Test analysis method and equipment of radio frequency power supply sensor and storage medium

Abstract

The invention relates to a test analysis method and device for a radio frequency power supply sensor and a storage medium, and the method comprises the steps: carrying out the power linearity data collection of the radio frequency power supply sensor according to different output powers under the condition of radio frequency open-loop output; obtaining power test acquisition data of the sensor channel and the ADC signal acquisition link channel at a plurality of power test indexes under different output powers; performing frequency linearity data acquisition on the radio frequency power supply sensor according to a plurality of test frequency points set for the sensor to obtain frequency test acquisition data of a sensor channel and an ADC signal acquisition link channel corresponding to the plurality of test frequency points; determining power test results corresponding to different output powers according to the power test acquisition data and the power meter calibration data of the two channels in the plurality of power test indexes under different output powers; and according to the frequency test acquisition data of the two channels corresponding to the plurality of test frequency points, obtaining frequency test results corresponding to different frequency indexes.

Description

Technical Field

[0001] The present disclosure relates to the field of power supply technology, and in particular to a test and analysis method, device and storage medium for a radio frequency power supply sensor. Background Art

[0002] According to the working principle of the voltage and current sensor in the RF power supply, the sampling voltage element and the sampling current element are both passive devices. Therefore, in theory, the output signal of the sensor channel and the ADC signal acquisition link channel should change linearly with the increase of the output RF power. However, traditional RF power sensors often have deviations in the linearity of power and frequency, which directly affects the precise control and transmission quality of RF signals.

[0003] In order to improve the performance of RF power supply, RF power supply sensors are precisely calibrated and tested. However, most existing test methods are limited to the measurement of a single output power or frequency point, and cannot fully reflect the true performance of the sensor under different conditions. In particular, under different output powers, the changes in power linearity and frequency linearity of the sensor channel and ADC (analog-to-digital converter) signal acquisition link channel have a direct impact on the stability and accuracy of the RF signal. Summary of the invention

[0004] The purpose of the present invention is to provide a test and analysis method, device and storage medium for a radio frequency power supply sensor, aiming to solve the technical problem of testing a radio frequency power supply at a single output power or frequency point.

[0005] In order to achieve the above-mentioned object, a first aspect of an embodiment of the present disclosure provides a test and analysis method for a radio frequency power supply sensor, the method comprising:

[0006] In the case of RF open-loop output, power linearity data is collected for the RF power sensor according to different output powers, and power test collection data of the sensor channel and the ADC signal acquisition link channel under different output powers are obtained in multiple power test indicators;

[0007] According to the multiple test frequency points set for the sensor, frequency linearity data of the RF power sensor is collected to obtain frequency test collection data of the sensor channels and ADC signal acquisition link channels corresponding to the multiple test frequency points;

[0008] Determine power test results corresponding to different output powers according to power test collection data of the sensor channel and the ADC signal acquisition link channel at multiple power test indicators and power meter calibration data at different output powers;

[0009] Frequency test results corresponding to different frequency indicators are obtained based on the frequency test acquisition data of the sensor channels and the ADC signal acquisition link channels corresponding to the multiple test frequency points.

[0010] In a possible implementation, the frequency linearity data of the RF power sensor is collected according to the multiple test frequency points set for the sensor, and the frequency test collection data of the sensor channel and the ADC signal collection link channel corresponding to the multiple test frequency points are obtained, including:

[0011] Adjusting the parameter value of the target module in the radio frequency power supply according to the plurality of test frequency points averagely set within a preset frequency range;

[0012] The output signals of the sensor channels and the ADC signal acquisition link channels corresponding to the multiple test frequency points are collected.

[0013] In a possible implementation, adjusting the parameter value of the target module in the RF power supply according to the plurality of test frequency points averagely set within a preset frequency range includes:

[0014] According to the plurality of test frequency points averagely set within a preset frequency range, adjusting the parameter value of the DAC attenuation module in the RF power supply so that the output power of the RF power supply is fixed at a preset power;

[0015] The frequency test acquisition data of the sensor channels and the ADC signal acquisition link channels corresponding to the multiple test frequency points are obtained to obtain frequency test results corresponding to different frequency indicators, including:

[0016] The power value is calculated according to the output signals of the sensor channel and the ADC signal acquisition link channel, and the frequency response of the sensor channel and the ADC signal acquisition link channel is tested.

[0017] In one possible implementation, the parameter value of the DAC attenuation module is 1500W.

[0018] In a possible implementation, adjusting the parameter value of the target module in the RF power supply according to the plurality of test frequency points averagely set within a preset frequency range includes:

[0019] According to the plurality of test frequency points averagely set within a preset frequency range, adjusting the signal source of the DDS source in the radio frequency power supply to a preset fixed value;

[0020] The frequency test acquisition data of the sensor channels and the ADC signal acquisition link channels corresponding to the multiple test frequency points are obtained to obtain frequency test results corresponding to different frequency indicators, including:

[0021] The power value is calculated according to the output signals of the sensor channel and the ADC signal acquisition link channel, and the frequency response of the ADC signal acquisition link channel is tested.

