Power amplifier grid voltage temperature compensation method and system

Abstract

The invention relates to the technical field of power amplifier grid voltage temperature compensation, and provides a power amplifier grid voltage temperature compensation method and system, and the method comprises the following steps: collecting the original temperature data of a working environment of a power amplifier in real time; on the basis of the original temperature data, a compensation voltage value needed at the current temperature is calculated through a preset temperature and grid voltage drift temperature compensation calculation model; converting the compensation voltage value into an analog voltage signal, and outputting the analog voltage signal to the gate end of the power amplifier; monitoring the grid voltage of the compensated power amplifier, and obtaining a deviation signal of the compensation effect; and optimizing and updating parameters of the temperature compensation calculation model by adopting a self-adaptive algorithm according to the deviation signal. The temperature data of the working environment of the power amplifier are collected in real time, the compensation voltage value is calculated through the temperature compensation calculation model, model parameters are dynamically optimized through the self-adaptive algorithm, and real-time and high-precision compensation of grid voltage drift caused by temperature changes is achieved.

Description

Technical Field

[0001] The present invention relates to the technical field of power amplifier gate voltage temperature compensation, and in particular to a power amplifier gate voltage temperature compensation method and system. Background Art

[0002] With the rapid development of modern electronic devices, power amplifiers, as core components in radio frequency communication systems, have a direct impact on the stability and efficiency of the entire system. In the actual operation of the power amplifier, changes in ambient temperature can cause gate voltage drift, thereby affecting the linearity, gain and efficiency of the power amplifier. This temperature-induced gate voltage drift problem is particularly significant in high-frequency and high-power application scenarios, which may lead to device performance degradation or even failure.

[0003] In the prior art, a fixed temperature compensation circuit or a simple linear compensation method is usually used to solve the temperature drift problem. The traditional fixed compensation method cannot adapt to complex temperature change environments, especially in scenarios with large temperature fluctuations or rapid dynamic changes, the compensation effect is poor. Summary of the invention

[0004] In view of this, the present invention proposes a power amplifier gate voltage temperature compensation method and system, which solves the problem that the prior art cannot adapt to complex temperature change environments and has poor compensation effect in scenarios with large temperature fluctuations or rapid dynamic changes.

[0005] The technical solution of the present invention is implemented as follows: In a first aspect, the present invention provides a power amplifier gate voltage temperature compensation method, comprising the following steps:

[0006] Collect the original temperature data of the power amplifier working environment in real time;

[0007] Based on the original temperature data, a compensation voltage value required at the current temperature is calculated using a preset temperature and gate voltage drift temperature compensation calculation model;

[0008] Converting the compensation voltage value into an analog voltage signal and outputting it to the gate terminal of the power amplifier;

[0009] Monitor the gate voltage of the power amplifier after compensation to obtain a deviation signal of the compensation effect;

[0010] According to the deviation signal, an adaptive algorithm is used to optimize and update the parameters of the temperature compensation calculation model.

[0011] On the basis of the above technical solution, preferably, the real-time acquisition of the original temperature data of the working environment of the power amplifier specifically includes:

[0012] The temperature sensor is arranged near the power amplifier, and the ambient temperature data is collected by the temperature sensor;

[0013] The ambient temperature data is digitally filtered using a moving average filtering algorithm to obtain the original temperature data.

[0014] On the basis of the above technical solution, preferably, the method of calculating the required compensation voltage value at the current temperature based on the original temperature data and using a preset temperature compensation calculation model of the temperature and gate voltage drift specifically includes:

[0015] According to the original temperature data, the gate voltage drift value is calculated using the temperature compensation calculation model;

[0016] The actual gate voltage drift data of the power amplifier at different temperatures is obtained through experimental calibration, and the relationship between temperature and gate voltage drift is fitted using a multi-order polynomial fitting method to obtain the temperature compensation calculation model. The calculation formula of the temperature compensation calculation model is:

[0017]

[0018] in, is the gate voltage drift value, T is the original temperature data, b 0 , b 1 , b 2 , b 3 , ..., b n is the polynomial fitting coefficient, ΔT hist is the rate of change between real-time temperature and historical temperature, γ is the correction weight coefficient;

[0019] Calculating a compensation voltage value according to the original temperature data and the gate voltage drift value;

[0020] The calculation formula of the compensation voltage value is:

[0021]

[0022] in, is the compensation voltage value, Vbias target The target gate bias voltage required for the power amplifier to operate, is the gate voltage drift value, λ is the dynamic adjustment coefficient, T error is the accuracy error with respect to the monitored gate voltage target.

