Bidirectional power measurement device and power measurement method

Abstract

The invention provides a bidirectional power measuring device and a power measuring method. The bidirectional power measuring device comprises a radio frequency connector which is used for connecting a signal input port or a signal output port of a tested device; the attenuator is connected with the radio frequency connector and is used for carrying out impedance matching on the radio frequency signal; the splitter is connected with the attenuator and is used for dividing the radio frequency signal into two paths of signals; the power detection module is connected with the first signal path and is used for converting the received radio frequency signal into a voltage signal corresponding to power; the analog-to-digital conversion module is connected with the power detection module and is used for converting the voltage signal into a digital signal; the frequency synthesizer is connected with the second signal path and is used for generating a continuous wave signal in a preset frequency range; and the signal processing module is connected with the analog-to-digital conversion module and is used for carrying out filtering processing, multiple average calculation and power value calibration on the digital signal. According to the invention, the test cost can be reduced, the test efficiency and portability can be improved, and the measurement error can be reduced.

Description

Technical Field

[0001] The present application relates to the field of wireless communication technology, and in particular to a bidirectional power measurement device and a power measurement method. Background Art

[0002] During the development and production of wireless electronic devices, the measurement and calibration of transmit power and receive power are key testing steps. These tests are directly related to whether the performance of the device meets the design requirements and its reliability in wireless communications.

[0003] Currently, the industry usually uses the following two independent test equipment to measure the transmit power and receive power respectively:

[0004] Transmitter power measurement: Use a power meter or spectrum analyzer to directly connect the transmit port of the device under test to measure the power of the transmitted signal. The power meter converts the RF signal into a voltage signal through the internal power detection module and outputs the digital power value to the display terminal or computer.

[0005] Receiver power measurement: Use a signal source to directly connect the receiving port of the device under test and output a signal of a specific frequency and power to the device input port. After the device under test receives the signal, the received power value is recorded as an evaluation indicator of the receiving performance.

[0006] However, conventional power measurement devices and methods still have the problems of high test cost, low test efficiency, poor portability, and large measurement errors. Summary of the invention

[0007] In view of this, the embodiments of the present application provide a bidirectional power measurement device and a power measurement method to solve the problems of high test cost, low test efficiency, poor portability, and large measurement error in the prior art.

[0008] According to a first aspect of an embodiment of the present application, a bidirectional power measurement device is provided, comprising: a radio frequency connector, used to connect a signal input port or a signal output port of a device under test to receive a transmission signal of the device under test or to provide a reception signal to the device under test; an attenuator, connected to the radio frequency connector, used to perform impedance matching on the input or output radio frequency signal to reduce the signal strength; a splitter, connected to the attenuator, used to split the radio frequency signal into two signals, wherein the first signal path is used to guide the signal to a power detection module, and the second signal path is used to transmit the signal to the device under test or to receive the transmission signal of the device under test; a power detection module, connected to the first signal path of the splitter, used to convert the received radio frequency signal into a voltage signal corresponding to the power; an analog-to-digital conversion module, connected to the power detection module, used to convert the voltage signal into a digital signal; a frequency synthesizer, connected to the second signal path of the splitter, used to generate a continuous wave signal within a preset frequency range, and guide the continuous wave signal to the power detection module and the device under test respectively through the splitter; a signal processing module, connected to the analog-to-digital conversion module, used to filter the digital signal, perform multiple average calculations and calibrate the power value, and output the power measurement result.

[0009] A second aspect of the embodiment of the present application provides a power measurement method of a bidirectional power measurement device based on the first aspect, comprising: connecting a signal input port or a signal output port of a device under test to the bidirectional power measurement device through a radio frequency connector; when measuring the transmission power, receiving a radio frequency signal output by the device under test, and performing impedance matching and attenuation on the radio frequency signal using an attenuator; using a splitter to divide the attenuated radio frequency signal into two paths, wherein one signal is converted into a voltage signal corresponding to the power by a power detection module, and the other signal path is used for transmission to the device under test; using an analog-to-digital conversion module to convert the voltage signal into a digital signal, The signal processing module performs filtering, multiple averaging calculations and power value calibration, and outputs the transmission power measurement result. When measuring the received power, a frequency synthesizer is used to generate a continuous wave signal within a preset frequency range, and an electrically tunable filter is used to filter out harmonics of the continuous wave signal. A splitter is used to divide the continuous wave signal into two paths, one of which is transmitted to the signal input port of the device under test, and the other signal path is measured by the power detection module for the reference power value. The reference power value is processed by the analog-to-digital conversion module and the signal processing module, the actual input power is recorded, and the received power measurement result of the device under test is output according to the power calibration value.

[0010] At least one of the above technical solutions adopted in the embodiments of the present application can achieve the following beneficial effects:

[0011] The RF connector is used to connect the signal input port or signal output port of the device under test to receive the transmission signal of the device under test or provide the receiving signal to the device under test; the attenuator is connected to the RF connector and is used to perform impedance matching on the input or output RF signal to reduce the signal strength; the splitter is connected to the attenuator and is used to divide the RF signal into two signals, wherein the first signal path is used to guide the signal to the power detection module, and the second signal path is used to transmit the signal to the device under test or receive the transmission signal of the device under test; the power detection module is connected to the first signal path of the splitter and is used to convert the received RF signal into a voltage signal corresponding to the power; the analog-to-digital conversion module is connected to the power detection module and is used to convert the voltage signal into a digital signal; the frequency synthesizer is connected to the second signal path of the splitter and is used to generate a continuous wave signal within a preset frequency range, and guide the continuous wave signal to the power detection module and the device under test respectively through the splitter; the signal processing module is connected to the analog-to-digital conversion module and is used to filter the digital signal, perform multiple average calculations and calibrate the power value, and output the power measurement result. This application can reduce testing costs, improve testing efficiency and portability, and reduce measurement errors. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] In order to more clearly illustrate the technical solutions in the embodiments of the present application, 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 application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0013] Figure 1 This is a schematic diagram of the principle of the transmitter and receiver power measurement scheme commonly used in the industry;

[0014] Figure 2 It is a product structure diagram of a bidirectional power measurement device involved in an actual scenario provided by an embodiment of the present application;

[0015] Figure 3 is a structural block diagram of a bidirectional power measurement device provided in an embodiment of the present application;

[0016] Figure 4 It is a flowchart of a transmission power measurement method provided in an embodiment of the present application;

[0017] Figure 5 It is a flowchart of a receiving power measurement method provided in an embodiment of the present application;

[0018] Figure 6 It is a schematic diagram of the structure of an electronic device provided in an embodiment of the present application. DETAILED DESCRIPTION

[0019] In the following description, specific details such as specific system structures, technologies, etc. are provided for the purpose of illustration rather than limitation, so as to provide a thorough understanding of the embodiments of the present application. However, it should be clear to those skilled in the art that the present application may also be implemented in other embodiments without these specific details. In other cases, detailed descriptions of well-known systems, devices, circuits, and methods are omitted to prevent unnecessary details from obstructing the description of the present application.