[0022] In a possible implementation, the signal source of the DDS source is 18 dBm.

[0023] In a possible implementation, the preset frequency range is 12.882M-14.238M.

[0024] In a possible implementation, the multiple power test indicators include: forward power, reverse power, standing wave ratio, current and voltage;

[0025] In the case of RF open-loop output, power linearity data is collected for the RF power sensor according to different output powers, and power test collection data of the sensor channel and the ADC signal acquisition link channel under different output powers in multiple power test indicators are obtained, including:

[0026] In the case of RF open-loop output, different output powers are adjusted linearly to achieve stable output of the power amplifier after each output power switching, and the forward power, reverse power and standing wave ratio of the power meter are recorded;

[0027] After IQ demodulation, filtering, and extraction, the test acquisition data of the sensor channel and the ADC signal acquisition link channel on the current and the voltage at different output powers are recorded respectively.

[0028] According to a second aspect of the present disclosure, an electronic device is provided, including:

[0029] a memory having a computer program stored thereon;

[0030] A processor is used to execute the computer program in the memory to implement the steps of any one of the methods in the first aspect.

[0031] According to a third aspect of an embodiment of the present disclosure, a computer-readable storage medium is provided, on which a computer program is stored, and when the program is executed by a processor, the steps of any one of the methods described in the first aspect are implemented.

[0032] The present invention provides a test and analysis method for a radio frequency power sensor. Compared with the prior art, the present invention has the following beneficial effects:

[0033] Under different output powers, the power linearity data of the RF power sensor is collected, covering multiple power test indicators, which can accurately capture the performance changes of the sensor channel and the ADC signal acquisition link channel under different output powers. By comparing the power meter calibration data, the power test results corresponding to different output powers can be accurately evaluated, thereby achieving accurate calibration of the power linearity of the RF power sensor.

[0034] By setting multiple test frequency points, the frequency linearity data of the RF power sensor is collected. It can fully reflect the performance of the sensor at different frequencies and provide a reliable data basis for determining the frequency test results. By analyzing these data, the performance stability of the sensor at different frequency indicators can be accurately evaluated, providing guidance for optimizing the frequency response characteristics of the RF open-loop output system.

[0035] In summary, by comprehensively collecting and analyzing the linearity data of the RF power sensor at different output powers and frequencies, the performance of the RF open-loop output system can be accurately evaluated and optimized, and the stability and accuracy of the RF signal can be improved.

[0036] Other features and advantages of the present disclosure will be described in detail in the following detailed description. BRIEF DESCRIPTION OF THE DRAWINGS

[0037] The accompanying drawings are used to provide a further understanding of the present disclosure and constitute a part of the specification. Together with the following specific embodiments, they are used to explain the present disclosure but do not constitute a limitation of the present disclosure. In the accompanying drawings:

[0038] Figure 1 It is a flow chart of a test and analysis method of a radio frequency power sensor shown in an embodiment of the specification.

[0039] Figure 2 It is a circuit diagram of a DAC attenuation module according to an embodiment of the specification.

[0040] Figure 3 This is a sensor and ADC signal acquisition link response relationship shown in an embodiment of the specification.

[0041] Figure 4 This is a relationship between the output voltage and the sensor voltage at 50 omh shown in an embodiment of the specification.

[0042] Figure 5 It is a schematic diagram of voltage output of two channels at 50 omh according to an embodiment of the specification.

[0043] Figure 6 This is a relationship between the output voltage and current of a 2M sensor V2 shown in an embodiment of the specification.

[0044] Figure 7 This is a relationship between the output voltage and the sensor voltage at 50 omh shown in an embodiment of the specification.

[0045] Figure 8 It is a schematic diagram of voltage output of two channels at 50 omh according to an embodiment of the specification.

[0046] Fig. 9 The following is a relationship between the output voltage and current of an AE2M sensor according to an embodiment of the specification.

[0047] Fig.10 This is a relationship between the output voltage and the sensor voltage at 50 omh shown in an embodiment of the specification.

[0048] Fig.11 It is a schematic diagram of voltage output of two channels at 50 omh according to an embodiment of the specification.

[0049] Fig.12 This is a relationship between the output voltage and current of a 13.56M sensor V2 (power meter 1) shown in an embodiment of the specification.

[0050] Fig.13 This is a relationship between the output voltage and the sensor voltage at 50 omh shown in an embodiment of the specification.

[0051] Fig.14 It is a schematic diagram of voltage output of two channels at 50 omh according to an embodiment of the specification.

[0052] Fig.15 This is a relationship between the output voltage and current of a 13.56M sensor V2 (power meter 2) shown in an embodiment of the specification.

