Radio frequency circuit, power regulation method, and electronic device

Abstract

The present application relates to the field of communications, and discloses a radio frequency circuit, a power regulation method, and an electronic device, for use in when a power measurement of a radio frequency feedback path of an electronic device is abnormal, preventing an input power of a PA from exceeding an input power threshold of the PA. The radio frequency circuit comprises: a modem, an RFIC, a PA, an antenna port, a radio frequency feedback path, and an ADC. The modem is configured to: control the RFIC to traverse output power levels to obtain the calibration values of output powers of the PA respectively corresponding to the output power levels; determine the maximum output power level of the RFIC on the basis of the calibration values of the output powers of the PA; detect whether the power measurement of the radio frequency feedback path is normal; and if the power measurement of the radio frequency feedback path is abnormal, and if an output power of the PA measured by the radio frequency feedback path is lower than the calibration values of the output powers of the PA corresponding to the output power levels, control the output power level of the RFIC to be lower than or equal to the maximum output power level.

Description

Radio frequency circuit, power regulation method and electronic device

[0001] The present application claims priority from the Chinese patent application No. 202410447505.6 filed on April 12, 2024, and entitled "Radio frequency circuit, power regulation method and electronic device", the content of which is incorporated herein by reference in its entirety. TECHNICAL FIELD

[0002] The present application relates to the field of communication, and in particular, to a radio frequency circuit, a power regulation method and an electronic device. BACKGROUND

[0003] In an electronic device, a modulator-demodulator, a radio frequency integrated circuit (RFIC), a power amplifier (PA) and an antenna port are connected in sequence, and the electronic device further includes a radio frequency feedback path electromagnetically coupled with a wire between the PA and the antenna port. The radio frequency feedback path performs real-time power detection on the output power of the PA, and sends a feedback signal to the modulator-demodulator. The modulator-demodulator adjusts the output power level of the RFIC according to the feedback signal, so as to adjust the output power of the RFIC, and adjust the output power of the PA to the antenna port.

[0004] For example, if the feedback signal indicates that the output power of the PA is higher than the target output power, the modulator-demodulator reduces the output power level of the RFIC, so as to reduce the output power of the RFIC, and reduce the output power of the PA. If the feedback signal indicates that the output power of the PA is lower than the target output power, the modulator-demodulator increases the output power level of the RFIC, so as to increase the output power of the RFIC, and increase the output power of the PA. Through this negative feedback mechanism, the output power of the PA can be stabilized at the target output power.

[0005] However, when the power detection of the radio frequency feedback path is abnormal, for example, the output power of the PA detected by the radio frequency feedback path is lower than the actual output power, the feedback signal output by the radio frequency feedback path to the modulator-demodulator is also low, and the modulator-demodulator will increase the output power level of the RFIC according to the feedback signal, so as to increase the output power of the RFIC, which may cause the input power of the PA to exceed the input power threshold of the PA. SUMMARY

[0006] The embodiments of the present application provide a radio frequency circuit, a power regulation method and an electronic device, which are used to avoid the input power of the PA exceeding the input power threshold of the PA when the power detection of the radio frequency feedback path of the electronic device is abnormal.

[0007] To achieve the above object, embodiments of the present application adopt the following technical solutions:

[0008] In a first aspect, a radio frequency circuit is provided, comprising a modem, an RFIC, a PA, an antenna port, a radio frequency feedback path, and an analog digital converter (ADC). An output end of the modem is connected to an input end of the RFIC. An output end of the RFIC is connected to an input end of the PA. An output end of the PA is connected to the antenna port. A wire between the PA and the antenna port is electromagnetically coupled with the radio frequency feedback path. A first end of the radio frequency feedback path is grounded. A second end of the radio frequency feedback path is connected to an input end of the ADC. An output end of the ADC is connected to an input end of the modem, for power detection of an output power of the PA. The modem is configured to: control the RFIC to traverse each output power level, and obtain a calibration value of the output power of the PA corresponding to each output power level, the output power level corresponding to the output power of the RFIC in one-to-one manner; determine a maximum output power level of the RFIC according to the calibration value of the output power of the PA, the calibration value of the output power of the PA corresponding to the maximum output power level being less than or equal to a threshold of the output power of the PA, the threshold of the output power of the PA being equal to a threshold of the input power of the PA plus a gain of the PA; detect whether the power detection of the radio frequency feedback path is normal; and if the power detection of the radio frequency feedback path is abnormal, and the output power of the PA detected by the radio frequency feedback path is less than the calibration value of the output power of the PA corresponding to the current output power level, control the output power level of the RFIC to be less than or equal to the maximum output power level.

[0009] The power regulation method provided by the embodiments of the present application can be used for a single electronic device. The RFIC traverses each output power level, and the calibration value of the output power of the PA corresponding to each output power level is obtained. The electronic device adaptively determines the maximum output power level of the RFIC. When the power detection of the radio frequency feedback path is abnormal, the modem controls the output power level of the RFIC to be less than or equal to the maximum output power level, so that the output power of the RFIC is limited, the input power of the PA does not exceed the threshold of the input power of the PA, and the PA can work normally.

[0010] In a possible implementation, detecting whether the power detection of the radio frequency feedback path is normal comprises: if the absolute value of the difference between the calibration value of the output power of the PA corresponding to the current output power level of the RFIC and the output power of the PA detected by the radio frequency feedback path is greater than a preset power difference, it is detected that the power detection of the radio frequency feedback path is abnormal, otherwise, it is detected that the power detection of the radio frequency feedback path is normal.

[0011] In a normal state, the actual output power of the PA is expected to be equal to the nominal value of the output power of the PA corresponding to the current output power level. When the output power of the PA detected by the radio frequency feedback channel is greatly different from the actual output power of the PA, the power detection of the radio frequency feedback channel will be abnormal. Therefore, whether the power of the radio frequency feedback channel is abnormal is determined according to the difference between the nominal value of the output power of the PA corresponding to the current output power level and the output power of the PA detected by the radio frequency feedback channel.

[0012] In a possible implementation, the control RFIC traverses each output power level and obtains the nominal value of the output power of the PA corresponding to each output power level, including: the control RFIC traverses each output power level under different environmental temperatures and different frequency points, and obtains the nominal value of the output power of the PA corresponding to each output power level under different environmental temperatures and different frequency points.

[0013] Since the environmental temperature and the different frequency points of the radio frequency signal also affect the output power of the PA, the nominal value of the output power of the PA corresponding to each output power level is more finely obtained for different environmental temperatures and different frequency points.

[0014] In a possible implementation, the maximum output power level of the RFIC is determined according to the nominal value of the output power of the PA, including: the maximum output power level of the RFIC under different environmental temperatures and different frequency points is determined according to the nominal value of the output power of the PA corresponding to each output power level under different environmental temperatures and different frequency points.