[0023] On the basis of the above technical solution, preferably, the converting the compensation voltage value into an analog voltage signal and outputting it to the gate terminal of the power amplifier specifically includes:

[0024] Converting the compensation voltage value into an analog voltage signal through a digital-to-analog converter;

[0025] The analog voltage signal is applied to the gate terminal of the power amplifier through the output regulation module.

[0026] On the basis of the above technical solution, preferably, the monitoring of the gate voltage of the power amplifier after compensation to obtain the deviation signal of the compensation effect specifically includes:

[0027] The gate voltage of the power amplifier is monitored in real time by a high-precision voltage acquisition module to obtain compensated gate voltage data. The high-precision voltage acquisition module adopts a 24-bit high-precision analog-to-digital converter with a sampling frequency of not less than 1kHz;

[0028] The compensation deviation signal is calculated by the difference between the gate voltage data and the target gate voltage value. The target gate voltage value is dynamically adjusted in real time according to the temperature compensation calculation model to obtain a deviation signal of the compensation effect.

[0029] On the basis of the above technical solution, preferably, the parameters of the temperature compensation calculation model are optimized and updated by using an adaptive algorithm according to the deviation signal, specifically including:

[0030] Based on the deviation signal of current temperature data and compensation effect, the fitting coefficient in the temperature compensation model is dynamically adjusted by using the recursive least square method combined with real-time monitoring data;

[0031] And the fitting coefficients are optimized through the objective function minimization strategy.

[0032] On the basis of the above technical solution, preferably, the calculation formula of the fitting coefficient in the dynamic adjustment temperature compensation model is:

[0033] b(t)=b(t-1)+K(t)*[ΔV(t)-h(T)*b(t-1)]-γ 1 *▽b(t);

[0034] Among them, b(t) is the fitting coefficient vector at time t, b(t-1) is the fitting coefficient vector at time t-1, K(t) is the gain vector, ΔV(t) is the actual offset voltage, h(T) is the characteristic vector composed of the current temperature data, γ 1 is the weight coefficient of the penalty term, and ▽b(t) is the gradient value of the fitting coefficient at time t.

[0035] In a second aspect, the present invention further provides a power amplifier gate voltage temperature compensation system, the system comprising:

[0036] Temperature sensor module, used to collect the original temperature data of the power amplifier working environment in real time;

[0037] A compensation voltage module is used to calculate the compensation voltage value required at the current temperature based on the original temperature data and using a preset temperature compensation calculation model of temperature and gate voltage drift;

[0038] A signal processing module, used for converting the compensation voltage value into an analog voltage signal, and outputting the analog voltage signal to the gate terminal of the power amplifier;

[0039] A deviation signal module is used to monitor the gate voltage of the power amplifier after compensation and obtain a deviation signal of the compensation effect;

[0040] The gate voltage control module is used to optimize and update the parameters of the temperature compensation calculation model using an adaptive algorithm according to the deviation signal.

[0041] In a third aspect, the present invention further provides an electronic device, comprising: at least one processor, at least one memory, a communication interface and a bus;

[0042] The processor, memory and communication interface communicate with each other via the bus, the memory stores program instructions executable by the processor, and the processor calls the program instructions to implement steps of a power amplifier gate voltage temperature compensation method.

[0043] In a fourth aspect, the present invention further provides a computer-readable storage medium, wherein the computer-readable storage medium stores computer instructions, and the computer instructions enable a computer to implement steps such as a power amplifier gate voltage temperature compensation method.

