power divider 128 and the second power divider 1212 may be connected to the same second module 13. Or the first power divider 128 and the second power divider 1212 may be the same power divider, and the input ends of the power dividers are respectively connected to the third rf filter 127 and the second duplexer 1211, because the third rf filter 127 and the second duplexer 1211 are controlled by the second antenna switching unit 126, only one of them works at the same time, and the work of the power divider is not affected.

In this embodiment, the second diplexer 1211 is connected to the input end of the second power divider 1212, the first output end of the second power divider 1212 is connected to the second rf envelope detection unit 134 in the second module 13, and the second output end of the second power divider 1212 is connected to the second transceiver unit 129, so that the second power divider 1212 in the first module 12 can implement that the first module 12 and the second module 13 use the same antenna resource, and thus the space occupied by the antenna resource can be reduced.

Optionally, the first module 12 includes at least one of:

A New air interface (NR) communication module; a long term evolution (Long Term Evolution, LTE) communication module, a narrowband internet of things (Narrow Band Internet of Things, NB-IOT) communication module, a Machine-to-Machine (MTC) communication module, an NR sidelink communication module, an LTE sidelink communication module, a WIFI communication module.

Optionally, the second module 13 is a low power consumption wake-up module.

According to the embodiment, the antenna feed unit and the isolation unit are added, so that the low-power consumption wake-up module can use all antennas of the main communication module, and the low-power consumption wake-up module and the main communication module can work simultaneously; or by adding the power divider, the low-power consumption wake-up module can use all hardware units of the main communication module in front of the duplexer or the radio frequency filter, and for example, all antennas, the impedance matching unit, the antenna switching unit and the radio frequency filter are included, and the low-power consumption wake-up module and the main communication module can work simultaneously. According to the embodiment, when the hardware resource conflict exists between the low-power consumption awakening module and the main communication module, the low-power consumption awakening module and the main communication module are supported to work simultaneously.

Example 1:

in this embodiment, the first module is a main communication module, and the second module is a low-power consumption wake-up module. The radio frequency circuit comprises a main communication module and a low-power consumption wake-up module, wherein the main communication module can be an NR communication module; the wireless communication system comprises at least one of an LTE communication module, an 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, wherein a low-power consumption wake-up module is only used for receiving low-power consumption signals and has no transmitting function.

As shown in fig. 7, the rf front end in this embodiment includes two antenna feeding units, where the first antenna feeding unit 14 is connected to the low power consumption wake-up module, the second antenna feeding unit 15 is connected to the main communication module, and an isolation unit is connected between the two antenna feeding units, so as to reduce signal leakage between the two antenna feeding units, and reduce potential coupling and intermodulation interference. The first antenna feed unit includes a first impedance matching unit for adjusting impedance matching to meet antenna requirements of the operating frequency band of the low power wake-up module, and similarly, the second antenna feed unit includes a second impedance matching unit for adjusting impedance matching to meet antenna requirements of the operating frequency band of the main communication module. The operating frequency bands of the primary communication module and the low power wake-up module may be the same or different. In addition, in this embodiment, only one antenna is used as an example to perform a schematic description of a hardware structure, and for a plurality of antennas, the hardware structure of each antenna connection is similar, which is not repeated in this embodiment.

In this embodiment, the received signal enters the main communication module and the low-power consumption wake-up module through the first antenna feeding unit and the second antenna feeding unit, respectively, so that the main communication module and the low-power consumption wake-up module receive simultaneously. For example, the main communication module receives the measurement signal to realize the measurement function, the low-power consumption wake-up module monitors and receives the low-power consumption wake-up signal for waking up the main communication module, and when the low-power consumption wake-up module successfully detects the low-power consumption wake-up signal for waking up the terminal, the wake-up main communication module is triggered to monitor the downlink control channel, so that the main communication module can only perform measurement when no communication needs exist to reduce the power consumption, and when the communication needs arrive, the wake-up main communication module can be triggered by the wake-up receiver.

