A radio frequency receiving path direct current tracking method, device and electronic equipment

Abstract

The application discloses a radio frequency receiving channel direct current tracking method and device and electronic equipment, and relates to the electronic field.The method comprises the following steps: acquiring a real-time baseband IQ digital-to-analog converter signal; performing rate-of-change detection on the real-time baseband IQ digital-to-analog converter signal to output a detection result, and performing noise detection and outputting a detection result; when the output results of the rate-of-change detection and the noise detection simultaneously indicate that the environment is stable, determining the difference between a preset RX direct current reference value and the real-time baseband IQ digital-to-analog converter signal, and adjusting the RX direct current reference value according to the difference; when the output results of the rate-of-change detection and the noise detection do not simultaneously indicate that the environment is stable, then suspending the updating operation on the RX direct current reference value.The application solves the technical problem that, in the prior art, due to voltage fluctuation, environmental temperature change and change of chip grounding resistance, direct current deviation fluctuation occurs, and a large deviation exists in the direct current reference value.

Description

Technical Field

[0001] This invention relates to the field of electronic technology, and in particular to a method, apparatus and electronic device for DC tracking of a radio frequency receiving path. Background Technology

[0002] In the RF receiver link, the receiving path can generate a DC component due to DC operating point deviation in the analog path or leakage of the LO signal from the substrate to the LNA input. This DC component is then generated through the LNA and MIXER paths and mixed with the signal itself. The DC deviation in the receiving path varies with the receiver gain; generally, the DC deviation is greatest when the receiver gain is at its maximum. Since the input dynamic range of the ADC in the receiving path is fixed, if the DC deviation is too large, the signal's peak-to-peak value may be within the ADC's input dynamic range, but the added DC deviation causes the signal to exceed the ADC's input dynamic range, resulting in clipping distortion. If the input signal is very small, comparable to the DC deviation, the receiver will be unable to distinguish between the DC and the signal, leading to a decrease in receiver sensitivity.

[0003] Therefore, DC deviation calibration of the receiver is essential in the RF receiving path. DC deviation calibration is typically performed during mass production testing, where the environment is controllable. The impact of air interference can be reduced by connecting a 50-ohm resistor to the LNA input. After calibration, the calibration value is recorded in non-volatile memory. When the chip powers on and the SDK runs, the RF calibration value is read from the non-volatile memory and configured for use in the RF path. Existing technologies innovate during mass production calibration; however, in actual wireless RF applications, the DC deviation of the receiving path fluctuates due to voltage fluctuations, changes in ambient temperature, and variations in chip grounding resistance. If the receiver does not track these fluctuations, even with precise DC deviation calibration during the RF calibration phase, performance degradation during actual wireless RF use is unavoidable. Summary of the Invention

[0004] This invention provides a DC tracking method, apparatus, and electronic device for a radio frequency receiving path, which can solve the technical problem in the prior art where DC deviation fluctuations caused by voltage fluctuations, changes in ambient temperature, and changes in chip grounding resistance lead to large deviations in the DC reference value. The technical solution is as follows:

[0005] In a first aspect, embodiments of the present invention provide a DC tracking method for a radio frequency receiving path, comprising:

[0006] Acquire real-time baseband IQ digital-to-analog converter signals;

[0007] The rate of change of the real-time baseband IQ digital-to-analog converter signal is detected and the detection result is output; noise is detected and the detection result is output.

[0008] When the output results of the rate of change detection and the noise detection simultaneously indicate that the environment is stable, the difference between the preset RX DC reference value and the real-time baseband IQ digital-to-analog converter signal is determined, and the RX DC reference value is adjusted according to the difference.

[0009] When the outputs of the rate of change detection and the noise detection differ and indicate that the environment is stable, the update operation of the RX DC reference value is paused.

[0010] In some embodiments of the present invention, after acquiring the real-time baseband IQ digital-to-analog converter signal, the method further includes:

[0011] The real-time baseband IQ digital-to-analog converter signal is filtered to obtain a filtered signal;

[0012] The filtered signal is subjected to rate of change detection and the detection result is output. Noise detection is also performed and the detection result is output.

[0013] In some embodiments of the present invention, the step of performing rate-of-change detection and outputting detection results on the real-time baseband IQ digital-to-analog converter signal, and performing noise detection and outputting detection results, includes:

[0014] The rate of change of adjacent data points of the filtered signal is calculated, and the rate of change detection result is determined based on the relationship between the rate of change and the rate of change threshold; the rate of change is used to indicate whether the data change is gradual.