[0044] The power amplifier gate voltage temperature compensation method and system of the present invention have the following beneficial effects compared with the prior art:

[0045] (1) By collecting the temperature data of the power amplifier working environment in real time, using the temperature compensation calculation model to calculate the compensation voltage value, and dynamically optimizing the model parameters through an adaptive algorithm, real-time and high-precision compensation for the gate voltage drift caused by temperature changes is achieved, thereby effectively improving the performance and stability of the power amplifier;

[0046] (2) A temperature compensation calculation model for temperature and gate voltage drift is established by adopting a multi-order polynomial fitting method, and the temperature change rate and dynamic adjustment coefficient are introduced for compensation correction, thereby achieving accurate compensation of the power amplifier gate voltage, so that the compensation voltage calculation accuracy can reach ±1mV, significantly improving the working stability of the power amplifier in a wide temperature range;

[0047] (3) By introducing a dynamic coefficient adjustment formula with a penalty term and combining it with the real-time calculation of the gain vector and gradient value, the precise optimization of the fitting coefficient of the temperature compensation calculation model is achieved, so that the fitting coefficient can be adjusted adaptively, effectively improving the dynamic accuracy and stability of the gate voltage compensation. BRIEF DESCRIPTION OF THE DRAWINGS

[0048] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0049] Figure 1 A flow chart of a power amplifier gate voltage temperature compensation method of the present invention;

[0050] Figure 2 The present invention is a structural diagram of a power amplifier gate voltage temperature compensation system. DETAILED DESCRIPTION

[0051] The following will be combined with the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0052] See also Figure 1 The present invention provides a power amplifier gate voltage temperature compensation method, comprising the following steps:

[0053] Collect the original temperature data of the power amplifier working environment in real time;

[0054] Based on the original temperature data, a compensation voltage value required at the current temperature is calculated using a preset temperature and gate voltage drift temperature compensation calculation model, wherein the temperature compensation calculation model is obtained by a polynomial fitting method;

[0055] Converting the compensation voltage value into an analog voltage signal and outputting it to the gate terminal of the power amplifier;

[0056] Monitor the gate voltage of the power amplifier after compensation to obtain a deviation signal of the compensation effect;

[0057] According to the deviation signal, an adaptive algorithm is used to optimize and update the parameters of the temperature compensation calculation model.

[0058] Specifically, this embodiment collects the temperature data of the power amplifier's working environment in real time, calculates the compensation voltage value using a temperature compensation calculation model, and dynamically optimizes the model parameters through an adaptive algorithm, thereby achieving real-time, high-precision compensation for the gate voltage drift caused by temperature changes, thereby effectively improving the performance and stability of the power amplifier.

[0059] The real-time acquisition of the original temperature data of the working environment of the power amplifier specifically includes:

[0060] The temperature sensor is arranged near the power amplifier, and the ambient temperature data is collected by the temperature sensor;

[0061] The sampling frequency of the high-precision temperature sensor is not less than 200 Hz, and a 16-bit analog-to-digital converter is used to sample the temperature signal;

[0062] The ambient temperature data is digitally filtered using a moving average filtering algorithm to eliminate the influence of ambient noise on temperature sampling, thereby obtaining the original temperature data.

[0063] In a specific embodiment, temperature acquisition includes the following steps:

[0064] Temperature sensor layout: Use PT100 platinum resistance temperature sensor with a temperature measurement range of -50℃ to 150℃; fix the sensor on the surface of the power amplifier radiator, no more than 10mm away from the power amplifier chip; use thermal conductive silicone to ensure close contact between the sensor and the radiator surface to improve temperature measurement accuracy.

[0065] Temperature signal acquisition: A 16-bit ADC (such as AD7606) is used to sample the temperature signal; the sampling frequency is set to 1kHz to meet the minimum requirement of 200Hz; a 2.5V high-precision reference source is used as the ADC reference voltage to improve sampling accuracy.

[0066] Digital filtering processing: using 8-point moving average filtering algorithm; filtering calculation formula: T(n) = [T(n) + T(n-1) + ... + T(n-7)] / 8; updating the filtering window data in real time after each sampling is completed.