[0020] In the development and production of wireless electronic devices, the calibration of their transmission and reception power is an important test link. The industry usually uses a power meter or spectrum analyzer to measure the transmitter power of the equipment, and a signal source to measure the receiver power of the equipment. This type of measurement equipment is usually large in size and expensive, and requires the transmitter and receiver of the equipment to be measured twice, which makes the test process complicated. Frequent plugging and unplugging of test cables will inevitably produce a series of measurement errors. Therefore, designing a low-cost, compact and portable instrument that can simultaneously measure the transmission and reception of wireless electronic products will greatly simplify the power measurement process, reduce testing costs, and ensure product performance indicators.

[0021] like Figure 1 The figure shows the principle diagram of the transmitter and receiver power measurement scheme commonly used in the industry. When measuring transmitter power, the power meter is directly connected to the port of the device under test, and the transmitter is controlled to output a signal of a specific frequency and power. The power detection chip on the power meter converts the RF signal into a voltage signal, and outputs the power value to the computer after digitization through the analog-to-digital converter. This measured value is the transmit power value of the device under test. When measuring receiver power, the signal source is directly connected to the port of the device under test, and the signal source is controlled to output a signal of a specific frequency and power. The device under test receives the signal at this frequency and completes the measurement. The power value measured by the receiver is the received power value at the port of the device under test.

[0022] Therefore, traditional transmitter and receiver power measurement solutions have the following disadvantages:

[0023] In the traditional power measurement process, due to the different equipment used, the transmitter output power and the receiver input power need to be measured twice. This measurement scheme has the following disadvantages:

[0024] 1) High testing cost: Power testing equipment including power meter (or spectrum analyzer) and signal source are all high-value instrument equipment, which are difficult for wireless electronic product manufacturers to equip or are limited in quantity.

[0025] 2) Low test efficiency: This two-step measurement process for the transmitter and receiver requires manual operation to switch the power meter and signal source, which not only increases the measurement time, but also introduces measurement errors due to improper operation.

[0026] 3) Poor portability: A power meter and signal source test environment is usually fixed in a cabinet or desktop due to its large weight and size, and is difficult to move. This cannot meet the needs of on-site testing and calibration at the customer site.

[0027] In view of the problems existing in the prior art, the present application provides an improved bidirectional power measurement device and power measurement method. The present application fully considers the shortcomings and limitations of traditional power measurement methods and develops a bidirectional power measurement device that can simultaneously measure the power of the device transmitter and receiver. The product integrates a three-port reciprocal power divider at the port, which can route the transmission signal input from the port to the internal power detection chip for power measurement, and can also make the internal integrated signal source output a broadband signal, which is evenly distributed to the power detection chip and the receiver port under test to complete the measurement of the receiver input power. This small bidirectional power meter, which can test both the transmission power and the receiving power of electronic equipment, can greatly improve the efficiency of power testing, reduce test errors, and is easy to carry to support customer on-site testing and calibration.

[0028] The product structure of the bidirectional power measurement device of the present application in actual scenarios is described below in conjunction with the accompanying drawings and embodiments. Figure 2 Schematic diagram of the product structure of the bidirectional power measurement device involved in the actual scenario provided by the embodiment of the present application. Figure 2 As shown, the bidirectional power measurement device may specifically include:

[0029] The bidirectional power measurement device of the present application can be called a bidirectional power meter in actual products. The bidirectional power meter of the present application is composed of a radio frequency connector (N Connector), an attenuator, a splitter, a power detection module, an analog-to-digital conversion module, an electrically adjustable filter, a frequency synthesizer, a TCXO, an FPGA, a power supply and a digital connector. During measurement, the radio frequency connector connects the signal output / input port of the device under test, and the attenuator of the port is used for impedance matching to improve the measurement accuracy. When measuring the transmission power of the device under test, the input signal flows directly to the power detection module through the splitter (blue arrow in the figure). The splitter here is a broadband resistive power division circuit that attenuates the signal by 6dB. The power detection module converts the input power value into a corresponding voltage value, and the analog-to-digital conversion circuit (ADC) samples and outputs it to the FPGA signal for processing, and finally transmits it to the computer via a USB cable to display the result. The FPGA filters and averages the sampled signal multiple times to ensure that the measurement result is stable.

[0030] When measuring the receiving power of the device under test, a broadband frequency synthesizer is integrated inside the power meter. The frequency synthesizer uses a highly stable temperature compensated crystal oscillator (TCXO) as a reference signal and can output a stable wide-band continuous wave signal (for example, 10MHz-15GHz). The output signal will pass through an electrically tunable filter to filter out the harmonic components of the signal and eliminate the influence of harmonics on the measurement accuracy of the power detection module. The signal is split into two equal signals by the splitter, one of which is output to the device under test through the RF connector and the other is input to the power detection module. Since the two signals are exactly equal in size, the signal power value measured by the power detection module is the power value input to the port of the device under test, realizing the equivalent signal source function.

[0031] The contents of the technical solution of the present application are described in detail below with reference to the accompanying drawings and specific embodiments.

[0032] Figure 3 is a structural block diagram of a bidirectional power measurement device provided in an embodiment of the present application. Figure 3 As shown, the bidirectional power measurement device may specifically include:

[0033] The RF connector 301 is used to connect to the signal input port or the signal output port of the device under test to receive the transmission signal of the device under test or provide the receiving signal to the device under test;

[0034] An attenuator 302, connected to the RF connector, for impedance matching the input or output RF signal to reduce the signal strength;

[0035] A splitter 303, connected to the attenuator, is used to split the radio frequency signal into two signals, wherein the first signal path is used to guide the signal to the power detection module, and the second signal path is used to transmit the signal to the device under test or receive the transmission signal of the device under test;

[0036] A power detection module 304, connected to the first signal path of the splitter, for converting the received radio frequency signal into a voltage signal corresponding to the power;

[0037] The analog-to-digital conversion module 305 is connected to the power detection module and is used to convert the voltage signal into a digital signal;

[0038] A frequency synthesizer 306, connected to the second signal path of the splitter, for generating a continuous wave signal within a preset frequency range, and guiding the continuous wave signal to the power detection module and the device under test respectively through the splitter;

[0039] The signal processing module 307 is connected to the analog-to-digital conversion module, and is used to perform filtering processing, multiple average calculations and power value calibration on the digital signal, and output the power measurement result.

[0040] In some embodiments, the attenuator is a broadband impedance matching attenuator, and the attenuation value is a fixed value, which is used to attenuate the radio frequency signal by a preset amplitude to adapt to the input dynamic range of the power detection module.

[0041] Specifically, the attenuator in the bidirectional power measurement device adopts a broadband impedance matching attenuator, whose attenuation value is a fixed value, such as 6dB or 10dB, for attenuating the input or output RF signal by a preset amplitude to adapt the input dynamic range of the power detection module and improve the measurement accuracy.

[0042] The attenuator is directly connected to the RF connector and is located at the front end of the RF signal input or output path to ensure that the RF signal maintains good impedance matching when entering the measurement device, thereby avoiding signal reflection and measurement errors caused by impedance mismatch.

