Antenna near-field external frequency mixing multi-frequency point test acquisition system and method

Abstract

The present invention discloses a near-field external frequency mixing multi-frequency point test acquisition system and method for antennas, and relates to the field of antenna testing technology. The system consists of a scanning frame, a pulse synchronizer, a radio frequency signal source, a local oscillator signal source, a vector network analyzer, etc.: a control computer controls the movement of the scanning frame and generates a trigger pulse, and the pulse synchronizer generates a synchronization pulse accordingly, which synchronously triggers the radio frequency and local oscillator signal sources to switch outputs according to a preset frequency list. After being processed by the mixer, the vector network analyzer analyzes the signal and transmits the data to the computer to generate a report. The method includes the steps of moving the scanning frame, generating synchronization pulses, switching frequencies, processing signals, collecting and analyzing data, cyclic testing, and outputting results. This solution achieves equipment coordination through an external pulse synchronizer, breaks through instrument triggering limitations, reduces long-distance test delays, improves multi-frequency point test efficiency, reduces costs, is suitable for automated testing, and improves test accuracy and feasibility.

Description

Technical Field

[0001] The present invention relates to the technical field of antenna testing, and in particular to an antenna near-field external frequency mixing multi-frequency point testing and acquisition system and method. Background Art

[0002] The rapid development of communication technology is placing higher demands on the performance of communication antennas in fields such as mobile communications and the Internet of Things. As core components for transmitting and receiving wireless signals, antenna performance testing is a critical step in the design, production, and deployment of antennas. Antenna pattern testing, in particular, requires rapid acquisition of large amounts of data and extremely stringent time synchronization requirements for multi-frequency testing. Any data error can lead to a decrease in overall test accuracy.

[0003] Currently, mainstream antenna testing solutions on the market mostly use a vector network analyzer or a self-developed antenna test receiver with two signal sources. Although this method can achieve synchronous data acquisition, it has significant limitations: on the one hand, the deployment and implementation costs are high, and it must rely on instruments with transmit and receive trigger functions, which limits the application of low-cost receivers; on the other hand, when the instruments are far apart, the serial pulse transmission delay is significant, and the time cost increases significantly. After completing each frequency point test, it is necessary to wait for feedback from the preceding equipment, resulting in low efficiency in multi-frequency point testing. In addition, for instruments without trigger functions, traditional solutions are not applicable and cannot meet the needs of diverse test scenarios.

[0004] Therefore, how to break through the limitations of instrument triggering functions, reduce the time cost of long-distance testing, and achieve efficient synchronization of multi-frequency testing while ensuring test accuracy has become an urgent problem to be solved in the field of antenna testing technology. Summary of the Invention

[0005] The purpose of the present invention is to provide an antenna near-field external mixing multi-frequency point test acquisition system and method to solve the problem in the above background technology that testing cannot be performed due to long distance or the lack of receiver and signal source to generate trigger.

[0006] The present invention is achieved through the following technical solutions:

[0007] An antenna near-field external frequency mixing multi-frequency point test acquisition system includes: a scanning frame, a pulse synchronizer, a radio frequency signal source, a local oscillator signal source, a vector network analyzer, a transmitting mixer, a receiving mixer, a control computer, and a mounting platform, wherein:

[0008] Scanning frame: The scanning frame receives control instructions from the control computer and moves accurately to the test position to generate trigger pulses;

[0009] Pulse synchronizer: Receives the trigger pulse generated by the scanning frame to generate synchronization pulses and synchronously triggers the RF signal source, local oscillator signal source and vector network analyzer.

[0010] RF signal source and local oscillator signal source: after receiving the synchronization pulse, the output frequencies of the RF signal source and the local oscillator signal source are switched, and the RF signal and the local oscillator signal are output.

[0011] Transmit mixer: Mixes and down-converts the RF signal and the local oscillator signal to obtain the transmit signal and reference signal, which are sent to the scanning frame and vector network analyzer respectively;

[0012] Mounting platform: a fixed axis and a receiving antenna are set up, and the receiving antenna receives the transmission signal of the transmitting antenna;

[0013] Receive mixer: used to receive the received signal generated by the receiving antenna due to the transmitted signal and the local oscillator signal generated by the local oscillator signal source, down-convert the received signal and the local oscillator signal to obtain a test signal and input it to the test port of the vector network analyzer;

[0014] Vector network analyzer: used to receive the synchronization pulse generated by the pulse synchronizer, the reference signal generated by the transmitting mixer, the test signal generated by the receiving mixer, and analyze the test signal to obtain analysis data and send it to the control computer;

[0015] Control computer: The motion path and distance trigger interval are preset to control the movement of the scanning frame and generate trigger pulses.