[0015] The peak-to-peak value of the filtered signal of a set length is determined, and the noise detection output result is determined based on the relationship between the peak-to-peak value and the noise threshold; the noise detection is used to indicate whether noise interference exists.

[0016] In some embodiments of the present invention, calculating the rate of change of adjacent data points of the filtered signal includes:

[0017] Calculate the first-order difference value of adjacent data points of the filtered signal, and compare the difference value with the rate of change threshold.

[0018] In some embodiments of the present invention, when the output results of the rate of change detection and the noise detection simultaneously indicate that the environment is stable, determining the difference between a preset RX DC reference value and the real-time baseband IQ digital-to-analog converter signal includes:

[0019] When the rate of change is less than the rate of change threshold and the peak-to-peak value is less than the noise threshold, the output results of the rate of change detection and the noise detection simultaneously indicate that the environment is stable; the difference between the preset RX DC reference value and the real-time baseband IQ digital-to-analog converter signal is determined.

[0020] In some embodiments of the present invention, before adjusting the RX DC reference value according to the difference, the method further includes:

[0021] Count the number of consecutive times and / or the cumulative number of times the difference satisfies the update condition;

[0022] If the number of consecutive counts and / or cumulative counts reach the preset number of anti-shake counts, then the DC reference value is updated.

[0023] In some embodiments of the present invention, adjusting the RX DC reference value according to the difference further includes:

[0024] Set the DC reference value and adjust the step size;

[0025] Adjust the step size according to the DC reference value and update the RX DC reference value.

[0026] Secondly, the present invention also provides a DC tracking device for a radio frequency receiving path, comprising:

[0027] The acquisition module is used to acquire real-time baseband IQ digital-to-analog converter signals;

[0028] The detection module is used to detect the rate of change of the real-time baseband IQ digital-to-analog converter signal and output the detection result, as well as to detect noise and output the detection result.

[0029] The update module is used to determine the difference between a preset RX DC reference value and the real-time baseband IQ digital-to-analog converter signal when the output results of the rate of change detection and the noise detection simultaneously indicate that the environment is stable, and to adjust the RX DC reference value according to the difference.

[0030] The pause module is used to pause the update operation of the RX DC reference value when the output results of the rate of change detection and the noise detection are different and indicate that the environment is stable.

[0031] Thirdly, the present invention also provides an electronic device, comprising: a processor and a memory;

[0032] The memory stores a computer-readable program that can be executed by the processor;

[0033] When the processor executes the computer-readable program, it implements the steps in the DC tracking method for the radio frequency receiving path as described above.

[0034] Fourthly, the present invention also provides a computer-readable storage medium storing one or more programs that can be executed by one or more processors to implement the steps in the DC tracking method for the radio frequency receiving path as described above.

[0035] The beneficial effects of the technical solutions provided by some embodiments of the present invention include at least the following: First, acquiring the real-time baseband IQ digital-to-analog converter signal; then performing rate-of-change detection and outputting the detection result on the real-time baseband IQ digital-to-analog converter signal, and performing noise detection and outputting the detection result; when the output results of the rate-of-change detection and the noise detection simultaneously indicate that the environment is stable, determining the difference between the preset RX DC reference value and the real-time baseband IQ digital-to-analog converter signal, and adjusting the RX DC reference value according to the difference; when the output results of the rate-of-change detection and the noise detection do not indicate that the environment is stable, pausing the update operation of the RX DC reference value. By implementing rate-of-change detection and noise detection in parallel, and only starting the DC reference value update when both indicate that the environment is stable, the true DC drift and environmental interference are effectively distinguished, thereby enabling stable and reliable real-time DC tracking in complex actual working environments. This solves the problems of traditional calibration methods being unable to track dynamic drift and simple feedback loops being susceptible to interference and misadjustment, improving the working performance and reliability of the RF receiver in variable environments. Attached Figure Description

[0036] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0037] Figure 1 A system architecture diagram of an embodiment of the DC tracking method for radio frequency receiving path provided by the present invention;

[0038] Figure 2 A flowchart illustrating an embodiment of the DC tracking method for the radio frequency receiving path provided by the present invention;

[0039] Figure 3 A flowchart of an embodiment of the DC tracking method for the radio frequency receiving path provided by the present invention, in step S202;

[0040] Figure 4 A schematic diagram of DC tracking in the DC tracking method for the radio frequency receiving path provided by the present invention;

[0041] Figure 5This is a schematic diagram of an embodiment of the DC tracking device for the radio frequency receiving path provided by the present invention;

[0042] Figure 6 This is a schematic diagram of the operating environment of an embodiment of the electronic device provided by the present invention. Detailed Implementation

[0043] To make the objectives, technical solutions, and advantages of this application clearer, the embodiments of this application will be described in further detail below with reference to the accompanying drawings.