[0043] In some examples, the attenuator is designed to have broadband characteristics, capable of maintaining a stable fixed attenuation value and impedance matching capability within a frequency range of, for example, 10 MHz to 15 GHz:

[0044] Impedance matching: The input and output impedance of the attenuator are designed to be 50 ohms, which is consistent with the RF connector and subsequent modules (such as splitters and power detection modules), reducing reflection losses caused by impedance mismatch and improving signal transmission stability and measurement accuracy.

[0045] Signal attenuation: The attenuator weakens the input high-power signal through a preset fixed attenuation value (for example, 6dB), reducing its intensity to within the safe input range of the power detection module, thereby preventing module damage or measurement deviation caused by excessive power.

[0046] Taking the transmit power measurement as an example, when the device under test outputs the RF signal through the RF connector, the signal is first processed by the attenuator. The specific processing process is as follows:

[0047] If the transmission power of the device under test is +30dBm, the attenuator reduces the signal strength by a fixed value (e.g. 6dB), and the attenuated signal power is +24dBm, which enters the subsequent splitter and power detection module;

[0048] Within the attenuated power range, the power detection module can accurately detect the actual power of the signal and avoid detection distortion caused by excessive signal strength.

[0049] Similarly, when measuring received power, the attenuator can also perform impedance matching on the signal in the receiving path and attenuate unnecessary strong interference signals, thereby improving the overall accuracy and stability of the power measurement device.

[0050] The attenuator in this embodiment is suitable for scenarios with a wide frequency range and a large power range, such as transmitter power measurement or receiver signal input measurement of wireless communication equipment. In this scenario, the broadband impedance matching attenuator can effectively reduce signal reflection, improve measurement accuracy, and provide adaptive input signal conditions for the subsequent power detection module.

[0051] Through the structural design of the above-mentioned embodiment, the device can provide stable power measurement results within the frequency range, while greatly reducing the measurement errors caused by signal reflection and excessive input power, providing reliable support for the calibration and performance testing of wireless communication equipment.

[0052] In some embodiments, the splitter is a broadband resistive power divider, which is used to equally distribute the radio frequency signal within the entire frequency band so that the signal power on the first signal path is equal to that on the second signal path.

[0053] Specifically, the splitter is located after the attenuator, and is connected to the attenuator and the subsequent power detection module and the device under test. The input end of the splitter is connected to the output end of the attenuator, and its two output ends are respectively connected to the first signal path of the power detection module and the second signal path of the RF connector, thereby forming two signal paths with equal power distribution.

[0054] In some examples, the splitter is a broadband resistive power divider having the following characteristics:

[0055] Broadband features: The splitter can operate in the frequency range of 10MHz to 15GHz, ensuring distribution stability across the entire frequency band.

[0056] The split ratio is 1:1: The splitter splits the input RF signal into two paths, with equal signal power in each path. During the splitting process, the power of each signal is attenuated by 6 dB to maintain equal power distribution while reducing the impact of the splitter on signal quality.

[0057] Impedance matching: The input and output port impedances of the splitter are designed to be 50 ohms, which is consistent with the front and rear modules (attenuator, power detection module, and device under test) to avoid signal reflection and power loss caused by impedance mismatch.

[0058] For example, taking the transmission power measurement as an example, when the attenuated RF signal enters the splitter, the splitter divides the input signal into two paths, one of which (the first signal path) is transmitted to the power detection module to measure the actual signal power; the other signal (the second signal path) is transmitted to the RF connector for subsequent signal processing or output with external equipment.

[0059] For received power measurement, when the continuous wave signal generated by the frequency synthesizer is processed by the electronically tunable filter and enters the splitter, the splitter divides the signal into two paths, one of which (the first signal path) is transmitted to the power detection module for measuring the reference power value; the other signal (the second signal path) is transmitted to the input port of the device under test through the RF connector for receiver power testing.

[0060] Through the equal power distribution characteristics of the splitter, the signal power value measured by the power detection module can accurately reflect the actual power of the input or output port of the device under test, thereby improving the accuracy and stability of power measurement.

[0061] In some example scenarios, the broadband resistor power divider is suitable for multi-band testing requirements of wireless communication equipment, especially in power measurement scenarios in high frequency bands (such as 5G communications) or wide frequency bands, and can effectively achieve stable signal distribution and ensure measurement accuracy. By reducing signal distortion and power fluctuations, this embodiment can provide reliable hardware support for the calibration of the transmission and reception performance of wireless communication equipment.

[0062] Through the structural design of the above-mentioned embodiment, the splitter can significantly improve the overall performance of the bidirectional power measurement device and ensure stable power distribution and measurement in a wide frequency band. The splitter achieves stable 1:1 power distribution in a wide frequency band, reducing signal attenuation and reflection loss; it adopts a resistive design with a simple structure, suitable for miniaturized portable devices; it is suitable for the transmission and reception power measurement scenarios of various radio frequency devices.

[0063] In some embodiments, the power detection module includes a power detector and a signal amplifier, wherein the power detector is used to convert the power of the RF signal into a voltage signal corresponding to the power size; the signal amplifier is used to amplify the voltage signal output by the power detector to adapt to the input requirements of the analog-to-digital conversion module.

[0064] Specifically, the power detection module includes a power detector, a signal amplifier and a filter circuit, which are used to convert the power of the RF signal into a voltage signal, and amplify and filter the voltage signal to improve the measurement accuracy and adapt to the input requirements of the analog-to-digital conversion module.

[0065] The power detector, also known as the power detection chip, is the core component of the power detection module. Its function is to convert the power of the input RF signal into a voltage signal proportional to the power.

[0066] The power detector is connected to the first signal path of the splitter and receives the RF signal transmitted by the splitter. The power detector converts the RF signal power into a DC voltage signal through an internal RF-to-DC conversion circuit, and the amplitude of the voltage signal is linearly or logarithmically related to the input power value (for example, the output voltage is a logarithmic function of the input power).

[0067] Furthermore, the signal amplifier, also called an amplifier circuit, is used to amplify the voltage signal output by the power detector to match the input dynamic range of the analog-to-digital conversion module, thereby ensuring that the signal can be accurately sampled.

[0068] The amplifier circuit can accept the low amplitude voltage signal output by the power detector, such as a few millivolts (mV) to several hundred millivolts (mV). According to the input requirements of the analog-to-digital conversion module, the gain of the signal amplifier can be configured, for example, the signal voltage output by the power detector is amplified to the range of 0-3.3V to match the input range of a typical ADC. The amplifier circuit adopts a low noise amplifier design to ensure that the additional noise introduced during the signal amplification process is minimized.

[0069] In order to further improve the power detection accuracy, a filter circuit is added to the power detection module to filter out high-frequency interference components and environmental noise introduced during the power detection process.