[0015] Since the environmental temperature and the different frequency points of the radio frequency signal also affect the output power of the PA, the maximum output power level of the RFIC is more finely determined for different environmental temperatures and different frequency points.

[0016] In a possible implementation, if the power detection of the radio frequency feedback channel is abnormal, and the output power of the PA detected by the radio frequency feedback channel is less than the nominal value of the output power of the PA corresponding to the current output power level, the output power level of the control RFIC is less than or equal to the maximum output power level, including: if the power detection of the radio frequency feedback channel is abnormal, and the output power of the PA detected by the radio frequency feedback channel is less than the nominal value of the output power of the PA corresponding to the current output power level, the output power level of the control RFIC is less than or equal to the maximum output power level under the current environmental temperature and frequency point.

[0017] Since the environmental temperature and the different frequency points of the radio frequency signal also affect the output power of the PA, the maximum output power level of the RFIC is more finely limited for different environmental temperatures and different frequency points.

[0018] In a possible implementation, the modem is further configured to update the output power of the PA detected by the radio frequency feedback channel according to a difference between the output power of the PA detected by the radio frequency feedback channel and the nominal value of the output power of the PA corresponding to the current output power level.

[0019] When the next round of power detection is performed, the output power of the PA detected by the radio frequency feedback channel has been corrected, and the power detection of the radio frequency feedback channel returns to normal.

[0020] In a second aspect, a power adjustment method is provided, which is applied to the radio frequency circuit as described in the first aspect and any implementation thereof. The method comprises: controlling a radio frequency integrated circuit (RFIC) to traverse each output power level and obtaining a nominal value of an output power of a power amplifier (PA) corresponding to each output power level, the output power level corresponding to the output power of the RFIC in one-to-one manner; determining a maximum output power level of the RFIC according to the nominal value of the output power of the PA, the nominal value of the output power of the PA corresponding to the maximum output power level being less than or equal to a threshold of the output power of the PA, the threshold of the output power of the PA being equal to a threshold of the input power of the PA plus a gain of the PA; detecting whether the power detection of the radio frequency feedback channel is normal; if the power detection of the radio frequency feedback channel is abnormal, and the output power of the PA detected by the radio frequency feedback channel is less than the nominal value of the output power of the PA corresponding to the current output power level, controlling the output power level of the RFIC to be less than or equal to the maximum output power level.

[0021] In a possible implementation, detecting whether the power detection of the radio frequency feedback channel is normal comprises: if an absolute value of a difference between the nominal value of the output power of the PA corresponding to the current output power level of the RFIC and the output power of the PA detected by the radio frequency feedback channel is greater than a preset power difference, detecting that the power detection of the radio frequency feedback channel is abnormal, otherwise, detecting that the power detection of the radio frequency feedback channel is normal.

[0022] In a possible implementation, controlling the RFIC to traverse each output power level and obtaining the nominal value of the output power of the PA corresponding to each output power level comprises: controlling the RFIC to traverse each output power level under different ambient temperatures and different frequency points, and obtaining the nominal value of the output power of the PA corresponding to each output power level under different ambient temperatures and different frequency points.

[0023] In a possible implementation, determining the maximum output power level of the RFIC according to the nominal value of the output power of the PA comprises: determining the maximum output power level of the RFIC under different ambient temperatures and different frequency points according to the nominal value of the output power of the PA corresponding to each output power level under different ambient temperatures and different frequency points.

[0024] In a possible implementation, if the power detection of the radio frequency feedback path is abnormal, and the output power of the PA detected by the radio frequency feedback path is less than the nominal value of the output power of the PA corresponding to the current output power level, the controlling the output power level of the RFIC to be less than or equal to the maximum output power level comprises: if the power detection of the radio frequency feedback path is abnormal, and the output power of the PA detected by the radio frequency feedback path is less than the nominal value of the output power of the PA corresponding to the current output power level, controlling the output power level of the RFIC to be less than or equal to the maximum output power level under the current ambient temperature and frequency point.

[0025] In a possible implementation, the method further includes: updating the output power of the PA detected by the radio frequency feedback path according to the difference between the output power of the PA detected by the radio frequency feedback path and the nominal value of the output power of the PA corresponding to the current output power level.

[0026] In a third aspect, an electronic device is provided, which includes an antenna and the radio frequency circuit as described in the first aspect and any one of the implementations of the first aspect, and the radio frequency circuit is connected to the antenna.

[0027] In a fourth aspect, a computer-readable storage medium is provided, which stores instructions, when the instructions are executed on an electronic device, causing the electronic device to perform the method as described in the second aspect and any one of the implementations of the second aspect.

[0028] In a fifth aspect, a computer program product is provided, which includes instructions, when the instructions are executed on the electronic device, causing the electronic device to perform the method as described in the second aspect and any one of the implementations of the second aspect.

[0029] The technical effects of the second aspect to the fifth aspect refer to the technical effects of the first aspect and any one of the implementations of the first aspect, which are not repeated here. BRIEF DESCRIPTION OF DRAWINGS

[0030] FIG. 1 is a schematic diagram of an appearance of an electronic device according to an embodiment of the present application;

[0031] FIG. 2 is a schematic diagram of a structure of an electronic device according to an embodiment of the present application;

[0032] FIG. 3 is a schematic diagram of a structure of a radio frequency circuit according to an embodiment of the present application;

[0033] FIG. 4 is a schematic diagram of a single-day number, an accumulated number, and an added number of electronic devices with problems according to an embodiment of the present application;

[0034] FIG. 5 is a schematic diagram of a flow of a power adjustment method according to an embodiment of the present application;

[0035] FIG. 6 is a flow diagram of another power adjustment method according to an embodiment of the present application. DETAILED DESCRIPTION

[0036] First, some concepts involved in the present application are described.

[0037] The terms "first", "second", and the like in embodiments involved in the present application are only used for the purpose of distinguishing the same type of features, and should not be understood as indicating relative importance, quantity, order, and the like.

[0038] The terms "exemplary" or "for example" and the like in embodiments involved in the present application are used to indicate that the embodiments or designs so described are examples, instances, or illustrations, and should not be interpreted as meaning that the embodiments or designs so described are preferred or superior to other embodiments or designs. Rather, the use of the terms "exemplary" or "for example" and the like is intended to present the relevant concept in a specific manner.

[0039] The terms "coupled" and "connected" in embodiments involved in the present application should be interpreted in a broad sense, for example, can refer to a direct physical connection, or an indirect connection through electronic devices, such as a connection through resistors, inductors, capacitors, or other electronic devices.