[0067] Specifically, this embodiment ensures the accuracy of temperature acquisition through high-precision temperature sensors and reasonable installation positions, uses a 16-bit ADC to provide 65536 quantization levels, and can achieve a temperature resolution of 0.01°C. The moving average filter effectively suppresses environmental noise interference and improves temperature measurement stability.

[0068] The sampling frequency of 1kHz is much higher than the minimum requirement of 200Hz, ensuring that the rapid temperature changes of the power amplifier under working condition can be captured in time; the 8-point moving average filter has a small time delay while ensuring the filtering effect.

[0069] The method of calculating the required compensation voltage value at the current temperature based on the original temperature data and using a preset temperature compensation calculation model of the temperature and gate voltage drift specifically includes:

[0070] According to the original temperature data, the gate voltage drift value is calculated using the temperature compensation calculation model;

[0071] The actual gate voltage drift data of the power amplifier at different temperatures is obtained through experimental calibration, and the relationship between temperature and gate voltage drift is fitted using a multi-order polynomial fitting method to obtain the temperature compensation calculation model. The calculation formula of the temperature compensation calculation model is:

[0072]

[0073] in, is the gate voltage drift value, T is the original temperature data, b 0 、b 1 、b 2 、b 3 , …, b n is the polynomial fitting coefficient, ΔT hist is the rate of change between real-time temperature and historical temperature, γ is the correction weight coefficient;

[0074] Calculating a compensation voltage value according to the original temperature data and the gate voltage drift value to achieve gate voltage correction of the power amplifier;

[0075] The calculation formula of the compensation voltage value is:

[0076]

[0077] in, is the compensation voltage value, Vbias target The target gate bias voltage required for the power amplifier to operate, is the gate voltage drift value, λ is the dynamic adjustment coefficient, T error is the accuracy error with respect to the monitored gate voltage target.

[0078] In a specific embodiment, an experimental calibration is first performed: a set of data is recorded every 5°C in the temperature range of -40°C to 85°C; a high and low temperature test box is used to control the ambient temperature; a high-precision voltmeter is used to record the actual drift value of the gate voltage at different temperature points; and no less than 30 sets of temperature-drift data pairs are collected. Then a fourth-order polynomial is used for fitting. Finally, the compensation voltage value is calculated.

[0079] Specifically, the fourth-order polynomial of this embodiment can accurately describe the nonlinear relationship between temperature and gate voltage drift. The experimental calibration data points are dense, which ensures the accuracy of the fitting model. The fitting accuracy is better than ±0.5%, which meets the actual application requirements.

[0080] By introducing the temperature change rate term, the model's ability to respond to dynamic temperature changes is improved. The dynamic adjustment coefficient can be adaptively adjusted according to the actual working status, and the response time to sudden temperature changes is <100ms.

[0081] Closed-loop correction is achieved through the precision error term. The calculation of the compensation voltage takes multiple influencing factors into consideration, and the final gate voltage control accuracy can reach ±1mV.

[0082] The temperature compensation calculation model has a strong adaptability to the temperature range (-40℃ to 85℃), can adapt to the characteristics of different types of power amplifiers, and the compensation effect is stable and reliable.

[0083] The step of converting the compensation voltage value into an analog voltage signal and outputting the analog voltage signal to a gate terminal of the power amplifier specifically includes:

[0084] Converting the compensation voltage value into an analog voltage signal through a digital-to-analog converter;

[0085] A 16-bit or higher resolution DAC is used to perform digital-to-analog conversion on the compensation voltage value to ensure high accuracy of the output voltage;

[0086] At the same time, a filtering circuit is added at the DAC output to further reduce the impact of high-frequency noise generated during the digital-to-analog conversion process on the compensation voltage;

[0087] Applying the analog voltage signal to the gate terminal of the power amplifier through an output regulation module;

[0088] The analog signal output from the DAC is amplified and adjusted by a precision amplifier to ensure that the voltage accuracy applied to the gate of the power amplifier reaches ±1mV;

[0089] At the same time, a closed-loop calibration circuit is used to monitor the output voltage in real time and dynamically correct the output deviation to improve the stability and reliability of the output regulation module.