[0070] The filter circuit is designed as a low-pass filter, which can effectively remove high-frequency interference signals and retain only low-frequency components related to the input power (such as DC voltage signals). The cutoff frequency of the filter is designed according to the maximum operating frequency of the RF signal and the signal processing speed requirements, such as 1kHz or lower. The filter circuit is located between the power detector and the signal amplifier to ensure that the voltage signal after detection is cleared of noise before amplification.

[0071] Taking transmit power measurement as an example, when the splitter guides the RF signal to the power detection module, the power detector receives the RF signal transmitted by the splitter and converts its power value into a DC voltage signal, for example, 0.1mV corresponds to -30dBm power and 100mV corresponds to 0dBm power.

[0072] The filter circuit performs low-pass filtering on the DC voltage signal to eliminate high-frequency interference and ensure the purity of the signal. The signal amplifier amplifies the filtered voltage signal and adjusts its voltage value to the optimal input range of the analog-to-digital conversion module, for example, amplifying 100mV to 1V.

[0073] The analog-to-digital conversion module samples and digitizes the amplified signal, and hands it over to the signal processing module to complete the calculation and display of the transmission power.

[0074] For example, in an example scenario, the power detection module can be widely used in the transmission power and reception power test scenarios of wireless communication devices, and is particularly suitable for multi-band wide-range power measurement requirements. By adopting a combination of low-noise amplifier and filter circuit design, the module can provide high-precision power measurement results in a strong interference environment.

[0075] Through the structural design of the present embodiment described above, and through the coordinated design of the power detector, signal amplifier and filter circuit, the power detection module can achieve accurate measurement of the RF signal power and provide high-quality input conditions for subsequent digital signal processing.

[0076] In some embodiments, the frequency synthesizer uses a temperature compensated crystal oscillator as a reference signal source. The frequency synthesizer is used to generate a continuous wave signal with a wide frequency band and supports an adjustable frequency step function for calibration and testing of received power measurements at different frequencies.

[0077] Specifically, the frequency synthesizer uses a temperature compensated crystal oscillator (TCXO) as a reference signal source, can generate a continuous wave signal in a wide frequency band, and supports a frequency step adjustable function for realizing the calibration and testing of the received power measurement.

[0078] Temperature Compensated Crystal Oscillator (TCXO): used as a reference signal source for frequency synthesizers, providing a high-stability, low-drift reference frequency signal. The frequency stability of TCXO can reach ±0.1ppm, ensuring high-precision output of the frequency synthesizer over a wide frequency range.

[0079] Frequency generation module: includes direct digital frequency synthesis (DDS) and phase-locked loop (PLL) circuits, which are used to generate continuous wave signals within a specified frequency range based on the reference signal of the TCXO. This module can cover the frequency range of 10MHz to 15GHz to meet the needs of multi-band testing.

[0080] Control module: Configure the frequency stepping function to accurately adjust the output frequency of the frequency synthesizer through external control signals or preset programs to achieve multi-frequency point calibration and testing of the received power.

[0081] During the received power measurement, the frequency synthesizer generates a continuous wave signal in the range of 10MHz to 15GHz according to the test requirements. Through the phase accumulator and digital-to-analog converter (DAC) of the DDS circuit, the frequency synthesizer can provide high-resolution frequency adjustment capabilities, such as a minimum frequency step of 1kHz.

[0082] The frequency synthesizer supports the frequency step function. Users can set the step value of multiple frequency points through an external trigger signal or list measurement mode, for example, testing in 10MHz steps within the range of 10MHz to 1GHz.

[0083] The reference signal provided by TCXO has excellent temperature stability and frequency stability. The frequency synthesizer can maintain high accuracy and low phase noise of signal output in complex test environments, ensuring the reliability of received power measurement.

[0084] The following are typical implementation steps of a frequency synthesizer in received power measurement:

[0085] First, the user sets the test frequency range through the control module, such as 10 MHz to 1 GHz, and defines the step value of each frequency point (such as 10 MHz).

[0086] Secondly, the frequency synthesizer uses the TCXO as a reference to generate a continuous wave signal according to the set parameters; the output signal is filtered out by an electronically tunable filter to remove harmonic components to ensure the purity of the signal spectrum.

[0087] Next, the generated signal is divided into two paths through a splitter, one path enters the power detection module for measuring the reference power value, and the other path is transmitted to the signal input port of the device under test for calibration and testing of the received power.

[0088] Then, the frequency synthesizer adjusts the output frequency according to the preset step value, repeats the above signal generation and distribution process, and completes the continuous power measurement of multiple frequency points.

[0089] Through the wide frequency band coverage and frequency stepping function of the frequency synthesizer, this device can achieve high-precision and multi-frequency calibration in received power measurement, and has the following advantages:

[0090] High precision: TCXO provides a highly stable reference signal to minimize the output frequency deviation of the frequency synthesizer and ensure the reliability of the received power measurement results.

[0091] Flexibility: The frequency step function allows users to freely set the frequency range and step value according to test requirements, which is suitable for calibration and testing scenarios of multi-band communication equipment.

[0092] Efficiency: By pre-storing the frequency list and using the automatic stepping mode, multiple frequency points can be measured in a single test, significantly improving test efficiency.

[0093] In some embodiments, the signal processing module includes a data filtering unit, an average calculation unit, a calibration unit and an output unit, wherein:

[0094] A data filtering unit, used for performing low-pass filtering on the digital signal output by the analog-to-digital conversion module;

[0095] An average calculation unit, used for performing multiple average calculations on the filtered digital signal;

[0096] A calibration unit, used for calibrating the power measurement result according to a preset power calibration value;

[0097] The output unit is used to output the calibrated power measurement value to an external device through a digital interface module.

[0098] Specifically, the signal processing module includes a data filtering unit, an average calculation unit, a calibration unit and an output unit, which are used to filter, perform multiple average calculations, and perform power calibration on the digital signal output by the analog-to-digital conversion module, and output the calibrated power measurement result to an external device.

[0099] The data filtering unit is used to perform low-pass filtering on the digital signal output by the analog-to-digital conversion module to eliminate high-frequency noise and interference signals and improve the purity and stability of the power measurement results.

[0100] Low-pass filter design: The data filtering unit implements the digital low-pass filter function. The cutoff frequency of the filter is set according to the frequency range of the measurement signal, such as 100 Hz to 1 kHz, to effectively filter out the high-frequency noise generated during the analog-to-digital conversion process.

[0101] Filtering algorithm: Use finite impulse response (FIR) or infinite impulse response (IIR) filtering algorithm to achieve real-time filtering through FPGA or DSP (digital signal processor) to ensure the timeliness of signal processing.

[0102] Furthermore, the average calculation unit is used to perform multiple average calculations on the filtered digital signal to further improve the accuracy and stability of power measurement.

[0103] Averaging method: perform arithmetic averaging on the filtered signal sampled N times continuously. The N value can be set according to the measurement requirements, such as N=8 or 16, to reduce the impact of random noise on the measurement results.

[0104] Real-time processing: The average calculation unit processes the filtered data in a sliding window manner, that is, the data in the calculation window is dynamically updated at each new sample, thereby achieving real-time update of the power measurement results.