Example 2:

In this embodiment, the radio frequency circuit includes a main communication module and a low power consumption wake-up module, where the main communication module may be an NR communication module; the wireless communication system comprises at least one of an LTE communication module, an 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, wherein a low-power consumption wake-up module is only used for receiving low-power consumption signals and has no transmitting function.

In this embodiment, the rf front-end includes a power divider, as shown in fig. 8 and 9, where the first power divider and the second power divider are the same power divider, and the gray-scale display portion indicates that the portion is not currently operating. For the FDD frequency band transceiver module, one end of the power divider is connected with the duplexer receiving passage, and for the TDD frequency band transceiver module, one end of the power divider is connected with the receiving passage, and the radio frequency signal is divided into two paths through the power divider and respectively enters the main communication module and the low-power consumption wake-up module, so that the main communication module and the low-power consumption wake-up module can receive simultaneously. For example, the main communication module receives the measurement signal to realize the measurement function, the low-power consumption wake-up module monitors and receives the low-power consumption wake-up signal for waking up the main communication module, and when the low-power consumption wake-up module successfully detects the low-power consumption wake-up signal for waking up the terminal, the wake-up main communication module is triggered to monitor the downlink control channel, so that the main communication module can only perform measurement when no communication needs exist to reduce the power consumption, and when the communication needs arrive, the wake-up main communication module can be triggered by the wake-up receiver. In this embodiment, because the power divider is adopted, compared with the case that only the main communication module is turned on, the main communication module and the low-power wake-up module are turned on at the same time, which brings a certain performance loss to the main communication module. In addition, in this embodiment, only one antenna is used as an example to perform a schematic description of a hardware structure, and for a plurality of antennas, the hardware structure of each antenna connection is similar, which is not repeated in this embodiment.

The embodiment of the application also provides electronic equipment which comprises the radio frequency circuit.

Taking an electronic device as an example, the terminal includes the radio frequency circuit according to the embodiment of the present application.

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

Those skilled in the art will appreciate that terminal 1000 can also include a power source (e.g., a battery) for powering the various components, which can be logically connected to processor 1010 by a power management system so as to perform functions such as managing charge, discharge, and power consumption by the power management system. The terminal structure shown in fig. 10 does not constitute a limitation of the terminal, and the terminal may include more or less components than shown, or may combine some components, or may be arranged in different components, which will not be described in detail herein.

It should be appreciated that in embodiments of the present application, the input unit 1004 may include a graphics processing unit (Graphics Processing Unit, GPU) 10041 and a microphone 10042, where the graphics processor 10041 processes image data of still pictures or video obtained by an image capturing device (e.g., a camera) in a video capturing mode or an image capturing 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, or the like. The user input unit 1007 includes at least one of a touch panel 10071 and other input devices 10072. The touch panel 10071 is also referred to as a touch screen. The touch panel 10071 can include two portions, a touch detection device and a touch controller. Other input devices 10072 may include, but are not limited to, a physical keyboard, function keys (e.g., volume control keys, switch keys, etc.), a trackball, a mouse, a joystick, and so forth, which are not described in detail herein.

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

The memory 1009 may be used to store software programs or instructions and various data. The memory 1009 may mainly include a first memory area storing programs or instructions and a second memory area storing data, wherein the first memory area may store an operating system, application programs or instructions (such as a sound playing function, an image playing function, etc.) required for at least one function, and the like. Further, the memory 1009 may include volatile memory or nonvolatile memory, or the memory 1009 may include both volatile and nonvolatile memory. The nonvolatile Memory may be a Read-Only Memory (ROM), a Programmable ROM (PROM), an Erasable PROM (EPROM), an Electrically Erasable EPROM (EEPROM), or a flash Memory. The volatile memory may be random access memory (Random Access Memory, RAM), static random access memory (STATIC RAM, SRAM), dynamic random access memory (DYNAMIC RAM, DRAM), synchronous Dynamic Random Access Memory (SDRAM), double data rate Synchronous dynamic random access memory (Double DATA RATE SDRAM, DDRSDRAM), enhanced Synchronous dynamic random access memory (ENHANCED SDRAM, ESDRAM), synchronous link dynamic random access memory (SYNCH LINK DRAM, SLDRAM), and Direct random access memory (DRRAM). Memory 1009 in embodiments of the 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 that primarily processes operations involving an operating system, user interface, application programs, and the like, and a modem processor that primarily processes wireless communication signals, such as a baseband processor. It will be appreciated that the modem processor described above may not be integrated into the processor 1010.