[0040] As shown in FIG. 1, an electronic device 101 according to an embodiment of the present application can be mobile or fixed. The electronic device can be deployed on land (for example, indoors or outdoors, handheld or vehicle-mounted, etc.), on water (for example, a ship, etc.), or in the air (for example, an airplane, a balloon, etc.). The electronic device can be referred to as a user equipment (UE), an access terminal, a terminal unit, a subscriber unit, a terminal station, a mobile station (MS), a mobile terminal, a terminal agent, or a terminal device, etc. For example, the electronic device can be a mobile phone, a tablet computer, a notebook computer, a smart bracelet, a smart screen, a smart watch, a headset, a smart speaker, a terminal in industrial control, a terminal in self driving, a terminal in remote medical, a terminal in smart grid, a terminal in transportation safety, a terminal in smart city, a terminal in smart home, etc. Embodiments of the present application do not limit the specific type and structure of the electronic device. A possible structure of the electronic device is described below.

[0041] As shown in FIG. 2, taking the mobile phone as an example, at the hardware level, the electronic device 101 can include a processor 210, an external memory interface 220, an internal memory 221, a universal serial bus (USB) interface 230, a power management module 240, a battery 241, a wireless charging coil 242, an antenna ANT1, an antenna ANT2, a mobile communication module 250, a wireless communication module 260, an audio module 270, a loudspeaker 270A, a receiver 270B, a microphone 270C, a headset interface 270D, a sensor module 280, a key 290, a motor 291, an indicator 292, a camera 293, a display screen 294, and a subscriber identification module (SIM) card interface 295, and the like. Optionally, in some embodiments, an audio digital signal processor (ADSP) 243 is further included.

[0042] It can be understood that the structure shown in the embodiments of the present application does not constitute a specific limitation on the electronic device 101. In other embodiments of the present application, the electronic device 101 can include more or fewer components than those shown, or combine certain components, or split certain components, or different arrangement of components. The components shown can be implemented in hardware, software, or a combination of software and hardware.

[0043] The processor 210 can include one or more processing units, for example: the processor 210 can be a field programmable gate array (FPGA), an application specific integrated circuit (ASIC), a system on chip (SoC), a central processing unit (CPU), an application processor (AP), a network processor (NP), a digital signal processor (DSP), a micro controller unit (MCU), a programmable logic device (PLD), a modem processor, a graphics processing unit (GPU), an image signal processor (ISP), a controller, a video codec, a baseband processor, and a neural-network processing unit (NPU), etc. Different processing units can be independent devices or integrated in one or more processors. For example, the processor 210 can be an application processor AP. Alternatively, the above processor 210 can be integrated in a system on chip (SoC). Alternatively, the above processor 210 can be integrated in an integrated circuit (IC) chip. The processor 210 can include an analog front end (AFE) and a micro-controller unit (MCU) in the IC chip.

[0044] The ADSP 243 can be coupled with the audio module 270 and the sensor module 280, and can be used to process audio signals and also process sensor data. The ADSP 243 can remain active while the processor is in a sleep state, thereby reducing power consumption of the electronic device.

[0045] It can be understood that the interface connection relationship between the modules shown in the embodiments of the present application is only illustrative and does not constitute a structural limitation of the electronic device 101. In some other embodiments of the present application, the electronic device 101 can also use different interface connection modes or combinations of multiple interface connection modes in the above embodiments.

[0046] The external memory interface 220 can be used to connect an external memory card, such as a micro SanDisk (Micro SD) card, to extend the storage capability of the electronic device 101. The external memory card communicates with the processor 210 through the external memory interface 220 to implement a data storage function. For example, files such as music and videos are saved in the external memory card.

[0047] The internal memory 221 can be used to store computer executable program code, which includes computer instructions. The processor 210 executes various functional applications and data processing of the electronic device 101 by running the computer instructions stored in the internal memory 221, such as the power adjustment method related to the embodiments of the present application. In addition, the internal memory 221 can include a high-speed random access memory, and can also include a non-volatile memory, such as at least one magnetic disk storage device, a flash memory device, a universal flash storage (UFS), and the like.

[0048] The memory related to the embodiments of the present application can be a volatile memory or a non-volatile memory, or can include both volatile and non-volatile memories. Among them, the non-volatile memory can be a read-only memory (ROM), a programmable ROM (PROM), an erasable PROM (EPROM), an electrically EPROM (EEPROM), or a flash memory. The volatile memory can be a random access memory (RAM) used as an external cache. By way of example and not limitation, many forms of RAM can be used, such as static RAM (SRAM), dynamic RAM (DRAM), synchronous DRAM (SDRAM), double data rate SDRAM (DDR SDRAM), enhanced SDRAM (ESDRAM), synchlink DRAM (SLDRAM), and direct rambus RAM (DR RAM). It should be noted that the memory of the system and method described herein is intended to include, but not limited to, these and any other suitable types of memory.

[0049] The electronic device 101 can implement audio functions through the audio module 270, the speaker 270A, the receiver 270B, the microphone 270C, the earphone jack 270D, and the application processor, etc. For example, music playback, recording, etc.

[0050] The audio module 270 is configured to convert digital audio information into an analog audio signal output, and to convert an analog audio input into a digital audio signal. In some embodiments, the audio module 270 can be disposed in the processor 210, or some of the functional modules of the audio module 270 can be disposed in the processor 210. The speaker 270A, also referred to as a "loudspeaker", is configured to convert an audio electrical signal into a sound signal. The receiver 270B, also referred to as a "earpiece", is configured to convert an audio electrical signal into a sound signal. The microphone 270C, also referred to as a "microphone", "sound transducer", is configured to convert a sound signal into an electrical signal. The electronic device 101 can be provided with at least one microphone 270C. The earphone jack 270D is configured to connect a wired earphone. The earphone jack 270D can be a USB interface 230, or a 3.5mm open mobile terminal platform (OMTP) standard interface, a cellular telecommunications industry association of the USA (CTIA) standard interface.

[0051] The keys 290 include a power key, a volume key, etc. The keys 290 can be mechanical keys. Alternatively, the keys 290 can be touch keys. The electronic device 101 can receive a key input, and generate a key signal input related to user settings and function control of the electronic device 101. The motor 291 can generate a vibration prompt. The motor 291 can be used for incoming call vibration prompts, and can also be used for touch vibration feedback. The indicator 292 can be an indicator light, and can be used to indicate a charging state, a power change, and can also be used to indicate a message, a missed call, a notification, etc. The SIM card interface 295 is configured to connect a SIM card. The SIM card can be inserted into or removed from the SIM card interface 295 to achieve contact and separation with the electronic device 101. The electronic device 101 can support one or N SIM card interfaces, where N is a positive integer greater than 1. The SIM card interface 295 can support a Nano SIM card, a Micro SIM card, a SIM card, etc. In some embodiments, the electronic device 101 uses an embedded SIM (eSIM) card, which can be embedded in the electronic device 101 and cannot be separated from the electronic device 101.