[0105] Furthermore, the calibration unit is used to calibrate and correct the power measurement result to ensure that the measured power value accurately reflects the actual transmission power or reception power of the device under test.

[0106] Power calibration: The calibration unit stores preset power calibration values, such as the measurement error curve calibrated by a standard signal source or a power meter at the factory.

[0107] Calibration method: According to the measurement frequency and power range, the corresponding correction factor is extracted from the calibration curve, and the measurement result is corrected. For example, the calibrated power value can be expressed as: P calibration = P measurement + ΔP correction, where ΔP correction is the calibration factor.

[0108] Furthermore, the output unit is used to output the calibrated power measurement value to an external device through the digital interface module for display, recording or further processing.

[0109] Output mode: Supports multiple interface protocols, such as outputting power values ​​to a computer via a USB interface, or transmitting measurement results to an automatic test system via a TTL level trigger interface.

[0110] Data format: The output unit outputs the calibrated power measurement value in digital form, for example, in dBm, and can also add auxiliary information such as measurement frequency and measurement timestamp.

[0111] Taking the received power measurement as an example, the specific workflow of the signal processing module is as follows:

[0112] First, the analog-to-digital conversion module converts the voltage signal output by the power detection module into a digital signal and transmits it to the signal processing module;

[0113] Secondly, the data filtering unit performs low-pass filtering on the digital signal to remove high-frequency interference components;

[0114] Next, the average calculation unit performs multiple average calculations on the filtered signal and outputs a stable power measurement result;

[0115] Then, the calibration unit corrects the measurement result according to the power calibration value to ensure that the output power value reflects the actual received power;

[0116] Finally, the output unit transmits the calibrated power measurement value to the computer through the USB interface, displaying the final measurement result.

[0117] Through the structural design of the above-mentioned embodiment, the accuracy and stability of the power measurement results are significantly improved through data filtering, averaging calculation and calibration processing; the module design supports real-time data processing and can quickly output power measurement results in dynamic test scenarios; it supports multiple interface protocols to meet the different needs of laboratory testing and field measurement.

[0118] In some embodiments, the signal processing module supports a list measurement mode, wherein the signal processing module pre-stores a frequency list containing multiple frequency points; the frequency synthesizer generates a continuous wave signal of the corresponding frequency according to the frequency list, and completes the power measurement of all frequency points in sequence.

[0119] Specifically, the bidirectional power measurement device supports list measurement mode, which pre-stores a frequency list of multiple frequency points through the signal processing module, combines the frequency synthesizer to generate continuous wave signals of corresponding frequencies one by one, realizes multi-frequency power measurement, and outputs the power measurement results of all frequency points at one time.

[0120] Signal processing module: pre-stores a frequency list set by the user, which contains multiple frequency points that need to be measured. For example, the list may contain frequency points every 10 MHz in the range of 10 MHz to 1 GHz.

[0121] Frequency synthesizer: Generates continuous wave signals of corresponding frequencies point by point according to the frequency points set in the frequency list, and outputs the signals to the splitter.

[0122] Trigger signal interface: Start the list measurement mode through an external trigger signal. The trigger signal can be a user key operation, a TTL level signal, or a control command received through the communication interface.

[0123] Data output unit: After the measurement is completed, the signal processing module outputs the power measurement results of all frequency points to an external device at one time, such as a computer or display terminal.

[0124] In some examples, the user writes the parameters of multiple frequency points to be measured into the storage unit of the signal processing module through the setting interface to form a frequency list. For example: frequency list = [10MHz, 20MHz, ..., 1GHz].

[0125] After receiving the trigger signal, the signal processing module starts the list measurement mode and controls the frequency synthesizer to output continuous wave signals of corresponding frequencies one by one according to the frequency list.

[0126] For each measurement, the frequency synthesizer outputs the signal of the current frequency point to the splitter; the splitter transmits the signal to the power detection module and the device under test respectively; the power detection module measures the reference power value of the signal, and the signal processing module filters, averages and calibrates the measurement results and then records the power value.

[0127] After completing the measurement of the current frequency point, the signal processing module instructs the frequency synthesizer to output the signal of the next frequency point, and repeats the above measurement process until the measurement of all frequency points is completed.

[0128] After the measurement is completed, the signal processing module packages the power measurement results of all frequency points and outputs them through the digital interface module, for example, transmitting them to a computer through a USB interface and storing them in a CSV file format.

[0129] Through the structural design of the present embodiment, the list measurement mode can complete the power measurement of all frequency points with one trigger, avoiding manual operation of each point by the user, greatly improving the measurement efficiency. The measurement results of each frequency point are filtered, averaged and calibrated by the signal processing module to ensure the accuracy and consistency of the output power results. The frequency list can be freely set according to user needs, adapt to various test needs, and support frequency measurement within a wide frequency band.

[0130] In some embodiments, the apparatus further comprises:

[0131] The electronically tunable filter is arranged between the frequency synthesizer and the splitter, and is used to filter the continuous wave signal output by the frequency synthesizer to filter out the harmonic components in the continuous wave signal;

[0132] A digital interface module, connected to the signal processing module, for receiving an external trigger signal or transmitting a power measurement result through a data communication interface;

[0133] The power module is used to provide working power for the bidirectional power measurement device.

[0134] Specifically, the bidirectional power measurement device further includes an electrically tunable filter, a digital interface module and a power supply module, which are respectively used to filter out harmonic components in the output signal of the frequency synthesizer, support external signal interaction and power supply support.

[0135] The electronically tunable filter is arranged between the frequency synthesizer and the splitter, and is used to filter the continuous wave signal output by the frequency synthesizer to filter out the harmonic components in the signal and improve the spectral purity of the signal.

[0136] The electronically tunable filter is designed as a tunable filter, whose center frequency is consistent with the frequency of the output signal of the frequency synthesizer, and can be dynamically adjusted to meet the signal filtering requirements within a wide frequency band (for example, 10MHz to 15GHz).

[0137] The passband width of the filter can be set according to working requirements, such as 1 MHz to 10 MHz, to achieve a balance between signal integrity and harmonic suppression effects.

[0138] In some examples, when a frequency synthesizer generates a continuous wave signal, the signal first enters an electronically tunable filter for filtering; the filter suppresses harmonic components and broadband interference signals and retains only the main signal of the target frequency, thereby providing a high-purity input signal for subsequent splitters and power detection modules.

[0139] The harmonic suppression capability of the filter can reach more than 30dB at the second and third harmonics, ensuring the accuracy of high-frequency signal measurement.

[0140] Furthermore, the digital interface module is used to support signal interaction between the apparatus and external devices, including receiving external trigger signals and transmitting power measurement results.

[0141] USB interface: used to transfer power measurement results to a computer or other data processing device, supporting standard communication protocols (such as USB 2.0 or 3.0).

[0142] External trigger interface: uses TTL level interface to receive external control signals and trigger power measurement operations.

[0143] Users can start the measurement mode through external trigger signals, such as manually triggering a single measurement or automatically triggering continuous measurements in list mode;

[0144] After the measurement is completed, the digital interface module outputs the result in digital form, such as a CSV format file, including the measured frequency, power value and other parameter information.