[0090] In a specific embodiment, digital-to-analog conversion is first performed: an AD5766 18-bit DAC chip is used; a 5V high-precision reference source is used as the DAC reference voltage; the DAC output range is 0 to 5V; and the conversion rate is 1MSPS.

[0091] Secondly, the filter circuit is designed: a second-order active low-pass filter is used; the cut-off frequency is set to 10kHz; the AD8676 low-noise precision operational amplifier is selected; the RC filter network parameters are: R = 1.6kΩ, C = 10nF.

[0092] Finally, the signal is processed through the output adjustment module: the AD8429 instrument amplifier is used for signal conditioning; the gain adjustable range is: 1 to 10 times; the output voltage accuracy is: ±1mV; the closed-loop calibration circuit sampling frequency is: 10kHz.

[0093] Specifically, this embodiment provides 262144 quantization levels through an 18-bit DAC; the voltage resolution reaches 19μV; the output voltage accuracy is better than ±1mV; and the long-term stability is <50ppm / ℃. High-frequency noise can be effectively suppressed by second-order low-pass filtering; the low noise characteristics of the op amp; the system output noise is less than 100μVrms; the signal-to-noise ratio is >80dB. The DAC conversion rate of this embodiment meets the real-time requirements; the system settling time is <10μs; the closed-loop calibration response time is <100μs; and the output ripple is <±0.5mV.

[0094] The monitoring of the gate voltage of the power amplifier after compensation to obtain a deviation signal of the compensation effect specifically includes:

[0095] The gate voltage of the power amplifier is monitored in real time through a high-precision voltage acquisition module to obtain compensated gate voltage data. The high-precision voltage acquisition module uses a 24-bit high-precision analog-to-digital converter with a sampling frequency of not less than 1kHz to ensure the accuracy and real-time performance of the collected data;

[0096] The compensation deviation signal is calculated by the difference between the gate voltage data and the target gate voltage value. The target gate voltage value is dynamically adjusted in real time according to the temperature compensation calculation model to obtain a deviation signal of the compensation effect.

[0097] In a specific embodiment, the high-precision voltage acquisition module uses an ADS1259 24-bit ADC; the sampling frequency is set to 2kHz (higher than the minimum requirement of 1kHz); the input range is ±5V; and the differential input method is used to reduce common-mode interference. Further, the acquisition circuit is designed, and the front stage uses an OP07 ultra-low bias voltage operational amplifier; the input impedance is >10MΩ; the common-mode rejection ratio is >120dB; and a four-wire Kelvin connection method is used. Finally. The deviation signal is calculated to obtain an analog voltage signal.

[0098] Specifically, this embodiment provides 16.7 million quantization levels through a 24-bit ADC; the voltage measurement resolution reaches 0.6μV; the measurement accuracy is better than ±0.1mV; the temperature drift characteristic is <1ppm / ℃. The dynamic monitoring requirements are met through a 2kHz sampling frequency; the system delay is <500μs; the data update rate is >1000 times / second; and the rapid voltage changes can be captured in time. The common-mode noise is effectively suppressed through differential input; the high common-mode rejection ratio reduces external interference; the four-wire connection eliminates the influence of wire voltage drop; the system noise level is <50μVpp.

[0099] The step of optimizing and updating the parameters of the temperature compensation calculation model using an adaptive algorithm according to the deviation signal specifically includes:

[0100] Based on the deviation signal of the current temperature data and the compensation effect, the fitting coefficients in the temperature compensation model are dynamically adjusted by using the recursive least squares method combined with real-time monitoring data, including the correction of polynomial coefficients;

[0101] The fitting coefficients are optimized through the objective function minimization strategy to improve the accuracy of the temperature and gate voltage drift model.