[0044] It should be noted that the DC tracking method for the radio frequency receiving path provided in this application is generally executed by the terminal equipment, and correspondingly, the DC tracking device for the radio frequency receiving path is generally installed in the terminal equipment.

[0045] Figure 1 An exemplary system architecture is shown that can be applied to the DC tracking method or device for the radio frequency receiving path in this application.

[0046] like Figure 1 As shown, the system architecture may include: terminal device 101 and server 102. Terminal device 101 and server 102 can communicate via a network, which serves as the medium for providing communication links between the various units. The network may include various types of wired or wireless communication links, such as: wired communication links including fiber optic cables, twisted-pair cables, or coaxial cables; and wireless communication links including Bluetooth communication links, Wi-Fi communication links, or microwave communication links.

[0047] It should be noted that the terminal device 101 and the server 102 can be either hardware or software. When the terminal device 101 and the server 102 are hardware, they can be implemented as a distributed server cluster consisting of multiple servers, or as a single server. When the terminal device 101 and the server 102 are software, they can be implemented as multiple software programs or software modules (for example, to provide distributed services), or as a single software program or software module; no specific limitations are made here.

[0048] The terminal device of this application can be equipped with various communication client applications, such as video recording applications, video playback applications, voice interaction applications, search applications, instant messaging tools, email clients, social platform software, etc.

[0049] A terminal device can be either hardware or software. When the terminal device is hardware, it can be various terminal devices with a display screen, including but not limited to smartphones, tablets, laptops, and desktop computers. When the terminal device is software, it can be installed on the terminal devices listed above. It can be implemented as multiple software programs or software modules (e.g., used to provide distributed services) or as a single software program or software module; no specific limitation is made here.

[0050] When the terminal device is hardware, it can also be equipped with a display device and a camera. The display device can be any device capable of displaying information, and the camera is used to capture video streams. For example, the display device can be a cathode ray tube display (CR), a light-emitting diode display (LED), an e-ink screen, a liquid crystal display (LCD), a plasma display panel (PDP), etc. Users can use the display device on the terminal device to view displayed text, images, videos, and other information.

[0051] It should be understood that Figure 1 The number of terminal devices, networks, and servers shown is for illustrative purposes only. Depending on implementation needs, there can be any number of terminal devices, networks, and servers.

[0052] The following will be combined with the appendix Figure 2 This application provides a detailed description of the DC tracking method for the radio frequency receiving path provided in the embodiments of this application. The DC tracking device for the radio frequency receiving path in the embodiments of this application can be... Figure 1 The terminal device shown.

[0053] Please see Figure 2 This is a flowchart illustrating a DC tracking method for a radio frequency receiving path, as provided in an embodiment of this application. Figure 2 As shown, the method described in this application embodiment may include the following steps:

[0054] S201, Obtain the real-time baseband IQ digital-to-analog converter signal;

[0055] Specifically, during the operation of the RF receiver, signals from the RF front end are continuously received. After down-conversion and other processing, baseband analog I and Q signals are obtained, which are then converted into digital signals by an IQ ADC, i.e., real-time baseband IQ ADC signals. The real-time baseband IQ ADC signals contain useful communication signals, noise, and DC offset components that need to be eliminated.

[0056] S202, Perform rate of change detection on the real-time baseband IQ digital-to-analog converter signal and output the detection result, and perform noise detection and output the detection result;

[0057] It should be noted that, for ease of subsequent detection, the ADC signal needs to be preprocessed to filter out high-frequency signal components. For some embodiments of this invention, please refer to... Figure 3 ,include:

[0058] S301. Filter the real-time baseband IQ digital-to-analog converter signal to obtain a filtered signal;

[0059] S302, Perform rate of change detection on the filtered signal and output the detection result, and perform noise detection and output the detection result.