[0052] The electronic device 101 can implement a display function through a GPU, a display screen 294, and an application processor, etc. The GPU is a microprocessor for image processing, connecting the display screen 294 and the application processor. The GPU is used to perform mathematical and geometric calculations for graphics rendering. The processor 210 can include one or more GPUs that execute computer instructions to generate or change display information.

[0053] The sensor module 280 can include a pressure sensor, a gyro sensor, a barometric sensor, a magnetic sensor, an acceleration sensor, a distance sensor, a structured light sensor, a proximity light sensor, a fingerprint sensor, a temperature sensor, a touch sensor, an ambient light sensor, an angle sensor, etc.

[0054] The battery 241 can include one or more batteries to power the load.

[0055] The power management module 240 is used to receive charging input from a charger. The charger can be a wireless charger, such as a wireless charging base, other electronic devices 101 with reverse wireless charging function, etc. The power management module 240 can receive wireless charging input through the wireless charging coil 242 of the electronic device. The charger can also be a wired charger, for example, the power management module 240 can receive charging input of the wired charger through the USB interface 230. The power management module 240 is also called a charging chip.

[0056] The power management module 240 can supply power to the electronic device while charging the battery 241. The power management module 240 receives input from the battery 241 to power the processor 210, the internal memory 221, the external memory interface 220, the display screen 294, the camera 293, and the wireless communication module 260, etc. The power management module 240 can also be used to monitor parameters such as the capacity, voltage, battery cycle number, battery health state (leakage, impedance) of the battery 241. In some other embodiments, the power management module 240 can also be arranged in the processor 210.

[0057] The display screen 294 is used to display images, videos, etc. The display screen 294 includes a display panel. As shown in FIG. 1A, the plane on which the display screen 294 of the electronic device 101 is located is called the front face. In some embodiments, the electronic device 101 can include one or more display screens 294.

[0058] The camera 293 is configured to take still images or dynamic videos (which can be collectively referred to as images). In some embodiments, the electronic device 101 can include one or N cameras 293, where N is a positive integer greater than 1. The camera 293 generally includes a lens and a sensor, which can be a charge-coupled device (CCD) or a complementary metal-oxide-semiconductor (CMOS) or any other light sensor. During image capture, light reflected from an object is projected onto the sensor through the lens, and the sensor converts the received light signal into an electrical signal, which is sent to the processor 210 after ISP processing, and the processor 210 obtains an image frame. The camera 293 can include a front-facing camera 2931 as shown in FIG. 1A and a main camera 2932 as shown in FIG. IB. The front-facing camera refers to a camera 293 that is located on the same plane as the display 294 on the electronic device 101, and the main camera refers to a camera 293 that is located on a different plane from the display 294.

[0059] The processor 210 can also include a memory for storing computer instructions and data. In some embodiments, the memory in the processor 210 is a cache memory. The memory can store computer instructions or data that have just been used or are frequently used by the processor 210. If the processor 210 needs to use the computer instructions or data again, it can directly call them from the memory. This avoids repeated access and reduces the waiting time of the processor 210, thereby improving the efficiency of the system.

[0060] In some embodiments, the processor 210 can include one or more interfaces. The interfaces can include an inter-integrated circuit (I2C) interface, an inter-integrated circuit sound (I2S) interface, a pulse code modulation (PCM) interface, a universal asynchronous receiver / transmitter (UART) interface, a mobile industry processor interface (MIPI), a general-purpose input / output (GPIO) interface, a subscriber identity module (SIM) interface, and / or a USB interface, etc.

[0061] The wireless communication function of the electronic device 101 can be implemented through the antenna ANT1, the antenna ANT2, the mobile communication module 250, the wireless communication module 260, a modem processor, and a baseband processor, etc.

[0062] The antenna ANT1 and the antenna ANT2 are used to transmit and receive electromagnetic wave signals. Each antenna in the electronic device 101 can be used to cover a single or multiple communication bands. Different antennas can also be multiplexed to improve the utilization of the antennas. For example, the antenna ANT1 can be multiplexed as a diversity antenna for a wireless local area network. In some other embodiments, the antennas can be used in combination with a tuning switch.

[0063] The mobile communication module 250 can provide a solution for wireless communication including 2G / 3G / 4G / 5G, etc. applied to the electronic device 101. The wireless communication module 260 can provide a solution for wireless communication including a wireless local area network (WLAN) (such as a wireless fidelity (Wi-Fi) network), Bluetooth (BT), a global navigation satellite system (GNSS), satellite communication (such as satellite data communication and satellite voice communication), frequency modulation (FM), near field communication (NFC), infrared technology (IR), etc. applied to the electronic device 101. For example, the wireless communication module 260 can include a satellite communication chip, thereby implementing satellite communication. For another example, the antenna ANT1 of the electronic device 101 is coupled with the mobile communication module 250, and the antenna ANT2 is coupled with the wireless communication module 260, so that the electronic device 101 can communicate with a network and other devices through wireless communication technology.

[0064] The mobile communication module 250 can include a radio frequency circuit, as shown in FIG. 3, the radio frequency circuit 30 includes a modem 31, a radio frequency integrated circuit (RFIC) 32, a power amplifier (PA) 33, an antenna port 34, an analog digital converter (ADC) 35 and a radio frequency feedback path 36. The output end of the modem 31 is connected to the input end of the RFIC 32, and the modem 31 is also used to connect the processor described above, so as to communicate with the processor. The output end of the RFIC 32 is connected to the input end of the PA 33, and the output end of the PA 33 is connected to the antenna port 34, and the antenna port 34 is used to connect the antenna ANT1. The wire between the PA 33 and the antenna port 34 is electromagnetically coupled with the radio frequency feedback path 36, the first end of the radio frequency feedback path 36 is grounded, the second end of the radio frequency feedback path 36 is connected to the input end of the ADC 35, and the output end of the ADC 35 is connected to the input end of the modem 31.

[0065] The modem 31 controls the RFIC 32 to output a radio frequency signal, and the radio frequency signal is amplified in power by the PA 33 and then output to the antenna ANT1 through the antenna port 34 and emitted. The modem 31 adjusts the output power of the RFIC 32 by adjusting the output power level (for example, the relative gain index) of the RFIC 32, so as to adjust the output power of the RFIC 32, and then adjust the transmission power of the radio frequency signal output by the PA 33 to the antenna port 34. The transmission power is the transmission power of the radio frequency signal output by the electronic device, which is referred to as the output power of the PA 33 in this application. That is, the output power of the RFIC 32 is not continuously adjustable but discrete, and the output power of the RFIC 32 corresponds to the output power level of the RFIC 32 one by one.