[0053] Fig.16 This is a relationship between the output voltage and the sensor voltage at 50 omh shown in an embodiment of the specification.

[0054] Fig.17 It is a schematic diagram of voltage output of two channels at 50 omh according to an embodiment of the specification.

[0055] Fig.18 This is a relationship between the output voltage and current of a 13.56M sensor V1 (power meter 2) shown in an embodiment of the specification.

[0056] Fig.19 It is a block diagram of another test and analysis device for a radio frequency power sensor shown in an embodiment of the specification. DETAILED DESCRIPTION

[0057] The following will be combined with the drawings in 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.

[0058] The specific implementation of the present disclosure is described in detail below in conjunction with the accompanying drawings. It should be understood that the specific implementation described herein is only used to illustrate and explain the present disclosure, and is not used to limit the present disclosure.

[0059] The present invention provides a test and analysis method for a radio frequency power supply sensor. Figure 1 This is a flow chart of a test and analysis method for a radio frequency power sensor according to an embodiment. The method comprises:

[0060] In step S11, in the case of RF open-loop output, power linearity data is collected for the RF power sensor according to different output powers, and power test collection data of the sensor channel and the ADC signal acquisition link channel under different output powers in multiple power test indicators are obtained;

[0061] Among them, the RF power supply includes the main controller MCU, the slave controller FPGA, the DDS source, the ADC detection module, the DAC attenuation module, the PA power amplifier module, and the sensor;

[0062] Wherein, the main controller MCU is used for communication control, system protection, and protocol conversion;

[0063] The slave controller FPGA, as a programmable logic device, adjusts and controls the output of the RF power supply according to the instructions or preset algorithms of the master controller MCU, so as to realize the logical functions of the RF power supply through programming;

[0064] The DDS source is used to generate a signal source with a specific waveform and frequency;

[0065] The ADC detection module is used to collect the analog signal of the radio frequency power supply and convert the analog signal into a digital signal;

[0066] The DAC attenuation module is used to convert the digital control signal into an analog control signal to adjust the output signal of the RF power supply, wherein the DAC attenuation module adopts a low-speed operational amplifier to increase the response time so that the second power value obtained by the DDS source looking up the power correspondence table corresponds to the first power value one by one, wherein the first power value is the expected output power value under different scenarios, and the second power value is the actual output power value corresponding to the first power value. The power correspondence table provides the corresponding relationship between the expected output power value and the actual output power value of the DDS source, and the first power value is used to determine the power range that the signal source output by the DDS source can represent after DAC conversion and attenuation;

[0067] The PA power amplifier module is used to amplify the output signal of the RF power supply to meet the power demand of the load;

[0068] The sensor is used for signal transmission and coupling and real-time monitoring of voltage and current values ​​in a power supply system, wherein the sensor may be a coupling / VI sensor.

[0069] In one embodiment, see Figure 2 As shown, the DAC attenuation module includes: an operational amplifier U24B, a resistor R338, a resistor R242, a resistor R245, a resistor R244, a variable resistor VR2 and a capacitor C262, wherein the 0dB open-loop gain-bandwidth product of the operational amplifier is 1M, and the closed-loop bandwidth is 100k;

[0070] The first end of the resistor R338 is connected to the first end of the resistor R242 to form a first connection point; the second end of the resistor R338 is connected to the signal source output end of the DDS source, the second end of the resistor R242 is connected to the output end of the switch, the first end of the capacitor C262 is connected to the first connection point, and the second end of the capacitor C262 is grounded;

[0071] The output end of the operational amplifier U24B is connected to the first end of the resistor R245 and the sliding contact end of the variable resistor VR2, and is constructed as the output end of the DAC attenuation module. The second end of the resistor R245 and the fixed first contact end of the variable resistor VR2 are connected to form a second connection point, and the fixed second contact end of the variable resistor VR2 is suspended.

[0072] The non-inverting input terminal of the operational amplifier U24B is connected to the first connection point, the inverting input terminal of the operational amplifier U24B is connected to the first end of the resistor R242, the second end of the resistor R242 is grounded, and the first end of the resistor R242 is connected to the second connection point.

[0073] In one implementation, the operational amplifier is LM358.

[0074] In one implementation, the resistor R242 is 30Ω, the resistor R245 is 1.5KΩ±1, the resistor R244 is 1KΩ±1, and the capacitor C262 is 0.1uF.

[0075] Among them, RF open-loop output refers to the operation of the RF system without closed-loop feedback control, and the output signal is not subject to feedback regulation.

[0076] Power linearity: Describes the degree of linear relationship between the sensor output signal and input power.

[0077] ADC signal acquisition link: Analog-to-Digital Converter (ADC) and its related signal processing and transmission paths.