[0145] Furthermore, the power supply module is used to provide a stable working power supply for all components of the bidirectional power measurement device, and supports multiple power supply modes.

[0146] For example, it supports both DC power supply (such as 12V DC) and USB power supply to meet the needs of laboratory testing and portable field testing;

[0147] The power module integrates voltage conversion and voltage stabilization circuits, which can provide the required multi-channel voltages (such as 3.3V, 5V) for core components such as power detection modules and frequency synthesizers.

[0148] It is also equipped with overvoltage, overcurrent and short-circuit protection circuits to ensure the safety and stability of the device under extreme conditions; it provides a power status indication function to facilitate users to monitor the power supply status of the device in real time.

[0149] Through the structural design of the present embodiment described above, the performance and applicability of the device are further improved by adding an electrically tunable filter, a digital interface module and a power module. The electrically tunable filter effectively suppresses the harmonic components in the output signal of the frequency synthesizer, ensuring the purity of the input power signal, thereby improving the accuracy and reliability of power measurement. The digital interface module supports a variety of triggering and communication methods, and is adapted to different test scenarios, including automated test environments and on-site manual operations. The multiple power supply methods and voltage stabilization design of the power module make the device suitable for both laboratory fixed testing and on-site portable testing, expanding the application range of the device.

[0150] In some embodiments, the digital interface module includes a USB interface and an external trigger interface, wherein the USB interface is used to transmit the power measurement result to an external device; the external trigger interface is used to receive a trigger signal of a TTL level to control the start of the power measurement process.

[0151] Specifically, the USB interface is used to transmit the calibrated power measurement results to an external device (such as a computer, a display terminal or an automatic test system), supporting data transmission and device communication functions.

[0152] After the measurement is completed, the signal processing module transmits the calibrated power measurement results in the form of digital signals to the USB interface; the USB interface communicates with external devices and supports standard communication protocols (such as USB 2.0 or 3.0) to ensure fast and stable data transmission.

[0153] The output power measurement results include frequency, measured power value, calibration information and timestamp, which can be stored in CSV or JSON format files to facilitate subsequent data processing and analysis.

[0154] The USB interface is designed in plug-and-play mode, allowing users to achieve fast connection and data transmission without installing complex drivers.

[0155] The external trigger interface is used to receive a TTL level trigger signal to control the start of the power measurement process, supporting both manual and automatic test modes.

[0156] The user generates a TTL signal through an external trigger device (such as a button or switch), and the trigger interface starts a single measurement process after receiving the signal.

[0157] In addition, in the automated test scenario, the trigger interface is connected to the test management system to achieve continuous or timed triggering through TTL signals, supporting list measurement mode (list mode) or single-point measurement mode.

[0158] In some examples, the interface characteristics are as follows:

[0159] Input voltage range: 0-5V TTL level;

[0160] Trigger response time: typically less than 1ms, ensuring a quick start of the measurement process.

[0161] In actual use, the workflow of the digital interface module is as follows:

[0162] First, after completing the power measurement, the signal processing module sends the power value and related parameters to the USB interface.

[0163] The USB interface then transfers the data to a computer, where the user can view the measurement results in real time through the software interface or save the data as a file for subsequent analysis.

[0164] Then, the user presses the external trigger switch, and the trigger interface receives a TTL signal to start the power measurement.

[0165] Finally, in the list measurement mode, the trigger interface receives a continuous trigger signal, the device completes the measurement of all frequency points in the frequency list in turn, and transmits all measurement results to the external device at one time through the USB interface.

[0166] Through the structural design of the above embodiment, the USB interface supports high-speed and stable data transmission, ensuring that the measurement results can be displayed and stored in real time, improving the user experience. The external trigger interface supports multiple triggering modes and can be seamlessly connected to the automated test system to achieve automatic control of complex measurement processes. The USB interface is simple in design and can be used without additional configuration, which enhances the convenience and compatibility of the device.

[0167] The above embodiments have described the contents of the bidirectional power measurement device of the present application in detail. The following describes in detail the implementation process of the power measurement method based on the bidirectional power measurement device in combination with the bidirectional power measurement device provided in the above embodiments.

[0168] Figure 4 is a flow chart of a method for measuring transmit power provided in an embodiment of the present application, Figure 5 FIG. 1 is a flow chart of the received power measurement method provided in the embodiment of the present application. Figure 4 and Figure 5 As shown, the power measurement method may specifically include:

[0169] Connecting a signal input port or a signal output port of the device under test to the bidirectional power measurement device via a radio frequency connector;

[0170] When measuring the transmission power, receiving the radio frequency signal output by the device under test, and performing impedance matching and attenuation on the radio frequency signal by using an attenuator;

[0171] The attenuated RF signal is divided into two paths by a splitter, one of which is converted into a voltage signal corresponding to the power by a power detection module, and the other signal path is used to transmit to the device under test;

[0172] The voltage signal is converted into a digital signal by using an analog-to-digital conversion module, and the signal processing module performs filtering processing, multiple average calculations and power value calibration, and outputs a transmission power measurement result;

[0173] When measuring the received power, a frequency synthesizer is used to generate a continuous wave signal within a preset frequency range, and an electrically tunable filter is used to filter out harmonics of the continuous wave signal;

[0174] The continuous wave signal is divided into two paths by using a splitter, wherein one signal path is transmitted to the signal input port of the device under test, and the other signal path is measured by a power detection module for a reference power value;

[0175] The reference power value is processed by using an analog-to-digital conversion module and a signal processing module, the actual input power is recorded, and the received power measurement result of the device under test is output according to the power calibration value.

[0176] like Figure 4 As shown, Figure 4 The process of the transmit power measurement method is shown below. Figure 4 The specific steps of the transmit power measurement method are described in detail:

[0177] First, the signal output end of the device under test is connected to the power meter through an RF connector to ensure that the signal can smoothly enter the power meter for measurement.

[0178] Then, the device under test outputs a signal of a specified frequency f0 according to the measurement requirements. The frequency f0 is preset by the user and can cover any point within the frequency range to be measured.

[0179] Then, after the input signal passes through the attenuator and splitter, one signal is directed to the power detection module; the power detection module converts the RF signal into a voltage signal corresponding to the power value; the analog-to-digital conversion module (ADC) digitizes the voltage signal and transmits it to the signal processing module.

[0180] Furthermore, the signal processing module filters the digitized power signal and performs multiple average calculations to obtain a stable power measurement value P0; the measurement value P0 is recorded and associated with the corresponding frequency f0.

[0181] Furthermore, it is determined whether the current measurement frequency is the last frequency point fn in the frequency list. If the measurement of all frequency points is not completed, the frequency of the transmitted signal is adjusted to the next frequency f+Δf according to the frequency step value Δf, and the above steps are repeated to continue the measurement; if the measurement of all frequency points is completed, the final transmit power measurement value Pn is recorded.