[0060] In a preferred embodiment, a first-order infinite impulse response (IIR) low-pass filter is used to filter out high-frequency signals, thereby reducing processing delay while ensuring filtering effectiveness. The low-frequency characteristics of the filtered signal are more pronounced, which is beneficial for the extraction and judgment of the DC component.

[0061] S203. When the output results of the rate of change detection and the noise detection simultaneously indicate that the environment is stable, determine the difference between the preset RX DC reference value and the real-time baseband IQ digital-to-analog converter signal, and adjust the RX DC reference value according to the difference.

[0062] It should be noted that the RX DC reference value refers to a reference or target value used to compensate for the DC component in the RF receiving path. Its initial value comes from the calibration value measured during the mass production calibration process and stored in non-volatile memory. In this invention, the RX DC reference value is not fixed, but can be dynamically updated according to the monitoring results under the actual working environment, thereby achieving tracking.

[0063] Furthermore, such as Figure 4 As shown, this embodiment of the invention uses two independent detection mechanisms to comprehensively evaluate whether the current environment is suitable for DC tracking. Specifically, firstly, the rate of change of adjacent data points of the filtered signal is calculated, and the rate of change detection result is determined based on the relationship between the rate of change and a rate of change threshold; the rate of change is used to indicate whether the data change is gradual. Subsequently, the peak-to-peak value of the filtered signal of a set length is determined, and the noise detection output result is determined based on the relationship between the peak-to-peak value and a noise threshold; the noise detection is used to indicate whether noise interference exists.

[0064] In one specific embodiment, the rate of change detection involves calculating the rate of change between adjacent data points of the filtered signal. In a preferred embodiment, a first-order difference value is calculated. The rate of change is then compared with a preset rate of change threshold. If the rate of change is less than the threshold, it indicates that the signal change is gradual, and the output indicates "stable" (e.g., logic 0). If the rate of change is greater than or equal to the threshold, it indicates that the signal may have a sharp jump (e.g., the start / end of a data packet), and the output indicates "unstable" (e.g., logic 1).

[0065] In one specific embodiment, filtered signal data of a set time period is analyzed, and the difference between the maximum and minimum values ​​of the data is calculated to obtain the peak-to-peak value. The peak-to-peak value is compared with a preset noise threshold. If the peak-to-peak value is less than the threshold, it indicates that the noise interference in that time period is small, and the output indicates "no interference" (e.g., logic 0); if it is greater than or equal to the threshold, it indicates that there is significant noise interference, and the output indicates "interference present" (e.g., logic 1).

[0066] S204. When the output results of the rate of change detection and the noise detection are different and indicate that the environment is stable, the update operation of the RX DC reference value is suspended.

[0067] It should be noted that due to signal abrupt changes or strong noise interference, the environment is unsuitable for DC tracking. The system enters a frozen state, pausing all tracking update logic for a preset time period. After the timer expires, the process returns to step S201 to restart detection, effectively preventing erroneous DC compensation in interference environments. This method, through a mechanism of dual detection decision + condition update + freeze protection, ensures that DC tracking only occurs within a quiet and stable environmental window, thereby achieving robust tracking in complex real-world wireless environments.

[0068] In some embodiments of the present invention, before adjusting the RX DC reference value according to the difference, the method further includes:

[0069] Count the number of consecutive times and / or the cumulative number of times the difference satisfies the update condition;

[0070] If the number of consecutive counts and / or cumulative counts reach the preset number of anti-shake counts, then the DC reference value is updated.

[0071] In this embodiment, to prevent misadjustment caused by a single random fluctuation, a sway counter is set. The final baseline value update is triggered only when the difference calculated N times consecutively (or cumulatively N times) is in the same direction and meets the adjustment conditions. For example, if the sway counter is set to 3 times, an update is only performed after three consecutive determinations that the difference sign is the same and adjustment is required.

[0072] In some embodiments of the present invention, adjusting the RX DC reference value according to the difference further includes:

[0073] Set the DC reference value and adjust the step size;

[0074] Adjust the step size according to the DC reference value and update the RX DC reference value.

[0075] In this embodiment, to avoid system instability caused by excessively large single adjustment, an adjustment step size for RX DC tracking is set. By setting the step size, the step is increased or decreased according to the positive or negative sign of the difference, thereby realizing the tracking of the RX DC component. If no adjustment step is set, the current output value of the IIR filter is directly updated to the RX DC reference value.