[0102] In a specific embodiment, the least squares algorithm is first used; the forgetting factor is set to 0.98; the initial covariance matrix P(0) is set to 100*I (I is the unit matrix); the fitting coefficient is updated every 100ms. Secondly, the objective function is optimized. Finally, the gradient descent method is used to optimize the fitting coefficient; the learning rate η is dynamically adjusted in the range of 0.001 to 0.1; the maximum step size of each iteration is limited to 0.05; and the convergence threshold is set to 0.001.

[0103] Specifically, this embodiment can quickly adapt to temperature changes; the fitting coefficient convergence time is <1s; the model prediction error is reduced by 80%; the compensation accuracy is improved to ±0.5mV. Single iteration time is <1ms; CPU occupancy rate is <5%; memory occupancy is <1MB. This embodiment can avoid coefficient oscillation, has a smooth convergence process, good long-term stability, strong anti-interference ability, can adapt to different types of power amplifiers, has good temperature range adaptability, and fast dynamic response.

[0104] The calculation formula of the fitting coefficient in the dynamic adjustment temperature compensation model is:

[0105] b(t)=b(t-1)+K(t)*[ΔV(t)-h(T)*b(t-1)]-γ 1 *▽b(t);

[0106] Among them, b(t) is the fitting coefficient vector at time t, b(t-1) is the fitting coefficient vector at time t-1, K(t) is the gain vector, ΔV(t) is the actual offset voltage, h(T) is the characteristic vector composed of the current temperature data, γ 1 is the weight coefficient of the penalty term, and ▽b(t) is the gradient value of the fitting coefficient at time t.

[0107] Specifically, this embodiment effectively suppresses coefficient overfitting by introducing a penalty weight coefficient, and uses the gradient value for dynamic correction to make the compensation more accurate. The final compensation accuracy of the system can reach ±0.2mV, and the temperature tracking error is controlled within 0.1°C.

[0108] The response time of this embodiment to temperature changes is <10ms, the fitting coefficient converges quickly, usually completed within 50-100ms, the overshoot is controlled within 5%, and the system steady-state error is <0.1mV.

[0109] The dynamic adjustment of the gain vector ensures the stability of the system, and the accurate description of the temperature characteristics is achieved through the characteristic vector. It has good anti-interference ability and very small drift in long-term operation.

[0110] This embodiment can automatically adapt to different operating temperature ranges, has good tracking capability for sudden temperature changes, can adapt to the characteristics of different types of power amplifiers, and automatically optimizes compensation parameters without manual intervention.

[0111] See also Figure 2 The present invention also provides a power amplifier gate voltage temperature compensation system, the system comprising:

[0112] Temperature sensor module, used to collect the original temperature data of the power amplifier working environment in real time;

[0113] A compensation voltage module, used to calculate the compensation voltage value required at the current temperature based on the original temperature data and using a preset temperature compensation calculation model of temperature and gate voltage drift;

[0114] A signal processing module, used for converting the compensation voltage value into an analog voltage signal, and outputting the analog voltage signal to the gate terminal of the power amplifier;

[0115] A deviation signal module is used to monitor the gate voltage of the power amplifier after compensation and obtain a deviation signal of the compensation effect;

[0116] The gate voltage control module is used to optimize and update the parameters of the temperature compensation calculation model using an adaptive algorithm according to the deviation signal.

[0117] Specifically, the temperature sensing module of this embodiment can collect the original temperature data of the working environment of the power amplifier in real time, with a sampling frequency of not less than 200 Hz, and is combined with a 16-bit analog-to-digital converter and a moving average filtering algorithm to effectively eliminate the interference of environmental noise.

[0118] The temperature acquisition accuracy is high, and the temperature resolution reaches 0.01°C, providing reliable basic data for subsequent compensation calculations.

[0119] The system can adapt to a wide temperature range (such as -40℃ to 85℃), ensuring the stable operation of the power amplifier in different environments.

[0120] The compensation voltage module is based on the temperature compensation calculation model of temperature and gate voltage drift. Through the polynomial fitting method, it can accurately calculate the required compensation voltage value at the current temperature.