[0066] The radio frequency feedback path 36 detects the output power of the PA 33 in real time through the electromagnetic coupling with the wire between the PA 33 and the antenna port 34, and outputs an analog feedback signal to the ADC 35. The size of the feedback signal is proportional to the output power of the PA 33 detected by the radio frequency feedback path 36. After the ADC 35 performs analog-to-digital conversion on the analog feedback signal, it outputs a digital feedback signal to the modem 31.

[0067] The modem 31 adjusts the output power level of the RFIC 32 according to the feedback signal, so as to adjust the output power of the RFIC 32 and the output power of the PA 33. For example, if the feedback signal indicates that the output power of the PA 33 is higher than the target output power, the modem 31 reduces the output power level of the RFIC 32, so as to reduce the output power of the RFIC 32 and the output power of the PA 33. If the feedback signal indicates that the output power of the PA 33 is lower than the target output power, the modem 31 increases the output power level of the RFIC 32, so as to increase the output power of the RFIC 32 and the output power of the PA 33. Through this negative feedback mechanism, the output power of the PA 33 can be stabilized at the target output power.

[0068] It should be noted that the radio frequency circuit 30 shown in FIG. 3 includes a single transmission path and a single radio frequency feedback path, that is, the RFIC 32 is connected to the antenna port 34 through a PA 33, and a radio frequency feedback path 36 is electromagnetically coupled to the wire between the PA 33 and the antenna port 34 of the transmission path, and the radio frequency feedback path 36 is connected to the modem 31 through an ADC 35. The radio frequency circuit 30 can also include multiple transmission paths and multiple radio frequency feedback paths, that is, the RFIC 32 is connected to multiple antenna ports 34 through multiple PAs 33, respectively, and each radio frequency feedback path 36 is electromagnetically coupled to the wire between the PA 33 and the antenna port 34 of each transmission path, and the radio frequency feedback path 36 is connected to the modem 31 through an ADC 35. Thus, the transmission power of the radio frequency signal output by each transmission path can be detected and fed back.

[0069] Due to the sudden change of the antenna impedance and other reasons, the output power of the PA 33 detected by the radio frequency feedback path 36 can be greatly different from the actual output power of the PA 33, that is, the power detection of the radio frequency feedback path is abnormal. If the output power of the PA 33 detected by the radio frequency feedback path 36 is lower than the actual output power of the PA 33, the feedback signal output by the radio frequency feedback path 36 to the modem 31 is also low, and the modem 31 will increase the output power level of the RFIC 32 according to the feedback signal, so as to increase the output power of the RFIC 32, which can make the input power of the PA 33 exceed the input power threshold of the PA 33, and correspondingly, the output power of the PA 33 can exceed the output power threshold of the PA 33, wherein the output power threshold of the PA is equal to the input power threshold of the PA 33 plus the gain of the PA 33.

[0070] Currently, there are many electronic devices that have the above-mentioned problem. For example, after detecting electronic devices in a plurality of preset cells for a plurality of days, the number of electronic devices having the problem in a single day, the cumulative number of electronic devices having the problem, and the number of newly added electronic devices having the problem are shown in FIG. 4. The number of electronic devices having the problem in a single day refers to the number of electronic devices having the problem in a single day of detection. The cumulative number of electronic devices having the problem refers to the sum of the number of electronic devices having the problem in a plurality of days of detection. The number of newly added electronic devices having the problem refers to the number of newly added electronic devices having the problem in a single day of detection, relative to the electronic devices having the problem that already exist.

[0071] In this case, in order to avoid the input power of the PA 33 exceeding the input power threshold of the PA 33, the modem 31 can control the output power level of the RFIC 32 to be at or below a fixed maximum output power level (i.e., a level threshold). However, for different electronic devices, there are hardware differences in the path from the RFIC 32 to the antenna port 34, so even if the RFIC 32 uses the same output power level, the input power of the PA 33 can be different, and the output power of the PA 33 can be different. For example, the input power of the PA 33 of some electronic devices is also very low, and the input power of the PA 33 of some electronic devices has already exceeded the input power threshold of the PA 33.

[0072] For example, Table 1 shows the output power of different electronic devices at each output power level of the RFIC 32. The modem can control the RFIC to traverse each output power level during the production line calibration phase, and obtain Table 1 by measuring the calibration value of the transmit power (i.e., the output power of the PA 33) of the electronic device corresponding to each output power level. If UE1 and UE2 use the same maximum output power level 49, the transmit power of UE1 is 24.3 dBm, which exceeds the output power threshold, and the transmit power of UE2 is 21.9 dBm, which is too low.

[0073] Table 1

[0074] To this end, the embodiment of the present application provides a power adjustment method. For a single electronic device, the RFIC is controlled to traverse each output power level, and the calibration value of the output power of the PA corresponding to each output power level is obtained, and the maximum output power level of the RFIC of the electronic device is set for the electronic device. When the power detection of the radio frequency feedback path is abnormal, the output power level of the RFIC controlled by the modem is less than or equal to the maximum output power level, so that the output power of the RFIC is limited, the input power of the PA does not exceed the input power threshold of the PA, and the PA can work normally. In particular for high frequency bands, the input power of the PA is larger, and it is more likely to reach the input power threshold, so the power adjustment method provided by the embodiment of the present application can be applied to high frequency bands (for example, 3.3GHz-4.2GHz). As shown in FIG. 5, the power adjustment method comprises:

[0075] S101, the modem controls the RFIC to traverse each output power level, and obtains the calibration value of the output power of the PA corresponding to each output power level.

[0076] In the production line calibration phase of each electronic device (for example, UE1 or UE2 described above), the antenna interface of the electronic device is connected to a power measuring device such as a power meter or a spectrum analyzer. The modem of the electronic device controls the RFIC of the electronic device to traverse each output power level (for example, from output power level 29 to output power level 51 in turn), and at each output power level, the output power of the antenna port is measured by the power measuring device as the calibration value of the output power of the PA corresponding to the output power level.

[0077] After traversing all the output power levels of the RFIC of the electronic device, all the output power levels of the RFIC and the corresponding calibration values of the output power of the PA are stored in the modem of the electronic device, which can be stored by means of a mapping table. The mapping table is a one-dimensional table, and the corresponding calibration value of the output power of the PA can be found by the output power level of the RFIC, or the corresponding output power level of the RFIC can be found by the calibration value of the output power of the PA.

[0078] For example, as shown in Table 1, all the calibration values of the electronic device can refer to the transmit power of UE1 or the transmit power of UE2. As can be seen, for the same output power level of the RFIC of different electronic devices, the calibration value of the output power of the PA can be different.

[0079] S102, the modem determines the maximum output power level of the RFIC according to the calibration value of the output power of the PA corresponding to each output power level.