[0076] The following are embodiments of the apparatus described in this application, which can be used to execute the embodiments of the method described in this application. For details not disclosed in the apparatus embodiments of this application, please refer to the embodiments of the method described in this application.

[0077] Please see Figure 5 This illustration shows a schematic diagram of a DC tracking device for a radio frequency receiving path provided in an exemplary embodiment of this application, hereinafter referred to as device 5. Device 5 can be implemented as all or part of a terminal device through software, hardware, or a combination of both. Device 5 includes:

[0078] The acquisition module 510 is used to acquire real-time baseband IQ digital-to-analog converter signals;

[0079] The detection module 520 is used to detect the rate of change of the real-time baseband IQ digital-to-analog converter signal and output the detection result, and to detect noise and output the detection result.

[0080] The update module 530 is used to determine the difference between a preset RX DC reference value and the real-time baseband IQ digital-to-analog converter signal when the output results of the rate of change detection and the noise detection simultaneously indicate that the environment is stable, and to adjust the RX DC reference value according to the difference.

[0081] The pause module 540 is used to pause the update operation of the RX DC reference value when the output results of the rate of change detection and the noise detection are different and indicate that the environment is stable.

[0082] This application also provides a computer storage medium that can store multiple instructions, which are adapted to be loaded and executed by a processor as described above. Figure 2 The method steps of the illustrated embodiment can be found in the following documentation for detailed execution. Figure 2 The specific details of the illustrated embodiments will not be elaborated here.

[0083] This application also provides a computer program product that stores at least one instruction, which is loaded and executed by the processor to implement the DC tracking method for the radio frequency receiving path as described in the above embodiments.

[0084] Please see Figure 6 This document provides a schematic diagram of the structure of a terminal device according to an embodiment of this application. Figure 6 As shown, the terminal device 600 may include: at least one processor 601, at least one network interface 604, user interface 603, memory 605, and at least one communication bus 602.

[0085] The communication bus 602 is used to enable communication between these components.

[0086] The user interface 603 may include a display screen and a camera. Optionally, the user interface 603 may also include a standard wired interface and a wireless interface.

[0087] The network interface 604 may optionally include a standard wired interface or a wireless interface (such as a Wi-Fi interface).

[0088] The processor 601 may include one or more processing cores. The processor 601 connects to various parts within the terminal device 600 using various interfaces and lines, and performs various functions and processes data of the terminal device 600 by running or executing instructions, programs, code sets, or instruction sets stored in the memory 605, and by calling data stored in the memory 605. Optionally, the processor 601 may be implemented using at least one hardware form of Digital Signal Processing (DSP), Field-Programmable Gate Array (FPGA), or Programmable Logic Array (PLA). The processor 601 may integrate one or a combination of several of the following: Central Processing Unit (CPU), Graphics Processing Unit (GPU), and modem. The CPU primarily handles the operating system, user interface, and applications; the GPU is responsible for rendering and drawing the content required for display on the screen; and the modem handles wireless communication. It is understood that the modem may also not be integrated into the processor 601 and may be implemented as a separate chip.

[0089] The memory 605 may include random access memory (RAM) or read-only memory. Optionally, the memory 605 may include a non-transitory computer-readable storage medium. The memory 605 may be used to store instructions, programs, code, code sets, or instruction sets. The memory 605 may include a program storage area and a data storage area, wherein the program storage area may store instructions for implementing an operating system, instructions for at least one function (such as touch function, sound playback function, image playback function, etc.), instructions for implementing the above-described method embodiments, etc.; the data storage area may store data involved in the above-described method embodiments, etc. Optionally, the memory 605 may also be at least one storage device located remotely from the aforementioned processor 601. Figure 6 As shown, the memory 605, which serves as a computer storage medium, may include an operating system, a network communication module, a user interface module, and application programs.

[0090] exist Figure 6 In the terminal device 600 shown, the user interface 603 is mainly used to provide an input interface for the user and to obtain the user's input data; while the processor 601 can be used to call the application program stored in the memory 605 and specifically execute, such as Figure 2 The method shown can be referred to for details. Figure 2 As shown, it will not be elaborated further here.

[0091] Those skilled in the art will understand that all or part of the processes in the above embodiments can be implemented by a computer program instructing related hardware. The program can be stored in a computer-readable storage medium, and when executed, it can include the processes of the embodiments of the above methods. The storage medium can be a magnetic disk, optical disk, read-only memory, or random access memory, etc.