[0016] Further,

[0017] The scanning frame receives instructions sent by the control computer through the LAN port and moves to the test point according to the instructions, sends a position confirmation signal to the control computer, and generates a trigger pulse to the pulse synchronizer after the scanning frame position is correct. The scanning frame is also provided with a motion axis and a transmitting antenna.

[0018] Further,

[0019] A pulse trigger number threshold is preset in the pulse synchronizer. The pulse synchronizer receives the trigger pulse generated by the scanning frame and generates the same number of synchronization pulses as the pulse trigger number threshold as an activation signal and sends them synchronously to the RF signal source, local oscillator signal source, and vector network analyzer.

[0020] Further,

[0021] The RF signal source and the local oscillator signal source are respectively preset with an RF frequency list and a local oscillator frequency list. Each time the RF signal source and the local oscillator signal source receive a synchronization pulse, the RF signal source and the local oscillator signal source respectively switch the output frequency once according to the frequency point sequence in the RF frequency list and the local oscillator frequency list, and the output frequency and the frequency point are the same, and output the RF signal and the local oscillator signal to the transmitting mixer. The local oscillator signal source simultaneously transmits the local oscillator signal to the receiving mixer.

[0022] Further,

[0023] The transmitting mixer mixes the radio frequency signal and the local oscillator signal and transmits the mixed signal to the transmitting antenna, which generates a transmitting signal. The radio frequency signal and the local oscillator signal are down-converted to obtain a reference signal which is input to the reference port of the vector network analyzer. Both the transmitting signal and the reference signal are filtered by a bandpass filter before being output.

[0024] Further,

[0025] The vector network analyzer has a built-in digital signal processor that performs real-time filtering on the collected test signal and performs analog-to-digital conversion on the reference signal and the test signal to generate analysis data of amplitude and phase based on the reference signal.

[0026] Further,

[0027] The distance trigger interval preset in the control computer refers to the fixed interval distance at which the motion axis moves with the scanning frame.

[0028] Further,

[0029] The number of frequency points in the RF frequency list and the local oscillator frequency list is the same as the pulse trigger number threshold.

[0030] Further,

[0031] An antenna near-field external frequency mixing multi-frequency point test acquisition method can be applied to the above-mentioned antenna near-field external frequency mixing multi-frequency point test acquisition system, comprising the following steps:

[0032] S1. Controlling gantry movement: The control computer sends instructions to the gantry based on the preset motion path and distance trigger interval. The gantry moves precisely along the motion path to the specified test position according to the instructions and generates a trigger pulse upon arrival.

[0033] S2. Synchronous Pulse Generation: The pulse synchronizer receives the trigger pulse from the scanning gantry and generates the same number of synchronous pulses according to the preset pulse trigger number threshold. These pulses are then synchronously sent to the RF signal source, the local oscillator signal source, and the vector network analyzer.

[0034] S3. Frequency switching and signal output: The RF signal source and the local oscillator signal source each receive a synchronization pulse, respectively, according to the preset RF frequency list and the local oscillator frequency list switch output frequency, generate RF signal and local oscillator signal;

[0035] S4. RF Signal and Local Oscillator Signal Processing: The transmit mixer receives the RF signal and the local oscillator signal, mixes and down-converts them, and generates a transmit signal and a reference signal, respectively. The transmit signal is sent to the scanning gantry's transmit antenna and input to the reference port of the vector network analyzer.

[0036] S5. Receive Signal Processing: The receive mixer receives the transmit signal from the transmit antenna using the receive antenna on the receiving station, converts the received signal into a received signal, and down-converts the received signal and the local oscillator signal to generate a test signal that is input into the test port of the vector network analyzer.

[0037] S6. Data Acquisition and Analysis: Triggered by a synchronous pulse, the vector network analyzer synchronously acquires the reference signal and the test signal, performs analog-to-digital conversion, real-time filtering, and amplitude / phase analysis to generate test data.