Wherein, the radio frequency unit includes radio frequency circuit, and the radio frequency circuit includes:

An antenna;

A first module, the first module being connected to the antenna;

The second module is used for receiving a low-power consumption wake-up signal and triggering wake-up the first module to receive downlink physical signals and/or physical channels, and the second module is connected to the antenna through a first antenna feed unit or a power divider in the first module.

Optionally, the radio frequency circuit further includes a second antenna feed unit, and the first module is connected to the antenna through the second antenna feed unit.

Optionally, the radio frequency circuit further includes an isolation unit, a first end of the isolation unit is connected with the antenna, a second end of the isolation unit is connected with the first antenna feeding unit, and a third end of the isolation unit is connected with the second antenna feeding unit.

Optionally, the first antenna feeding unit includes a first impedance matching unit, and the second module is connected to the second end of the isolation unit through the first impedance matching unit.

Optionally, the second antenna feed unit includes a second impedance matching unit, and the first module is connected to the first end of the isolation unit through the second impedance matching unit.

Optionally, the second module includes a first radio frequency filter, a first radio frequency envelope detection unit and a first baseband processing unit, one end of the first radio frequency filter is connected with the first antenna feeding unit, the other end of the first radio frequency filter is connected with the first radio frequency envelope detection unit, and the radio frequency envelope detection unit is connected with the first baseband processing unit.

Optionally, the first module includes a first antenna switching unit, a second radio frequency filter, a first duplexer, a first transceiver unit and a second baseband processing unit, one end of the first antenna switching unit is connected with the second antenna feeding unit, one end of the first antenna switching unit is respectively connected with the second radio frequency filter and the first duplexer, and the second radio frequency filter and the first duplexer are both connected with the second baseband processing unit through the first transceiver unit;

The second radio frequency filter works in a time division multiplexing (TDD) frequency band, and the first duplexer works in a frequency division multiplexing (FDD) frequency band.

Optionally, the second module includes a second radio frequency envelope detection unit and a third baseband processing unit, and the third baseband processing unit is connected with the power divider in the first module through the second radio frequency envelope detection unit.

Optionally, the first module includes a second antenna switching unit, a third radio frequency filter, a first power divider, a second transceiver unit and a fourth baseband processing unit, where the antenna is connected with the third radio frequency filter through the second antenna switching unit, the third radio frequency filter is connected with an input end of the first power divider, a first output end of the first power divider is connected with a second radio frequency envelope detection unit in the second module, a second output end of the first power divider is connected with the second transceiver unit, and the second transceiver unit is connected with the third baseband processing unit;

Wherein the third radio frequency filter operates in a TDD frequency band.

Optionally, the first module includes a second antenna switching unit, a second duplexer, a second power divider, a second transceiver unit and a fourth baseband processing unit, where the antenna is connected with the second duplexer through the second antenna switching unit, the second duplexer is connected with an input end of the second power divider, a first output end of the second power divider is connected with a second radio frequency envelope detection unit in the second module, a second output end of the second power divider is connected with the second transceiver unit, and the second transceiver unit is connected with the third baseband processing unit;

Wherein the second diplexer operates in the FDD frequency band.

Optionally, the first module includes at least one of:

A new air interface NR communication module; the system comprises a Long Term Evolution (LTE) communication module, a narrowband internet of things (NB-IOT) communication module, a machine-to-Machine (MTC) communication module, an NR side link communication module, an LTE side link communication module and a WIFI communication module.

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

It should be noted that, in this document, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising one … …" does not exclude the presence of other like elements in a process, method, article, or apparatus that comprises the element.

The embodiments of the present application have been described above with reference to the accompanying drawings, but the present application is not limited to the above-described embodiments, which are merely illustrative and not restrictive, and many forms may be made by those having ordinary skill in the art without departing from the spirit of the present application and the scope of the claims, which are to be protected by the present application.