[0080] The nominal value of the output power of the PA corresponding to the maximum output power level of the RFIC is less than or equal to the output power threshold of the PA, and the output power threshold of the PA is equal to the input power threshold of the PA plus the gain of the PA. As shown in Table 1, if 24 dBm is taken as the output power threshold of the PA, for UE1, because when the output power level of the RFIC of UE1 is 49, the transmit power of UE1 is 24.3 dBm, which is greater than 24 dBm, and when the output power level of the RFIC of UE1 is 48, the transmit power of UE1 is 23.3 dBm, which is less than 24 dBm, therefore, the maximum output power level of the RFIC of UE1 is 48. Similarly, for UE2, because when the output power level of the RFIC of UE2 is 51, the transmit power of UE2 is 23.9 dBm, which is less than 24 dBm, therefore, the maximum output power level of the RFIC of UE2 is 51.

[0081] In S103, the modem detects whether the power detection of the radio frequency feedback channel is normal.

[0082] When the radio frequency circuit has multiple transmission channels and multiple radio frequency feedback channels, the RFIC connects multiple antenna ports through multiple PAs, and each radio frequency feedback channel is electromagnetically coupled between the PA and the antenna port of one transmission channel, so as to realize the detection and feedback of the transmit power of the radio frequency signal output by each transmission channel. If the modem detects that the absolute value of the difference between the output power of the PA detected by one radio frequency feedback channel and the output power of the PA detected by other radio frequency feedback channels is greater than a preset power difference, the modem detects that the power detection of the radio frequency feedback channel is abnormal, otherwise, the modem detects that the power detection of the radio frequency feedback channel is normal.

[0083] If the absolute value of the difference between the nominal value of the output power of the PA corresponding to the current output power level of the RFIC and the output power of the PA detected by the modem through the radio frequency feedback channel is greater than a preset power difference, the modem detects that the power detection of the radio frequency feedback channel is abnormal, otherwise, the modem detects that the power detection of the radio frequency feedback channel is normal. The current output power level of the RFIC can be any output power level of the RFIC.

[0084] For example, as shown in Table 1, for UE2, it is assumed that the current output power level of the RFIC is 48, and the preset power difference is 3dB. The nominal value of the output power of the PA corresponding to the output power level 48 is 20.9dBm, and the output power of the PA detected by the radio frequency feedback channel is 15dBm. The difference between the nominal value of the output power of the PA corresponding to the output power level 48, i.e. 20.9dBm, and the output power of the PA detected by the radio frequency feedback channel, i.e. 15dBm, is 5.9dB, which is greater than the preset power difference 3dB. Therefore, the modulator detects that the power detection of the feedback channel of UE2 is abnormal. If the output power of the PA detected by the radio frequency feedback channel is 18dBm, the difference between the nominal value of the output power of the PA corresponding to the output power level, i.e. 20.9dBm, and the output power of the PA detected by the radio frequency feedback channel, i.e. 18dBm, is 2.9dB, which is less than the preset power difference 3dB. Therefore, the modulator detects that the power detection of the feedback channel of UE2 is normal.

[0085] S104, if the power detection of the radio frequency feedback channel is normal, the modulator adjusts the output power level of the RFIC according to the target output power and the output power of the PA detected by the radio frequency feedback channel.

[0086] For example, if the output power of the PA detected by the radio frequency feedback channel is higher than the target output power, the modulator reduces the output power level of the RFIC, so as to reduce the output power of the RFIC and the output power of the PA. If the output power of the PA detected by the radio frequency feedback channel is lower than the target output power, the modulator increases the output power level of the RFIC, so as to increase the output power of the RFIC and the output power of the PA. Through this negative feedback mechanism, the output power of the PA can be stabilized at the target output power.

[0087] S105, if the power detection of the radio frequency feedback channel is abnormal, and the output power of the PA detected by the radio frequency feedback channel is less than the nominal value of the output power of the PA corresponding to the current output power level, the modulator controls the output power level of the RFIC to be always less than or equal to the maximum output power level.

[0088] If the power detection of the radio frequency feedback channel is abnormal, and the output power of the PA detected by the radio frequency feedback channel is less than the nominal value of the output power of the PA corresponding to the current output power level, the output power of the PA detected by the radio frequency feedback channel is too low. Therefore, the modulator increases the output power level of the RFIC, and controls the output power level of the RFIC to be always less than or equal to the maximum output power level, so as to avoid that the output power of the RFIC is too high, and the input power of the PA exceeds the input power threshold of the PA.

[0089] For example, as shown in Table 1, for UE2, in step S103, the current output power level of the RFIC is 48, the nominal value of the output power of the PA corresponding to the output power level 48 is 20.9, the output power of the PA detected by the radio frequency feedback channel is 15 dBm, the power detection of the feedback channel of the UE2 is abnormal, and the output power of the PA detected by the radio frequency feedback channel is lower than the nominal value of the output power of the PA corresponding to the output power level 48, so the output power level of the RFIC is increased, and the output power level of the RFIC is always less than or equal to the maximum output power level 51 of the RFIC of UE1.

[0090] If the power detection of the radio frequency feedback channel is abnormal, and the output power of the PA detected by the radio frequency feedback channel is greater than or equal to the nominal value of the output power of the PA corresponding to the current output power level, the output power of the PA detected by the radio frequency feedback channel is too large, the output power level of the RFIC is reduced, and the maximum output power level of the RFIC does not need to be limited.

[0091] After step S104 or S105 is performed, step S103 can be re-executed. Through the above steps, the output power of the RFIC can be prevented from being too high, so that the input power of the PA is always below the input power threshold of the PA.

[0092] The power adjustment method provided in the embodiments of the present application can be used for a single electronic device. The electronic device controls the RFIC to traverse each output power level, and obtains the nominal value of the output power of the PA corresponding to each output power level, so that the maximum output power level of the RFIC is adaptively determined. When the power detection of the radio frequency feedback channel is abnormal, the output power level of the RFIC controlled by the modem is less than or equal to the maximum output power level, so that the output power of the RFIC is limited, the input power of the PA does not exceed the input power threshold of the PA, and the PA can work normally.

[0093] In addition, because the environmental temperature and different frequency points of the radio frequency signal also affect the output power of the PA, on the basis of the power adjustment method shown in FIG. 5, the maximum output power level of the RFIC can be further determined in combination with different frequency points and environmental temperatures, and the output power level of the RFIC can be limited. As shown in FIG. 6, another power adjustment method is provided in the embodiments of the present application, which includes the following steps.

[0094] S201, the modem controls the RFIC to traverse each output power level under different environmental temperatures and different frequency points, and obtains the nominal value of the output power of the PA corresponding to each output power level under different environmental temperatures and different frequency points.