[0182] Furthermore, after the measurement is completed, the transmit power measurement results of all frequency points are packaged and transmitted to an external device through a digital interface module (such as a USB interface), and the measurement results are output at one time.

[0183] like Figure 5 As shown, Figure 5The process of the received power measurement method is shown below. Figure 5 The specific steps of the received power measurement method are described in detail:

[0184] First, the signal input terminal of the device under test is connected to the power meter through an RF connector to ensure that the signal can be transmitted from the power meter to the device under test.

[0185] Next, the built-in frequency synthesizer of the power meter outputs a continuous wave signal of the specified frequency f0; after the signal is processed by the electronically tunable filter, it is divided into two paths by the splitter: one path enters the power detection module for measuring the reference power value P0; the other path is transmitted to the device under test through the RF connector for receiving power testing.

[0186] Then, the power detection module converts the signal power output by the splitter into a voltage signal and performs digital processing through the analog-to-digital conversion module (ADC); the signal processing module filters the digitized signal and performs multiple average calculations to obtain a stable reference power value P0.

[0187] Furthermore, the device under test records the power value Q0 received by it, which reflects the receiving characteristics of the signal when passing through the port of the device under test.

[0188] The signal processing module corrects the received power Q0 of the device under test according to the power calibration value, and calculates the final received power result: ΔP=Pn-Qn, where Pn is the reference power value and Qn is the received power of the device under test.

[0189] Furthermore, it is determined whether the current measurement frequency is the last frequency point fn in the frequency list. If the measurement of all frequency points is not completed, the frequency of the signal source is adjusted to the next frequency f+Δf according to the frequency step value Δf, and the above steps are repeated to continue the measurement; if the measurement of all frequency points is completed, the final received power measurement value is recorded.

[0190] Furthermore, after the measurement is completed, the received power measurement results of all frequency points are packaged and output to the external device through the digital interface module.

[0191] In the above-mentioned transmission and reception power measurement process, the device supports list measurement mode (list mode) to further improve the measurement efficiency.

[0192] The user can store a frequency list containing multiple frequency points in the signal processing module in advance, such as [10MHz, 20MHz, ..., 1GHz].

[0193] After receiving a trigger signal (such as an external TTL level signal), the device automatically completes the measurement point by point in the order of the frequency list.

[0194] After completing the measurement of all frequency points, the device outputs all measurement results to the external device at one time, reducing user waiting time and operation steps.

[0195] The user can select power trigger mode or external trigger mode. For example, power trigger: the power detection module automatically triggers the measurement after detecting the signal input; external trigger: the external device (such as the test management system) sends a TTL signal to start the measurement.

[0196] Based on the technical solution provided by the above embodiment, the embodiment of the present application has at least the following technical effects:

[0197] 1) By integrating the broadband signal source into the power meter, the broadband signal required for the receiver power measurement of the device under test can be generated. And through the broadband splitter design, both the input and output signals can be measured by the power detection circuit, thus realizing the bidirectional power measurement function of a power meter device and saving test costs.

[0198] 2) This solution supports simultaneous bidirectional power measurement, which reduces the wiring operation between the device under test and the measuring instrument. This not only saves measurement time and improves test efficiency, but also avoids measurement errors introduced by frequent manual operations.

[0199] 3) Compared with the two instruments of power meter and signal source required by the traditional power measurement solution, this invented product has higher integration, is only the size of a palm, has good portability, and is convenient for power measurement and calibration at the customer's site.

[0200] Therefore, in summary, the present application greatly optimizes the efficiency, accuracy, portability and cost of power measurement.

[0201] It should be understood that the size of the serial numbers of the steps in the above embodiments does not mean the order of execution. The execution order of each process should be determined by its function and internal logic, and should not constitute any limitation on the implementation process of the embodiments of the present application.

[0202] Figure 6 Schematic diagram of the structure of the electronic device 6 provided in the embodiment of the present application. Figure 6 As shown, the electronic device 6 of this embodiment includes: a processor 601, a memory 602, and a computer program 603 stored in the memory 602 and executable on the processor 601. When the processor 601 executes the computer program 603, the steps in the above-mentioned various method embodiments are implemented. Alternatively, when the processor 601 executes the computer program 603, the functions of each module / unit in the above-mentioned various device embodiments are implemented.

[0203] Exemplarily, the computer program 603 may be divided into one or more modules / units, which are stored in the memory 602 and executed by the processor 601 to complete the present application. The one or more modules / units may be a series of computer program instruction segments capable of completing specific functions, which are used to describe the execution process of the computer program 603 in the electronic device 6.

[0204] The electronic device 6 may be a desktop computer, a notebook, a PDA, a cloud server, or other electronic device. The electronic device 6 may include, but is not limited to, a processor 601 and a memory 602. Those skilled in the art will appreciate that Figure 6 It is only an example of the electronic device 6 and does not constitute a limitation of the electronic device 6. It may include more or fewer components than shown in the figure, or a combination of certain components, or different components. For example, the electronic device may also include input and output devices, network access devices, buses, etc.

[0205] The processor 601 may be a central processing unit (CPU), or other general-purpose processors, digital signal processors (DSP), application-specific integrated circuits (ASIC), field-programmable gate arrays (FPGA), or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components, etc. A general-purpose processor may be a microprocessor or the processor may be any conventional processor, etc.

[0206] The memory 602 may be an internal storage unit of the electronic device 6, for example, a hard disk or memory of the electronic device 6. The memory 602 may also be an external storage device of the electronic device 6, for example, a plug-in hard disk, a smart memory card (Smart Media Card, SMC), a secure digital (Secure Digital, SD) card, a flash card (Flash Card), etc. equipped on the electronic device 6. Further, the memory 602 may also include both an internal storage unit of the electronic device 6 and an external storage device. The memory 602 is used to store computer programs and other programs and data required by the electronic device. The memory 602 may also be used to temporarily store data that has been output or is to be output.

[0207] The technicians in the relevant field can clearly understand that for the convenience and simplicity of description, only the division of the above-mentioned functional units and modules is used as an example for illustration. In practical applications, the above-mentioned function allocation can be completed by different functional units and modules as needed, that is, the internal structure of the device can be divided into different functional units or modules to complete all or part of the functions described above. The functional units and modules in the embodiment can be integrated in a processing unit, or each unit can exist physically separately, or two or more units can be integrated in one unit. The above-mentioned integrated unit can be implemented in the form of hardware or in the form of software functional units. In addition, the specific names of the functional units and modules are only for the convenience of distinguishing each other, and are not used to limit the scope of protection of this application. The specific working process of the units and modules in the above-mentioned system can refer to the corresponding process in the aforementioned method embodiment, which will not be repeated here.

[0208] In the above embodiments, the description of each embodiment has its own emphasis. For parts that are not described or recorded in detail in a certain embodiment, reference can be made to the relevant descriptions of other embodiments.