[0121] Through experimental calibration and multi-order polynomial fitting, the temperature compensation model can accurately describe the nonlinear relationship between temperature and gate voltage drift, and the fitting error is less than ±0.5%.

[0122] The dynamic adjustment coefficient and precision error correction mechanism further improve the calculation accuracy of the compensation voltage, and the error of the final compensation voltage is controlled within ±0.2mV.

[0123] The signal processing module uses a 16-bit or higher resolution DAC for digital-to-analog conversion, ensuring high accuracy of the compensation voltage output.

[0124] Adding a filter circuit at the DAC output effectively suppresses the influence of high-frequency noise on the compensation voltage, and the ripple of the output signal is less than ±0.5mV.

[0125] The analog signal is amplified and adjusted by a precision amplifier to ensure that the voltage applied to the gate of the power amplifier has an accuracy of ±1mV.

[0126] The closed-loop calibration circuit monitors the output voltage in real time and dynamically corrects the deviation, further improving the stability and reliability of the output voltage.

[0127] The deviation signal module monitors the gate voltage of the power amplifier in real time through a high-precision voltage acquisition module (24-bit ADC, sampling frequency ≥ 1kHz) to ensure the accuracy and real-time performance of the collected data.

[0128] The deviation signal of the compensation effect is calculated through the difference between the gate voltage data and the target gate voltage value, providing accurate feedback information for subsequent model optimization.

[0129] Real-time monitoring and calculation of the deviation signal ensures that the system can respond quickly to dynamic changes in the power amplifier gate voltage.

[0130] The gate voltage control module uses the recursive least squares method combined with real-time monitoring data to dynamically adjust the fitting coefficients of the temperature compensation calculation model.

[0131] The fitting coefficients were optimized by minimizing the objective function, which significantly improved the accuracy of the temperature and gate voltage drift model.

[0132] The system can quickly adjust the compensation model parameters based on the deviation signal and real-time temperature data to adapt to different power amplifiers and environmental changes. The optimized model error is less than ±0.1mV.

[0133] The present invention also discloses an electronic device, comprising: at least one processor, at least one memory communication interface and a bus: wherein the processor, memory and communication interface communicate with each other through the bus; the memory stores program instructions that can be executed by the processor, and the processor calls the program instructions to implement a power amplifier gate voltage temperature compensation method.

[0134] The present invention also discloses a computer-readable storage medium, wherein the computer-readable storage medium stores computer instructions, wherein the computer instructions enable the computer to implement all or part of the steps of a power amplifier gate voltage temperature compensation method described in an embodiment of the present invention. The storage medium includes: a U disk, a mobile hard disk, a read-only memory ROM, a random access memory RAM, a magnetic disk or an optical disk, and other media that can store program codes.

[0135] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A power amplifier gate voltage temperature compensation method, characterized in that: The following steps are involved: Collect the original temperature data of the power amplifier working environment in real time; Based on the original temperature data, a compensation voltage value required at the current temperature is calculated using a preset temperature and gate voltage drift temperature compensation calculation model; Converting the compensation voltage value into an analog voltage signal and outputting it to the gate terminal of the power amplifier; Monitor the gate voltage of the power amplifier after compensation to obtain a deviation signal of the compensation effect; According to the deviation signal, an adaptive algorithm is used to optimize and update the parameters of the temperature compensation calculation model.

2. A power amplifier gate voltage temperature compensation method as claimed in claim 1, characterized in that: The real-time acquisition of the original temperature data of the working environment of the power amplifier specifically includes: The temperature sensor is arranged near the power amplifier, and the ambient temperature data is collected by the temperature sensor; The ambient temperature data is digitally filtered using a moving average filtering algorithm to obtain the original temperature data.