[0095] In the production line calibration stage of each electronic device, the antenna interface of the electronic device is connected to a power measurement device such as a power meter or a spectrum analyzer. Under different ambient temperatures, the RFIC of the electronic device is controlled by the modem of the electronic device to traverse each output power level under different frequency points, and at each output power level, the output power of the antenna port is measured by the power measurement device as the calibration value of the output power of the PA corresponding to the output power level.

[0096] After traversing all the output power levels of the RFIC of the electronic device under different ambient temperatures and different frequency points, all the output power levels of the RFIC and the corresponding calibration values of the output power of the PA are stored in the modem of the electronic device, which can be stored in the form of a mapping table. The mapping table is a three-dimensional table, and the calibration value of the output power of the PA can be found by the ambient temperature, the frequency point, and the output power level of the RFIC.

[0097] Step S201 is a further development of step S101. The specific examples under each ambient temperature and frequency point are described with reference to step S101, which will not be repeated here.

[0098] S202, the modem determines the maximum output power level of the RFIC under different ambient temperatures and different frequency points according to the calibration values of the output power of the PA corresponding to each output power level under different ambient temperatures and different frequency points.

[0099] The calibration value of the output power of the PA corresponding to the maximum output power level of the RFIC under different ambient temperatures and different frequency points is less than or equal to the output power threshold of the PA, and the output power threshold of the PA is equal to the input power threshold of the PA plus the gain of the PA. Under each ambient temperature and frequency point, the maximum output power level of the RFIC is determined according to the calibration value of the output power of the PA corresponding to each output power level.

[0100] Step S202 is a further development of step S102. The specific examples under each ambient temperature and frequency point are described with reference to step S102, which will not be repeated here.

[0101] S203, the modem detects whether the power detection of the radio frequency feedback channel is normal.

[0102] If the absolute value of the difference between the output power of the PA corresponding to the current output power level of the RFIC and the output power of the PA detected by the modem through the radio frequency feedback channel is greater than a preset power difference at the current environmental temperature and frequency point, the modem detects that the power detection of the radio frequency feedback channel is abnormal, otherwise, the modem detects that the power detection of the radio frequency feedback channel is normal. The current output power level of the RFIC can be any output power level of the RFIC.

[0103] Step S203 is a further expansion of step S103. For specific examples at each environmental temperature and frequency point, refer to step S103, which will not be repeated here.

[0104] S204, if the power detection of the radio frequency feedback channel is normal, the modem adjusts the output power level of the RFIC according to the target output power and the output power of the PA detected by the radio frequency feedback channel.

[0105] Step S204 refers to step S104, which will not be repeated here.

[0106] S205, if the power detection of the radio frequency feedback channel is abnormal, and the output power of the PA detected by the radio frequency feedback channel is less than the output power of the PA corresponding to the current output power level, the modem controls the output power level of the RFIC to be less than or equal to the maximum output power level at the current environmental temperature and frequency point.

[0107] If the power detection of the radio frequency feedback channel is abnormal, and the output power of the PA detected by the radio frequency feedback channel is less than the output power of the PA corresponding to the current output power level, the output power of the PA detected by the radio frequency feedback channel is too small, so the modem will increase the output power level of the RFIC, and will control the output power level of the RFIC to be always less than or equal to the maximum output power level at the current environmental temperature and frequency point, to avoid the output power of the RFIC being too high, causing the input power of the PA to exceed the input power threshold of the PA.

[0108] Step S205 is a further expansion of step S105. For specific examples at each environmental temperature and frequency point, refer to step S105, which will not be repeated here.

[0109] S206, the modem updates the output power of the PA detected by the radio frequency feedback channel according to the difference between the output power of the PA detected by the radio frequency feedback channel and the output power of the PA corresponding to the current output power level.

[0110] Step S206 is optional, and step S206 can also be applied to the power adjustment method shown in FIG. 5. If the output power of the PA detected by the radio frequency feedback channel is greater than the nominal value of the output power of the PA corresponding to the current output power level, the output power of the PA detected by the radio frequency feedback channel is added by the difference. If the output power of the PA detected by the radio frequency feedback channel is less than the nominal value of the output power of the PA corresponding to the current output power level, the output power of the PA detected by the radio frequency feedback channel is subtracted by the difference. When the next round of power detection is performed, the output power of the PA detected by the radio frequency feedback channel has been corrected, and the power detection of the radio frequency feedback channel returns to normal.

[0111] After step S204 or S206 is performed, step S203 can be re-executed. The power adjustment method shown in FIG. 6 can more finely determine the maximum output power level of the RFIC and limit the output power level of the RFIC for different frequency points and ambient temperatures, compared with the power adjustment method shown in FIG. 5.

[0112] Embodiments of the present application also provide a computer readable storage medium including instructions, when the instructions are run on the electronic device, the electronic device executes each step in the above method embodiments, for example, executes the method shown in FIG. 5 and FIG. 6.

[0113] Embodiments of the present application also provide a computer program product including instructions, when the instructions are run on the electronic device, the electronic device executes each step in the above method embodiments, for example, executes the method shown in FIG. 5 and FIG. 6.

[0114] The technical effects of the chip system, the computer readable storage medium, and the computer program product are referred to the technical effects of the above method embodiments.

[0115] It should be understood that, in various embodiments of the present application, the size of the sequence number of each process does not mean the order of execution, the execution order of each process should be determined according to its function and inherent logic, and should not constitute any limitation on the implementation process of the embodiments of the present application.

[0116] In the above embodiments, all or part of the embodiments can be implemented by software, hardware, firmware or any combination thereof. When implemented by using a software program, all or part of the embodiments can be implemented in the form of a computer program product. The computer program product includes one or more computer instructions. When the computer program instructions are loaded and executed on a computer, all or part of the processes or functions described in the embodiments of the present application are generated. The computer can be a general purpose computer, a special purpose computer, a computer network, or other programmable apparatus. The computer instructions can be stored in a computer readable storage medium or transmitted from one computer readable storage medium to another computer readable storage medium, for example, the computer instructions can be transmitted from one website, computer, server or data center to another website, computer, server or data center through wired (such as coaxial cable, optical fiber, digital subscriber line (DSL)) or wireless (such as infrared, wireless, microwave, etc.) manner. The computer readable storage medium can be any available medium that can be accessed by a computer or data storage device including one or more servers, data centers, etc. integrated with the medium. The available medium can be a magnetic medium (such as a floppy disk, a hard disk, a magnetic tape), an optical medium (such as a DVD), or a semiconductor medium (such as a solid state disk (SSD)), etc.

[0117] The above description is merely a specific implementation of the present application, but the protection scope of the present application is not limited thereto. Any person skilled in the art can easily think of changes or replacements within the technical range disclosed in the present application, which should be covered within the protection scope of the present application. Therefore, the protection scope of the present application should be subject to the protection scope of the claims.