[0038] S7. Loop execution: Repeat steps S1-S6, moving the scan frame to the next test point according to the preset motion path and distance trigger interval, and traverse all frequency points in each frequency list to complete multi-position and multi-frequency automated testing;

[0039] S8. Result storage and output: The control computer summarizes the analysis data of the vector network analyzer, stores and generates a test report, completing the entire test process.

[0040] The present invention has the beneficial effects:

[0041] 1. Traditional antenna testing relies on the instrument's own transmit and receive trigger functions, and there is significant delay when transmitting serial pulses over long distances, resulting in high time costs and low flexibility in equipment replacement. The present invention uses an external pulse synchronizer to receive the scanning frame trigger pulse and synchronously generate multi-channel activation signals. This allows the RF signal source, local oscillator signal source, and vector network analyzer to work together without the need for the instrument to have a trigger function. For low-cost receivers that do not support the trigger function, or scenarios where the distance between instruments in the test site exceeds 10 meters, traditional serial pulses require multiple round-trip transmissions. The synchronized pulse mechanism avoids signal round-trip loss through centralized triggering, reduces the response time of a single trigger, and improves the feasibility and efficiency of long-distance testing.

[0042] 2. Traditional testing uses a serial pulse loop mechanism, requiring waiting for feedback from the preceding device after completing each frequency point. This causes the time required for single-location, multi-frequency testing to increase linearly with the number of frequency points. This invention uses a pulse synchronizer to convert a single scanning gantry trigger pulse into a synchronization pulse that matches the number of frequency points. This simultaneously triggers the RF signal source, local oscillator signal source, and vector network analyzer. The RF signal source and local oscillator signal source switch their outputs according to their respective frequency lists, triggering the vector network analyzer to synchronously collect real-time data at each frequency point, improving efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0043] Figure 1 Schematic diagram of the system of the present invention;

[0044] Figure 2 The figure is a flow chart of a method applied to the system of the present invention. DETAILED DESCRIPTION

[0045] The present invention will be further described in detail below with reference to the embodiments and the accompanying drawings, but the embodiments of the present invention are not limited thereto.

[0046] Example

[0047] See also Figures 1 to 2 :

[0048] An antenna near-field external frequency mixing multi-frequency point test acquisition system includes: a scanning frame, a pulse synchronizer, a radio frequency signal source, a local oscillator signal source, a vector network analyzer, a transmitting mixer, a receiving mixer, a control computer, and a mounting platform, wherein:

[0049] Scanning frame: The scanning frame receives control instructions from the control computer and moves accurately to the test position to generate trigger pulses;

[0050] Pulse synchronizer: Receives the trigger pulse generated by the scanning frame to generate synchronization pulses and synchronously triggers the RF signal source, local oscillator signal source and vector network analyzer.

[0051] RF signal source and local oscillator signal source: after receiving the synchronization pulse, the output frequencies of the RF signal source and the local oscillator signal source are switched, and the RF signal and the local oscillator signal are output.

[0052] Transmit mixer: Mixes and down-converts the RF signal and the local oscillator signal to obtain the transmit signal and reference signal, which are sent to the scanning frame and vector network analyzer respectively;

[0053] Mounting platform: a fixed axis and a receiving antenna are set up, and the receiving antenna receives the transmission signal of the transmitting antenna;

[0054] Receive mixer: used to receive the received signal generated by the receiving antenna due to the transmitted signal and the local oscillator signal generated by the local oscillator signal source, down-convert the received signal and the local oscillator signal to obtain a test signal and input it to the test port of the vector network analyzer;

[0055] Vector network analyzer: used to receive the synchronization pulse generated by the pulse synchronizer, the reference signal generated by the transmitting mixer, the test signal generated by the receiving mixer, and analyze the test signal to obtain analysis data and send it to the control computer;

[0056] Control computer: The motion path and distance trigger interval are preset to control the movement of the scanning frame and generate trigger pulses.

[0057] Further,

[0058] The scanning frame receives instructions sent by the control computer through the LAN port and moves to the test point according to the instructions, sends a position confirmation signal to the control computer, and generates a trigger pulse to the pulse synchronizer after the scanning frame position is correct. The scanning frame is also provided with a motion axis and a transmitting antenna.

[0059] The system receives commands and sends back position confirmation signals via the LAN port, ensuring accurate and reliable gantry movement and preventing inaccurate test data due to command transmission errors or position deviations. The trigger pulse generation mechanism ensures strict synchronization of gantry position and signal acquisition, improving the coordination of the test process.