3. A power amplifier gate voltage temperature compensation method as claimed in claim 1, characterized in that: The method of calculating the required compensation voltage value at the current temperature based on the original temperature data and using a preset temperature compensation calculation model of the temperature and gate voltage drift specifically includes: According to the original temperature data, the gate voltage drift value is calculated using the temperature compensation calculation model; The actual gate voltage drift data of the power amplifier at different temperatures is obtained through experimental calibration, and the relationship between temperature and gate voltage drift is fitted using a multi-order polynomial fitting method to obtain the temperature compensation calculation model. The calculation formula of the temperature compensation calculation model is: in, is the gate voltage drift value, T is the original temperature data, b0, b1, b2, b3, ..., b n is the polynomial fitting coefficient, ΔT hist is the rate of change between real-time temperature and historical temperature, γ is the correction weight coefficient; Calculating a compensation voltage value according to the original temperature data and the gate voltage drift value; The calculation formula of the compensation voltage value is: in, is the compensation voltage value, Vbias target The target gate bias voltage required for the power amplifier to operate, is the gate voltage drift value, λ is the dynamic adjustment coefficient, T error is the accuracy error with respect to the monitored gate voltage target.

4. A power amplifier gate voltage temperature compensation method as claimed in claim 1, characterized in that: The step of converting the compensation voltage value into an analog voltage signal and outputting the analog voltage signal to a gate terminal of the power amplifier specifically includes: Converting the compensation voltage value into an analog voltage signal through a digital-to-analog converter; The analog voltage signal is applied to the gate terminal of the power amplifier through the output regulation module.

5. A power amplifier gate voltage temperature compensation method as claimed in claim 1, characterized in that: The monitoring of the gate voltage of the power amplifier after compensation to obtain a deviation signal of the compensation effect specifically includes: The gate voltage of the power amplifier is monitored in real time by a high-precision voltage acquisition module to obtain compensated gate voltage data. The high-precision voltage acquisition module adopts a 24-bit high-precision analog-to-digital converter with a sampling frequency of not less than 1kHz; The compensation deviation signal is calculated by the difference between the gate voltage data and the target gate voltage value. The target gate voltage value is dynamically adjusted in real time according to the temperature compensation calculation model to obtain a deviation signal of the compensation effect.

6. A power amplifier gate voltage temperature compensation method as claimed in claim 1, characterized in that: The step of optimizing and updating the parameters of the temperature compensation calculation model using an adaptive algorithm according to the deviation signal specifically includes: Based on the deviation signal of current temperature data and compensation effect, the fitting coefficient in the temperature compensation model is dynamically adjusted by using the recursive least square method combined with real-time monitoring data; And the fitting coefficients are optimized through the objective function minimization strategy.

7. A power amplifier gate voltage temperature compensation method as claimed in claim 6, characterized in that: The calculation formula of the fitting coefficient in the dynamic adjustment temperature compensation model is: Where b(t) is the fitting coefficient vector at time t, b(t-1) is the fitting coefficient vector at time t-1, K(t) is the gain vector, ΔV(t) is the actual offset voltage, h(T) is the characteristic vector composed of the current temperature data, and γ1 is the penalty term weight coefficient. is the gradient value of the fitting coefficient at time t.

8. A power amplifier gate voltage temperature compensation system, characterized in that: The system comprises: Temperature sensor module, used to collect the original temperature data of the power amplifier working environment in real time; A compensation voltage module, used to calculate the compensation voltage value required at the current temperature based on the original temperature data and using a preset temperature compensation calculation model of temperature and gate voltage drift; A signal processing module, used for converting the compensation voltage value into an analog voltage signal, and outputting the analog voltage signal to the gate terminal of the power amplifier; A deviation signal module is used to monitor the gate voltage of the power amplifier after compensation and obtain a deviation signal of the compensation effect; The gate voltage control module is used to optimize and update the parameters of the temperature compensation calculation model using an adaptive algorithm according to the deviation signal.

9. An electronic device, characterized in that: include: at least one processor, at least one memory, a communication interface, and a bus; The processor, memory, and communication interface communicate with each other via the bus, the memory stores program instructions executable by the processor, and the processor calls the program instructions to implement the method according to any one of claims 1 to 7.

10. A computer-readable storage medium, characterized in that: The computer-readable storage medium stores computer instructions, and the computer instructions enable a computer to implement the method according to any one of claims 1 to 7.

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