[0078] In the disclosed embodiment, the RF power sensor operates without feedback control, and the power linearity test of the sensor is performed by changing the output power of the RF power. During the test, the RF power changes received by the sensor are converted into corresponding electrical signals, which are converted into digital signals through the ADC signal acquisition link. By collecting data at multiple output power points, the linear performance of the sensor at different power levels can be evaluated.

[0079] For example, assuming that the output power of the RF power source increases from 10W to 100W in steps of 10W, the output data of the sensor channel and the ADC signal acquisition link channel are recorded at each power point. These data will be used to analyze the linearity of the sensor at different powers, such as by calculating the linear regression coefficient between the actual output power and the sensor reading.

[0080] In step S12, frequency linearity data of the RF power sensor is collected according to the multiple test frequency points set for the sensor, and frequency test collection data of the sensor channels and ADC signal collection link channels corresponding to the multiple test frequency points are obtained;

[0081] Among them, frequency linearity: describes the degree of linear relationship between the sensor output signal and the input signal frequency.

[0082] Test frequency: The frequency point used for testing is usually a series of frequencies covering the operating frequency range of the sensor.

[0083] In the disclosed embodiment, the RF power sensor is set to different test frequencies, and a frequency linearity test is performed at each frequency. The frequency change of the RF signal received by the sensor is converted into a corresponding electrical signal, which is also converted into a digital signal through the ADC signal acquisition link. By collecting data at different frequencies, the linear performance of the sensor at different frequencies can be evaluated.

[0084] For example: Assume that the test frequency is set from 1GHz to 5GHz with an interval of 1GHz. For each frequency, the output data of the sensor channel and the ADC signal acquisition link channel are recorded. These data will be used to analyze the linearity of the sensor at different frequencies, such as by comparing the linear relationship between the output signal and the input frequency at different frequencies.

[0085] In step S13, power test results corresponding to different output powers are determined according to the power test collection data of the sensor channel and the ADC signal acquisition link channel at multiple power test indicators and the power meter calibration data at different output powers;

[0086] Among them, power meter calibration data: known power values ​​used to calibrate the power meter and their corresponding sensor readings.

[0087] In the disclosed embodiment, the actual power reading error of the sensor at different output powers can be calculated based on the collected power test acquisition data and power meter calibration data. The power test accuracy of the sensor can be determined by comparing the sensor reading with the actual power value.

[0088] For example: If the power meter calibration data shows that at 100W, the sensor should output a specific voltage value, but the sensor output deviates from this value in the actual test, the power test error of the sensor can be determined by calculating this deviation.

[0089] In step S14, frequency test results corresponding to different frequency indicators are obtained according to the frequency test acquisition data of the sensor channels and ADC signal acquisition link channels corresponding to the multiple test frequency points.

[0090] In the disclosed embodiment, the performance of the sensor at different frequencies can be evaluated based on the collected frequency test data. The frequency response characteristics of the sensor, such as frequency sensitivity, phase response, etc., can be calculated by analyzing the output signals at different frequencies.

[0091] For example, if the amplitude or phase of the sensor output signal at a certain frequency point deviates greatly from the expected value, this may indicate that the sensor's performance at this frequency point is poor and requires further debugging or optimization. By combining the test results of multiple frequency points, you can get an overview of the sensor's performance over the entire operating frequency range.

[0092] The above technical solution collects power linearity data of RF power sensors at different output powers, covering multiple power test indicators and accurately capturing the performance changes of sensor channels and ADC signal acquisition link channels at different output powers. By comparing the power meter calibration data, the power test results corresponding to different output powers can be accurately evaluated, thereby achieving accurate calibration of the power linearity of the RF power sensor.

[0093] By setting multiple test frequency points, the frequency linearity data of the RF power sensor is collected. It can fully reflect the performance of the sensor at different frequencies and provide a reliable data basis for determining the frequency test results. By analyzing these data, the performance stability of the sensor at different frequency indicators can be accurately evaluated, providing guidance for optimizing the frequency response characteristics of the RF open-loop output system.

[0094] In summary, by comprehensively collecting and analyzing the linearity data of the RF power sensor at different output powers and frequencies, the performance of the RF open-loop output system can be accurately evaluated and optimized, and the stability and accuracy of the RF signal can be improved.

[0095] In a possible implementation, in step S12, frequency linearity data collection is performed on the RF power sensor according to a plurality of test frequency points set for the sensor, and frequency test collection data of sensor channels and ADC signal collection link channels corresponding to the plurality of test frequency points are obtained, including:

[0096] In step S121, according to a plurality of test frequency points averagely set within a preset frequency range, a parameter value of a target module in the radio frequency power supply is adjusted;

[0097] Among them, the preset frequency range is a frequency test range determined in advance according to the working characteristics and application requirements of the RF power sensor.

[0098] Target module: The component or module in the RF power supply that is responsible for generating the RF signal.