Claims (13)

1.A radio frequency circuit, comprising:

An antenna;

A first module, the first module being connected to the antenna;

The second module is used for receiving a low-power consumption wake-up signal and triggering wake-up the first module to receive downlink physical signals and/or physical channels, and the second module is connected to the antenna through a first antenna feed unit or a power divider in the first module.

2. The radio frequency circuit of claim 1, further comprising a second antenna feed unit, wherein the first module is coupled to the antenna through the second antenna feed unit.

3. The radio frequency circuit of claim 2, further comprising an isolation unit, a first end of the isolation unit being connected to the antenna, a second end of the isolation unit being connected to the first antenna feed unit, and a third end of the isolation unit being connected to the second antenna feed unit.

4. A radio frequency circuit according to claim 3, wherein the first antenna feed unit comprises a first impedance matching unit, and the second module is connected to the second end of the isolation unit via the first impedance matching unit.

5. A radio frequency circuit according to claim 3, wherein the second antenna feed unit comprises a second impedance matching unit, the first module being connected to the first end of the isolation unit by the second impedance matching unit.

6. The radio frequency circuit according to claim 1, wherein the second module comprises a first radio frequency filter, a first radio frequency envelope detection unit and a first baseband processing unit, one end of the first radio frequency filter is connected with the first antenna feed unit, the other end of the first radio frequency filter is connected with the first radio frequency envelope detection unit, and the radio frequency envelope detection unit is connected with the first baseband processing unit.

7. The radio frequency circuit according to claim 2, wherein the first module comprises a first antenna switching unit, a second radio frequency filter, a first duplexer, a first transceiver unit, and a second baseband processing unit, one end of the first antenna switching unit is connected to the second antenna feeding unit, one end of the first antenna switching unit is connected to the second radio frequency filter and the first duplexer, respectively, and the second radio frequency filter and the first duplexer are connected to the second baseband processing unit through the first transceiver unit;

The second radio frequency filter works in a time division multiplexing (TDD) frequency band, and the first duplexer works in a frequency division multiplexing (FDD) frequency band.

8. The radio frequency circuit of claim 1, wherein the second module comprises a second radio frequency envelope detection unit and a third baseband processing unit, the third baseband processing unit being coupled to a power divider in the first module through the second radio frequency envelope detection unit.

9. The radio frequency circuit according to claim 8, wherein the first module comprises a second antenna switching unit, a third radio frequency filter, a first power divider, a second transceiver unit and a fourth baseband processing unit, the antenna is connected with the third radio frequency filter through the second antenna switching unit, the third radio frequency filter is connected with an input end of the first power divider, a first output end of the first power divider is connected with a second radio frequency envelope detection unit in the second module, a second output end of the first power divider is connected with the second transceiver unit, and the second transceiver unit is connected with the fourth baseband processing unit;

Wherein the third radio frequency filter operates in a TDD frequency band.

10. The radio frequency circuit according to claim 8, wherein the first module comprises a second antenna switching unit, a second duplexer, a second power divider, a second transceiver unit, and a fourth baseband processing unit, the antenna is connected to the second duplexer through the second antenna switching unit, the second duplexer is connected to an input terminal of the second power divider, a first output terminal of the second power divider is connected to a second radio frequency envelope detection unit in the second module, a second output terminal of the second power divider is connected to the second transceiver unit, and the second transceiver unit is connected to the fourth baseband processing unit;

Wherein the second diplexer operates in the FDD frequency band.

11. The radio frequency circuit of claim 1, wherein the first module comprises at least one of:

A new air interface NR communication module; the system comprises a Long Term Evolution (LTE) communication module, a narrowband internet of things (NB-IOT) communication module, a machine-to-Machine (MTC) communication module, an NR side link communication module, an LTE side link communication module and a WIFI communication module.

12. The radio frequency circuit of claim 1, wherein the second module is a low power wake-up module.

13. An electronic device comprising the radio frequency circuit of any one of claims 1-12.