Claims

1. A radio frequency circuit, characterized in that: include: A modem, a radio frequency integrated circuit (RFIC), a power amplifier (PA), an antenna port, a radio frequency feedback path, and an analog-to-digital converter (ADC), wherein the output of the modem is connected to the input of the RFIC, the output of the RFIC is connected to the input of the PA, the output of the PA is connected to the antenna port, the wire between the PA and the antenna port is electromagnetically coupled to the radio frequency feedback path, the first end of the radio frequency feedback path is grounded, the second end of the radio frequency feedback path is connected to the input of the ADC, and the output of the ADC is connected to the input of the modem, for performing power detection on the output power of the PA; the modem is configured to: Controlling the RFIC to traverse various output power gears and obtaining calibration values ​​of the output powers of the PA corresponding to the various output power gears, wherein the output power gears correspond one-to-one to the output powers of the RFIC; Determining a maximum output power level of the RFIC according to a calibrated value of the output power of the PA, wherein the calibrated value of the output power of the PA corresponding to the maximum output power level is less than or equal to an output power threshold of the PA, and the output power threshold of the PA is equal to an input power threshold of the PA plus a gain of the PA; Detecting whether the power detection of the radio frequency feedback path is normal; If the power detection of the RF feedback path is abnormal, and the output power of the PA detected by the RF feedback path is less than the calibrated value of the output power of the PA corresponding to the current output power level, the output power level of the RFIC is controlled to be less than or equal to the maximum output power level.

2. The radio frequency circuit according to claim 1, wherein: The detecting whether the power detection of the radio frequency feedback path is normal includes: If the absolute value of the difference between the calibrated value of the PA's output power corresponding to the current output power gear of the RFIC and the output power of the PA detected by the RF feedback path is greater than the preset power difference, then the power detection of the RF feedback path is detected to be abnormal; otherwise, the power detection of the RF feedback path is detected to be normal.

3. The radio frequency circuit according to claim 1 or 2, characterized in that: The controlling the RFIC to traverse each output power gear and obtaining a calibration value of the output power of the PA corresponding to each output power gear, respectively, includes: The RFIC is controlled to traverse various output power gears under different ambient temperatures and different frequency points, and the calibration values ​​of the output power of the PA corresponding to the various output power gears under different ambient temperatures and different frequency points are obtained.

4. The radio frequency circuit according to claim 3, characterized in that: The determining the maximum output power level of the RFIC according to the calibrated value of the output power of the PA includes: The maximum output power level of the RFIC at different ambient temperatures and frequencies is determined according to the calibrated values ​​of the output power of the PA corresponding to each output power level at different ambient temperatures and frequencies.

5. The radio frequency circuit according to claim 4, characterized in that: If the power detection of the RF feedback path is abnormal, and the output power of the PA detected by the RF feedback path is less than the calibration value of the output power of the PA corresponding to the current output power gear, controlling the output power gear of the RFIC to be less than or equal to the maximum output power gear includes: If the power detection of the RF feedback path is abnormal, and the output power of the PA detected by the RF feedback path is less than the calibrated value of the output power of the PA corresponding to the current output power level, the output power level of the RFIC is controlled to be less than or equal to the maximum output power level under the current ambient temperature and frequency.

6. The radio frequency circuit according to any one of claims 1 to 5, characterized in that: The modem is also used to: The output power of the PA detected by the RF feedback path is updated according to the difference between the output power of the PA detected by the RF feedback path and the calibrated value of the output power of the PA corresponding to the current output power level.

7. A power regulation method, characterized in that: Applied to the radio frequency circuit according to any one of claims 1 to 6, the method comprising: Controlling the radio frequency integrated circuit RFIC to traverse each output power gear and obtaining a calibration value of the output power of the power amplifier PA corresponding to each output power gear, wherein the output power gear corresponds to the output power of the RFIC in a one-to-one manner; Determining a maximum output power level of the RFIC according to a calibrated value of the output power of the PA, wherein the calibrated value of the output power of the PA corresponding to the maximum output power level is less than or equal to an output power threshold of the PA, and the output power threshold of the PA is equal to an input power threshold of the PA plus a gain of the PA; Check whether the power detection of the RF feedback path is normal; If the power detection of the RF feedback path is abnormal, and the output power of the PA detected by the RF feedback path is less than the calibrated value of the output power of the PA corresponding to the current output power level, the output power level of the RFIC is controlled to be less than or equal to the maximum output power level.

8. The method according to claim 7, characterized in that The detecting whether the power detection of the radio frequency feedback path is normal includes: If the absolute value of the difference between the calibrated value of the PA's output power corresponding to the current output power gear of the RFIC and the output power of the PA detected by the RF feedback path is greater than the preset power difference, then the power detection of the RF feedback path is detected to be abnormal; otherwise, the power detection of the RF feedback path is detected to be normal.

9. The method according to claim 7 or 8, characterized in that The controlling the RFIC to traverse each output power gear and obtaining a calibration value of the output power of the PA corresponding to each output power gear, respectively, includes: The RFIC is controlled to traverse various output power gears under different ambient temperatures and different frequency points, and the calibration values ​​of the output power of the PA corresponding to the various output power gears under different ambient temperatures and different frequency points are obtained.

10. The method according to claim 9, characterized in that The determining the maximum output power level of the RFIC according to the calibrated value of the output power of the PA includes: The maximum output power level of the RFIC at different ambient temperatures and frequencies is determined according to the calibrated values ​​of the output power of the PA corresponding to each output power level at different ambient temperatures and frequencies.

11. The method according to claim 10, characterized in that If the power detection of the RF feedback path is abnormal, and the output power of the PA detected by the RF feedback path is less than the calibration value of the output power of the PA corresponding to the current output power gear, controlling the output power gear of the RFIC to be less than or equal to the maximum output power gear includes: If the power detection of the RF feedback path is abnormal, and the output power of the PA detected by the RF feedback path is less than the calibrated value of the output power of the PA corresponding to the current output power level, the output power level of the RFIC is controlled to be less than or equal to the maximum output power level under the current ambient temperature and frequency.

12. The method according to any one of claims 7 to 11, characterized in that: Also includes: The output power of the PA detected by the RF feedback path is updated according to the difference between the output power of the PA detected by the RF feedback path and the calibrated value of the output power of the PA corresponding to the current output power level.

13. An electronic device, characterized in that: The invention comprises an antenna and a radio frequency circuit according to any one of claims 1 to 6, wherein the radio frequency circuit is connected to the antenna.

14. A computer-readable storage medium, characterized in that Instructions are stored, and when the instructions are executed on an electronic device, the electronic device is caused to execute the method according to any one of claims 7 to 12.

15. A computer program product, characterized in that The method comprises instructions, which, when executed on an electronic device, cause the electronic device to execute the method according to any one of claims 7 to 12.

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