[0099] Parameter value: refers to the adjustable parameter value in the RF power supply, such as frequency, amplitude, phase, etc., which is used to control the output characteristics of the RF signal.

[0100] In the disclosed embodiment, first, a series of test frequency points are uniformly selected according to a preset frequency range. These frequency points should cover the main operating frequencies of the RF power sensor and ensure that there are enough test points in the entire frequency range to evaluate the frequency linearity of the sensor. Next, the parameters of the target module in the RF power supply are adjusted so that the output frequency of the RF signal corresponds to these test frequency points in turn. The adjustment process may involve the control of the internal circuit of the RF power supply, such as changing the frequency of the oscillator, adjusting the output of the signal generator, etc.

[0101] In step S122, output signals of the sensor channels and the ADC signal acquisition link channels corresponding to the plurality of test frequency points are collected.

[0102] Among them, when the output frequency of the RF power supply is stable at each test frequency point, the sensor channel will receive the corresponding RF signal and convert it into an electrical signal. This electrical signal is then converted into a digital signal through the ADC signal acquisition link for subsequent data processing and analysis. At each test frequency point, the output signals of the sensor channel and the ADC signal acquisition link channel need to be collected to ensure that the performance of the sensor at different frequencies can be fully evaluated.

[0103] In a possible implementation, in step S121, adjusting the parameter value of the target module in the RF power supply according to the plurality of test frequency points averagely set within a preset frequency range includes:

[0104] According to the plurality of test frequency points averagely set within a preset frequency range, adjusting the parameter value of the DAC attenuation module in the RF power supply so that the output power of the RF power supply is fixed at a preset power;

[0105] In order to obtain consistent output power at each test frequency, it is necessary to adjust the parameter value of the DAC attenuation module in the RF power supply. The DAC attenuation module receives instructions from the digital controller and changes its internal attenuation settings to adjust the output power of the RF signal. By precisely controlling the parameters of the DAC attenuation module, it can be ensured that the output power of the RF power supply at each test frequency is stable at the preset power level.

[0106] In step S14, the frequency test acquisition data of the sensor channels and ADC signal acquisition link channels corresponding to the multiple test frequency points are obtained to obtain frequency test results corresponding to different frequency indicators, including:

[0107] The power value is calculated according to the output signals of the sensor channel and the ADC signal acquisition link channel, and the frequency response of the sensor channel and the ADC signal acquisition link channel is tested.

[0108] Among them, frequency response: the ability of a system or component to respond to signals of different frequencies, usually manifested as characteristics such as gain and phase that change with frequency.

[0109] In the disclosed embodiment, the corresponding power value is calculated based on the output signal of the sensor channel and the ADC signal acquisition link channel at each test frequency point. Then, by comparing the power values ​​calculated at different frequencies, the frequency response of the sensor channel and the ADC signal acquisition link channel can be evaluated. Ideally, the frequency response of the sensor channel and the ADC signal acquisition link channel should be flat, that is, the power values ​​measured at different frequencies should remain consistent or vary very little. If the measured power value varies greatly with frequency, it may indicate that there is a frequency linearity problem in the sensor channel or the ADC signal acquisition link channel.

[0110] In the disclosed embodiment, 9 frequency points are tested in the band (12.882M-14.238M) on average, the DAC value is adjusted to fix the output power at 1500W, two-way signals are collected, the power value is calculated, and the sensor+ADC frequency response is tested.

[0111] In one possible implementation, the parameter value of the DAC attenuation module is 1500W.

[0112] In a possible implementation, in step S121, adjusting the parameter value of the target module in the RF power supply according to the plurality of test frequency points averagely set within a preset frequency range includes:

[0113] According to the plurality of test frequency points averagely set within a preset frequency range, adjusting the signal source of the DDS source in the radio frequency power supply to a preset fixed value;

[0114] Among them, the preset fixed value is: during the test process, in order to maintain the consistency of the test conditions, the specific parameter value (such as frequency, phase or amplitude) of the DDS source output signal is set.

[0115] In the disclosed embodiment, in order to ensure that the output signal of the RF power supply at each test frequency point has consistent waveform characteristics (such as frequency stability, phase noise, etc.), it is necessary to adjust the signal source parameters of the DDS source to preset fixed values. The DDS source generates RF signals digitally, and the frequency, phase and amplitude of its output signal can be precisely adjusted by digital control. By setting the parameters of the DDS source to preset fixed values, it can be ensured that the output signal of the RF power supply at each test frequency point has the same waveform characteristics, thereby eliminating the influence of changes in waveform characteristics on the test results.

[0116] In step S14, the frequency test acquisition data of the sensor channels and ADC signal acquisition link channels corresponding to the multiple test frequency points are obtained to obtain frequency test results corresponding to different frequency indicators, including:

[0117] The power value is calculated according to the output signals of the sensor channel and the ADC signal acquisition link channel, and the frequency response of the ADC signal acquisition link channel is tested.