[0209] Those of ordinary skill in the art will appreciate that the units and algorithm steps of each example described in conjunction with the embodiments disclosed herein can be implemented in electronic hardware, or a combination of computer software and electronic hardware. Whether these functions are performed in hardware or software depends on the specific application and design constraints of the technical solution. Professional and technical personnel can use different methods to implement the described functions for each specific application, but such implementation should not be considered to be beyond the scope of this application.

[0210] In the embodiments provided in the present application, it should be understood that the disclosed devices / computer equipment and methods can be implemented in other ways. For example, the device / computer equipment embodiments described above are only schematic. For example, the division of modules or units is only a logical function division. There may be other division methods in actual implementation. Multiple units or components can be combined or integrated into another system, or some features can be ignored or not executed. Another point is that the mutual coupling or direct coupling or communication connection shown or discussed can be through some interfaces, indirect coupling or communication connection of devices or units, which can be electrical, mechanical or other forms.

[0211] The units described as separate components may or may not be physically separated, and the components shown as units may or may not be physical units, that is, they may be located in one place or distributed on multiple network units. Some or all of the units may be selected according to actual needs to achieve the purpose of the solution of this embodiment.

[0212] In addition, each functional unit in each embodiment of the present application may be integrated into one processing unit, or each unit may exist physically separately, or two or more units may be integrated into one unit. The above-mentioned integrated unit may be implemented in the form of hardware or in the form of software functional units.

[0213] If the integrated module / unit is implemented in the form of a software functional unit and sold or used as an independent product, it can be stored in a computer-readable storage medium. Based on this understanding, the present application implements all or part of the processes in the above-mentioned embodiment method, and can also be completed by instructing the relevant hardware through a computer program. The computer program can be stored in a computer-readable storage medium, and the computer program can implement the steps of the above-mentioned various method embodiments when executed by the processor. The computer program may include computer program code, which may be in source code form, object code form, executable file or some intermediate form. Computer-readable media may include: any entity or device capable of carrying computer program code, recording medium, U disk, mobile hard disk, disk, optical disk, computer memory, read-only memory (ROM), random access memory (RAM), electric carrier signal, telecommunication signal and software distribution medium, etc.

[0214] The above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit them. Although the present application has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. These modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present application, and should all be included in the protection scope of the present application.

Claims

1. A bidirectional power measurement device, characterized in that: include: A radio frequency connector, used to connect to a signal input port or a signal output port of a device under test to receive a transmission signal from the device under test or to provide a reception signal to the device under test; an attenuator, connected to the RF connector, for performing impedance matching on an input or output RF signal to reduce signal strength; A splitter, connected to the attenuator, used to split the radio frequency signal into two signals, wherein the first signal path is used to guide the signal to the power detection module, and the second signal path is used to transmit the signal to the device under test or receive the transmission signal of the device under test; a power detection module, connected to the first signal path of the splitter, and configured to convert the received radio frequency signal into a voltage signal corresponding to the power; an analog-to-digital conversion module, connected to the power detection module, and configured to convert the voltage signal into a digital signal; a frequency synthesizer connected to the second signal path of the splitter, for generating a continuous wave signal within a preset frequency range, and guiding the continuous wave signal to the power detection module and the device under test respectively through the splitter; The signal processing module is connected to the analog-to-digital conversion module and is used to perform filtering processing, multiple average calculations and power value calibration on the digital signal, and output a power measurement result.

2. The bidirectional power measurement device according to claim 1, characterized in that: The attenuator is a broadband impedance matching attenuator, and the attenuation value is a fixed value, which is used to attenuate the radio frequency signal by a preset amplitude to adapt to the input dynamic range of the power detection module.

3. The bidirectional power measurement device according to claim 1, characterized in that: The splitter is a broadband resistive power divider, which is used to equally distribute the radio frequency signal within the entire frequency band so that the signal power on the first signal path is equal to that on the second signal path.

4. The bidirectional power measurement device according to claim 1, characterized in that: The power detection module includes a power detector and a signal amplifier, wherein the power detector is used to convert the power of the radio frequency signal into a voltage signal corresponding to the power size; the signal amplifier is used to amplify the voltage signal output by the power detector to adapt to the input requirements of the analog-to-digital conversion module.

5. The bidirectional power measurement device according to claim 1, characterized in that: The frequency synthesizer uses a temperature compensated crystal oscillator as a reference signal source. The frequency synthesizer is used to generate a continuous wave signal with a wide frequency band and supports a frequency step adjustable function, and is used for calibration and testing of received power measurement at different frequencies.

6. The bidirectional power measurement device according to claim 1, characterized in that: The signal processing module includes a data filtering unit, an average calculation unit, a calibration unit and an output unit, wherein: The data filtering unit is used to perform low-pass filtering on the digital signal output by the analog-to-digital conversion module; The average calculation unit is used to perform multiple average calculations on the filtered digital signal; The calibration unit is used to calibrate the power measurement result according to a preset power calibration value; The output unit is used to output the calibrated power measurement value to an external device through the digital interface module.

7. The bidirectional power measurement device according to claim 6, characterized in that: The signal processing module supports a list measurement mode, wherein the signal processing module pre-stores a frequency list containing multiple frequency points; the frequency synthesizer generates a continuous wave signal of a corresponding frequency according to the frequency list, and sequentially completes power measurement of all frequency points.

8. The bidirectional power measurement device according to claim 1, characterized in that: Also includes: An electrically tunable filter, arranged between the frequency synthesizer and the splitter, for filtering the continuous wave signal output by the frequency synthesizer to filter out harmonic components in the continuous wave signal; A digital interface module, connected to the signal processing module, for receiving an external trigger signal or transmitting a power measurement result through a data communication interface; The power module is used to provide working power for the bidirectional power measurement device.

9. The bidirectional power measurement device according to claim 8, characterized in that: The digital interface module includes a USB interface and an external trigger interface, wherein the USB interface is used to transmit the power measurement result to an external device; the external trigger interface is used to receive a TTL level trigger signal to control the start of the power measurement process.

10. A power measurement method based on the bidirectional power measurement device according to any one of claims 1 to 9, characterized in that: include: Connecting a signal input port or a signal output port of the device under test to the bidirectional power measurement device via a radio frequency connector; When measuring the transmission power, receiving the radio frequency signal output by the device under test, and performing impedance matching and attenuation on the radio frequency signal by using an attenuator; The attenuated RF signal is divided into two paths by using a splitter, one of which is converted into a voltage signal corresponding to the power by a power detection module, and the other signal path is used to transmit to the device under test; The voltage signal is converted into a digital signal by using an analog-to-digital conversion module, and the signal processing module performs filtering processing, multiple average calculations and power value calibration, and outputs a transmission power measurement result; When measuring the received power, a frequency synthesizer is used to generate a continuous wave signal within a preset frequency range, and an electrically tunable filter is used to filter out harmonics of the continuous wave signal; The continuous wave signal is divided into two paths by using a splitter, wherein one signal path is transmitted to the signal input port of the device under test, and the other signal path is measured by a power detection module for a reference power value; The reference power value is processed by using an analog-to-digital conversion module and a signal processing module, the actual input power is recorded, and the received power measurement result of the device under test is output according to the power calibration value.

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