[0092] The above description discloses only preferred embodiments of the present invention and should not be construed as limiting the scope of the present invention. Therefore, equivalent variations made in accordance with the claims of the present invention are still within the scope of the present invention.

Claims

1. A DC tracking method for a radio frequency receiving path, characterized in that, include: Acquire real-time baseband IQ digital-to-analog converter signals; The rate of change of the real-time baseband IQ digital-to-analog converter signal is detected and the detection result is output; noise is detected and the detection result is output. When the output results of the rate of change detection and the noise detection simultaneously indicate that the environment is stable, the difference between the preset RX DC reference value and the real-time baseband IQ digital-to-analog converter signal is determined, and the RX DC reference value is adjusted according to the difference. When the outputs of the rate of change detection and the noise detection differ and indicate that the environment is stable, the update operation of the RX DC reference value is paused.

2. The method of claim 1, wherein, After acquiring the real-time baseband IQ digital-to-analog converter signal, the process further includes: The real-time baseband IQ digital-to-analog converter signal is filtered to obtain a filtered signal; The filtered signal is subjected to rate of change detection and the detection result is output. Noise detection is also performed and the detection result is output.

3. The method of claim 2, wherein, The step of detecting the rate of change and outputting the detection result for the real-time baseband IQ digital-to-analog converter signal, and detecting noise and outputting the detection result, includes: The rate of change of adjacent data points of the filtered signal is calculated, and the rate of change detection result is determined based on the relationship between the rate of change and the rate of change threshold; the rate of change is used to indicate whether the data change is gradual. The peak-to-peak value of the filtered signal of a set length is determined, and the noise detection output result is determined based on the relationship between the peak-to-peak value and the noise threshold; the noise detection is used to indicate whether noise interference exists.

4. The method of claim 3, wherein, The calculation of the rate of change of adjacent data points of the filtered signal includes: Calculate the first-order difference value between adjacent data points of the filtered signal, and compare the difference value with the rate of change threshold.

5. The DC tracking method for the radio frequency receiving path according to claim 3, characterized in that, When the outputs of the rate of change detection and the noise detection simultaneously indicate that the environment is stable, determining the difference between the preset RX DC reference value and the real-time baseband IQ digital-to-analog converter signal includes: When the rate of change is less than the rate of change threshold and the peak-to-peak value is less than the noise threshold, the output results of the rate of change detection and the noise detection simultaneously indicate that the environment is stable; the difference between the preset RX DC reference value and the real-time baseband IQ digital-to-analog converter signal is determined.

6. The DC tracking method for the radio frequency receiving path according to claim 1, characterized in that, Before adjusting the RX DC reference value based on the difference, the method further includes: Count the number of consecutive times and / or the cumulative number of times the difference satisfies the update condition; If the number of consecutive counts and / or cumulative counts reach the preset number of anti-shake counts, then the DC reference value is updated.

7. The DC tracking method for the radio frequency receiving path according to claim 1, characterized in that, Adjusting the RX DC reference value based on the difference further includes: Set the DC reference value and adjust the step size; Adjust the step size according to the DC reference value and update the RX DC reference value.

8. A DC tracking device for a radio frequency receiving path, characterized in that, include: The acquisition module is used to acquire real-time baseband IQ digital-to-analog converter signals; The detection module is used to detect the rate of change of the real-time baseband IQ digital-to-analog converter signal and output the detection result, as well as to detect noise and output the detection result. The update module is used to determine the difference between a preset RX DC reference value and the real-time baseband IQ digital-to-analog converter signal when the output results of the rate of change detection and the noise detection simultaneously indicate that the environment is stable, and to adjust the RX DC reference value according to the difference. The pause module is used to pause the update operation of the RX DC reference value when the output results of the rate of change detection and the noise detection are different and indicate that the environment is stable.

9. An electronic device, characterized in that, include: Processor and memory; The memory stores a computer-readable program that can be executed by the processor; When the processor executes the computer-readable program, it implements the steps in the DC tracking method for the radio frequency receiving path as described in any one of claims 1-7.

10. A computer-readable storage medium, characterized in that, The computer-readable storage medium stores one or more programs, which can be executed by one or more processors to implement the steps in the DC tracking method for the radio frequency receiving path as described in any one of claims 1-7.

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