[0118] Among them, the corresponding power values ​​have been calculated based on the output signals of the sensor channel and the ADC signal acquisition link channel at each test frequency point. Next, these power values ​​are used to test the frequency response of the ADC signal acquisition link channel. Frequency response is one of the important indicators for evaluating the performance of a system or component, which reflects the ability of the system or component to respond to signals of different frequencies. For the ADC signal acquisition link channel, its frequency response is usually manifested as a gain-with-frequency variation characteristic. If the gain of the ADC signal acquisition link channel varies greatly with frequency, it may not be able to accurately acquire and convert signals of different frequencies, thereby affecting the performance of the entire system.

[0119] In order to test the frequency response of the ADC signal acquisition link channel, the power value calculated at each test frequency point can be plotted into a frequency response curve. By comparing the power values ​​(i.e., gain) measured at different frequencies, the performance of the ADC signal acquisition link channel at different frequencies can be evaluated. If the frequency response curve is flat (i.e., the gain values ​​at different frequencies are not much different), then it means that the ADC signal acquisition link channel has good frequency linearity; if the frequency response curve is not flat (i.e., the gain values ​​at certain frequencies are significantly higher or lower than the gain values ​​at other frequencies), then it means that the ADC signal acquisition link channel may have frequency linearity problems, which requires further analysis and optimization.

[0120] In a possible implementation, the signal source of the DDS source is 18 dBm.

[0121] In the disclosed embodiment, 9 frequency points are tested in the band (12.882M-14.238M) on average, the signal source is fixed at 18dbm output, two-way signals are collected, the power value is calculated, and the ADC frequency response is tested.

[0122] In a possible implementation, the preset frequency range is 12.882M-14.238M.

[0123] In the disclosed embodiment, refer to Figure 3 As shown in the figure, the frequency response of the sensor is consistent with the theoretical analysis and is approximately a straight line passing through zero. The result of multiplying the straight line with the ADC frequency response is basically consistent with the actual measured frequency response.

[0124] If the frequency response of the ADC signal acquisition link is uneven and irregular, it cannot be compensated by a fixed function. If the response is consistent, the data can be measured and a reverse table lookup can be performed for compensation.

[0125] In a possible implementation, the multiple power test indicators include: forward power, reverse power, standing wave ratio, current and voltage;

[0126] In the case of RF open-loop output, power linearity data is collected for the RF power sensor according to different output powers, and power test collection data of the sensor channel and the ADC signal acquisition link channel under different output powers in multiple power test indicators are obtained, including:

[0127] In the case of RF open-loop output, different output powers are adjusted linearly to achieve stable output of the power amplifier after each output power switching, and the forward power, reverse power and standing wave ratio of the power meter are recorded;

[0128] Among them, forward power refers to the power of the RF signal output from the RF source (such as an RF power amplifier) ​​and transmitted in the forward direction along the transmission line. Reverse power refers to the power of the RF signal reflected back to the RF source during the transmission process due to mismatch of the transmission line or other reasons. Standing wave ratio is the ratio of the voltage amplitudes of adjacent antinodes and nodes on the transmission line. It can also be used to indicate the relative value of the standing wave on the transmission line and is often used to describe the matching state of the transmission line. The larger the standing wave ratio, the worse the matching state of the transmission line and the greater the reflected power.

[0129] Among them, RF open-loop output: refers to the output of the RF power supply without feedback control. At this time, the output power is determined by the RF power supply itself and is not affected by external factors. Power linearity: refers to the degree of linear relationship between the output power of the RF power supply and its input control signal (such as voltage or current).

[0130] In the embodiment of the present disclosure, different output powers are adjusted linearly: in the RF open-loop output mode, the output power of the RF power supply is linearly changed by adjusting the control signal (such as voltage or current) of the RF power supply. It is ensured that each output power adjustment is linear, that is, a certain proportional relationship is maintained between the output power and the control signal.

[0131] Achieve stable output of the amplifier after each output power switch: After each output power adjustment, wait for the RF power amplifier (PA) to reach a stable output state. Stable output state means that the power output of the PA no longer changes significantly over time, and it can be considered that the PA has adapted to the new output power.

[0132] Record the forward power, reverse power and standing wave ratio of the power meter: Use a power meter to measure and record the forward power, reverse power and standing wave ratio of the power amplifier output. The forward power reflects the actual output power of the power amplifier; the reverse power reflects the reflected power caused by reasons such as mismatching of the transmission line; the standing wave ratio is used to evaluate the matching status of the transmission line.

[0133] After IQ demodulation, filtering, and extraction, the test acquisition data of the sensor channel and the ADC signal acquisition link channel on the current and the voltage at different output powers are recorded respectively.

[0134] In the disclosed embodiment, the RF signal is IQ demodulated and converted into a baseband signal. The demodulated baseband signal is filtered to remove noise and interference. The filtered signal is extracted to extract the required current and voltage information. The test acquisition data of the sensor channel and the ADC signal acquisition link channel in current and voltage at different output powers are recorded respectively. These data reflect the impact of the RF power supply on the sensor channel and the ADC signal acquisition link channel at different output powers and their response.

[0135] In this way, the test acquisition data of multiple power test indicators of the RF power supply at different output powers can be obtained, and then the power linearity of the RF power supply and the performance of the sensor channel and the ADC signal acquisition link channel can be evaluated and analyzed.

[0136] In the embodiment of the present disclosure, for the test data collected by the sensor when the output power is 2M, refer to Figure 4-6 As shown, the relationship between the output voltage and current in the measured data collected by the sensor channel (2M sensor) cannot meet the linearity requirement. Figure 7-9 As shown, the relationship between the output voltage and current in the measured acquisition data corresponding to the ADC signal acquisition link channel (AE2M sensor) cannot meet the linearity requirements for calibrating the sensor data.

[0137] In the embodiment of the present disclosure, refer to the test collection data shown in Table 1 below:

[0138] dacx 1000 vswr opd rpd(mw) adc1 i adc1 q adc2i adc2 q 15 1.06 218 223 2390 4651 758 1199 20 1.06 735 637 4579 8471 1418 2171 25 1.06 1146 805 6218 10293 1883 2635

[0139] Table 1

[0140] From the table, we can see that when the 12.882M sensor is calibrated with different power meters, there are two results. The data under one power meter test is nonlinear (see Figure 10-12 ), the result of another power meter is very consistent with the result of 13.56MV1\V2, which preliminarily confirms that the calculation method and implementation are correct (see Figure 13-15 as well as Figure 16-18 shown).

[0141] The present disclosure also provides a computer-readable storage medium on which a computer program is stored. When the program is executed by a processor, the steps of the method described in any one of the aforementioned embodiments are implemented.

[0142] The present disclosure also provides an electronic device, including:

[0143] a memory having a computer program stored thereon;

[0144] A processor is used to execute the computer program in the memory to implement the steps of the method in any one of the aforementioned embodiments.

[0145] Figure 2 The test and analysis device 100 of the RF power sensor shown includes: a processor 1001 and a memory 1003. The processor 1001 and the memory 1003 are connected, such as through a bus 1002. Optionally, the test and analysis device 100 of the RF power sensor may also include a communication component 1004, which may be used for data interaction between the device 100 and other devices, such as data transmission and / or data reception. It should be noted that in actual scheduling, the communication component 1004 is not limited to one, and the structure of the test and analysis device 100 of the RF power sensor does not constitute a limitation on the embodiments of the present application.

[0146] Processor 1001 may be a CPU (Central Processing Unit), a general purpose processor, a DSP (Digital Signal Processor), an ASIC (Application Specific Integrated Circuit), an FPGA (Field Programmable Gate Array) or other programmable logic devices, transistor logic devices, hardware components or any combination thereof. It may implement or execute various exemplary logic blocks, modules and circuits described in conjunction with the disclosure of this application. Processor 1001 may also be a combination that implements computing functions, such as a combination of one or more microprocessors, a combination of a DSP and a microprocessor, etc.

[0147] The bus 1002 may include a path to transmit information between the above components. The bus 1002 may be a PCI (Peripheral Component Interconnect) bus or an EISA (Extended Industry Standard Architecture) bus. The bus 1002 may be divided into an address bus, a data bus, a control bus, etc. For ease of representation, Figure 2 Only one thick line is used in the diagram, but this does not mean that there is only one bus or only one type of bus.

[0148] The memory 1003 can be a ROM (Read Only Memory) or other types of static storage devices that can store static information and instructions, a RAM (Random Access Memory) or other types of dynamic storage devices that can store information and instructions, or an EEPROM (Electrically Erasable Programmable Read Only Memory), a CD-ROM (Compact Disc Read Only Memory) or other optical disk storage, optical disk storage (including compressed optical disk, laser disk, optical disk, digital versatile disk, Blu-ray disk, etc.), magnetic disk storage medium, other magnetic storage devices, or any other medium that can be used to carry or store program code and can be read by a computer, without limitation herein.

[0149] The memory 1003 is used to store program codes for executing the embodiments of the present disclosure, and the execution is controlled by the processor 1001. The processor 1001 is used to execute the program codes stored in the memory 1003 to implement the steps shown in the embodiment of the test and analysis method of the RF power sensor.

[0150] The embodiment of the present disclosure further provides a computer-readable storage medium having program code stored thereon. When the program code is executed by a processor, the steps and corresponding contents of the embodiment of the test and analysis method of the RF power sensor can be implemented.

[0151] The preferred embodiments of the present disclosure are described in detail above in conjunction with the accompanying drawings; however, the present disclosure is not limited to the specific details in the above embodiments; within the technical concept of the present disclosure, various changes, modifications, substitutions and variations may be made to these embodiments, and these changes, modifications, substitutions and variations all fall within the protection scope of the present disclosure.

[0152] It should also be noted that the various specific technical features described in the above specific embodiments can be combined in any appropriate manner without contradiction, and they should also be regarded as the contents disclosed in this disclosure. In order to avoid unnecessary repetition, this disclosure will not further describe various possible combinations. The technical scope of this application is not limited to the contents in the specification, and its technical scope must be determined according to the scope of the claims.

Claims

1. A test and analysis method for a radio frequency power sensor, characterized in that: The method comprises: In the case of RF open-loop output, power linearity data is collected for the RF power sensor according to different output powers, and power test collection data of the sensor channel and the ADC signal acquisition link channel under different output powers are obtained in multiple power test indicators; According to the multiple test frequency points set for the sensor, frequency linearity data of the RF power sensor is collected to obtain frequency test collection data of the sensor channels and ADC signal acquisition link channels corresponding to the multiple test frequency points; Determine power test results corresponding to different output powers according to power test collection data of the sensor channel and the ADC signal acquisition link channel at multiple power test indicators and power meter calibration data at different output powers; Frequency test results corresponding to different frequency indicators are obtained based on the frequency test acquisition data of the sensor channels and the ADC signal acquisition link channels corresponding to the multiple test frequency points.

2. The test and analysis method of the radio frequency power sensor according to claim 1, characterized in that: The method of collecting frequency linearity data of the RF power sensor according to the multiple test frequency points set for the sensor to obtain frequency test collection data of the sensor channels and ADC signal collection link channels corresponding to the multiple test frequency points includes: Adjusting the parameter value of the target module in the radio frequency power supply according to the plurality of test frequency points averagely set within a preset frequency range; The output signals of the sensor channels and the ADC signal acquisition link channels corresponding to the multiple test frequency points are collected.

3. The test and analysis method of the radio frequency power sensor according to claim 2, characterized in that: The step of adjusting the parameter value of the target module in the radio frequency power supply according to the plurality of test frequency points averagely set within a preset frequency range includes: According to the plurality of test frequency points averagely set within a preset frequency range, adjusting the parameter value of the DAC attenuation module in the RF power supply so that the output power of the RF power supply is fixed at a preset power; The frequency test acquisition data of the sensor channels and the ADC signal acquisition link channels corresponding to the multiple test frequency points are obtained to obtain frequency test results corresponding to different frequency indicators, including: The power value is calculated according to the output signals of the sensor channel and the ADC signal acquisition link channel, and the frequency response of the sensor channel and the ADC signal acquisition link channel is tested.

4. The test and analysis method of the radio frequency power sensor according to claim 3, characterized in that: The parameter value of the DAC attenuation module is 1500W.

5. The test and analysis method of the radio frequency power sensor according to claim 2, characterized in that: The step of adjusting the parameter value of the target module in the radio frequency power supply according to the plurality of test frequency points averagely set within a preset frequency range includes: According to the plurality of test frequency points averagely set within a preset frequency range, adjusting the signal source of the DDS source in the radio frequency power supply to a preset fixed value; The frequency test acquisition data of the sensor channels and the ADC signal acquisition link channels corresponding to the multiple test frequency points are obtained to obtain frequency test results corresponding to different frequency indicators, including: The power value is calculated according to the output signals of the sensor channel and the ADC signal acquisition link channel, and the frequency response of the ADC signal acquisition link channel is tested.

6. The test and analysis method of the radio frequency power sensor according to claim 5, characterized in that: The signal source of the DDS source is 18dbm.

7. The test and analysis method of the radio frequency power sensor according to claim 2, characterized in that: The preset frequency range is 12.882M-14.238M.

8. The test and analysis method of the radio frequency power sensor according to claim 1, characterized in that: The multiple power test indicators include: forward power, reverse power, standing wave ratio, current and voltage; In the case of RF open-loop output, power linearity data is collected for the RF power sensor according to different output powers, and power test collection data of the sensor channel and the ADC signal acquisition link channel under different output powers in multiple power test indicators are obtained, including: In the case of RF open-loop output, different output powers are adjusted linearly to achieve stable output of the power amplifier after each output power switching, and the forward power, reverse power and standing wave ratio of the power meter are recorded; After IQ demodulation, filtering, and extraction, the test acquisition data of the sensor channel and the ADC signal acquisition link channel on the current and the voltage at different output powers are recorded respectively.

9. An electronic device, comprising: a memory having a computer program stored thereon; A processor, configured to execute the computer program in the memory to implement the steps of the method according to any one of claims 1 to 8.

10. A computer-readable storage medium having a computer program stored thereon, wherein when the program is executed by a processor, the steps of the method according to any one of claims 1 to 8 are implemented.

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