[0060] In one embodiment, a control computer sends instructions to the gantry via a LAN port, causing it to move along a pre-set path at 5cm intervals to the first test point. Upon arrival, the gantry sends a position confirmation signal to the computer. Upon confirmation, a trigger pulse is generated, triggering the RF signal generator and other devices to begin operation. This ensures that signal acquisition at each test point is based on precise positioning. The pulse synchronizer receives trigger pulses via a BNC port and commands from the control software via a COM port.

[0061] Further,

[0062] A pulse trigger number threshold is preset in the pulse synchronizer. The pulse synchronizer receives the trigger pulse generated by the scanning frame and generates the same number of synchronization pulses as the pulse trigger number threshold as an activation signal and sends them synchronously to the RF signal source, local oscillator signal source, and vector network analyzer.

[0063] The pulse synchronizer's preset pulse trigger threshold allows the system to quickly generate activation signals equal to the threshold on demand. This number of activation signals corresponds exactly to the frequencies in the RF and LO frequency lists. This, combined with the pulse synchronizer's operating mechanism, ensures strict synchronization between devices, eliminating the impact of timing deviations on mixed signals. The cyclical transmission of synchronization pulses supports automated testing at multiple frequencies, significantly improving test efficiency and being particularly effective for the rapid frequency sweeps required by wideband antennas.

[0064] In a certain embodiment, the pulse synchronizer presets a pulse trigger number threshold of 10. When the scanning frame trigger pulse is input, the synchronizer generates 10 synchronization pulses, which sequentially trigger the RF signal source and the local oscillator signal source to switch to each frequency point in the list, such as from 1 GHz to 10 GHz, and at the same time trigger the vector network analyzer to synchronously collect data at each frequency point, completing continuous testing of 10 frequency points.

[0065] Further,

[0066] The RF signal source and the local oscillator signal source are respectively preset with an RF frequency list and a local oscillator frequency list. Each time the RF signal source and the local oscillator signal source receive a synchronization pulse, the RF signal source and the local oscillator signal source respectively switch the output frequency once according to the frequency point sequence in the RF frequency list and the local oscillator frequency list, and the output frequency and the frequency point are the same, and output the RF signal and the local oscillator signal to the transmitting mixer. The local oscillator signal source simultaneously transmits the local oscillator signal to the receiving mixer.

[0067] Independent RF and LO frequency tables support flexible frequency combinations to meet the needs of complex test scenarios (such as harmonic analysis or intermodulation testing). The synchronous switching mechanism ensures frequency consistency of the mixed signal, avoiding phase mismatch between the reference signal and the test signal caused by asynchronous signal sources, thereby improving measurement accuracy.

[0068] Further,

[0069] The transmitting mixer mixes the radio frequency signal and the local oscillator signal and transmits the mixed signal to the transmitting antenna, which generates a transmitting signal. The radio frequency signal and the local oscillator signal are down-converted to obtain a reference signal which is input to the reference port of the vector network analyzer. Both the transmitting signal and the reference signal are filtered by a bandpass filter before being output.

[0070] Further,

[0071] The vector network analyzer has a built-in digital signal processor that performs real-time filtering on the collected test signal and performs analog-to-digital conversion on the reference signal and the test signal to generate analysis data of amplitude and phase based on the reference signal.

[0072] The built-in digital signal processor filters and amplifies the signal in real time and performs analog-to-digital conversion, which can enhance the readability of weak signals, suppress noise interference, ensure the accuracy of amplitude and phase data, and provide a reliable basis for subsequent analysis.

[0073] For example, when the receiving antenna collects a weak test signal (such as -80dBm), the vector network analyzer first removes environmental noise through a digital filter, then amplifies the signal, and then converts the analog signal into a digital signal to generate accurate amplitude and phase data for analyzing the antenna's frequency response characteristics.

[0074] Further,

[0075] The distance trigger interval preset in the control computer refers to the fixed interval distance at which the motion axis moves with the scanning frame.

[0076] Preset motion paths and distance trigger intervals enable automated path planning and fixed-point testing of the scanner, avoiding path deviations or missed test points caused by manual operation and improving test consistency and efficiency.

[0077] In one embodiment, the antenna near-field plane is coordinate-based, and the control computer pre-sets a motion path from coordinates (0,0,0) to (100,0,0), with a distance trigger interval of 10 cm. The scanning gantry moves along this path, triggering a test every 10 cm. Data is collected at 10 locations in sequence, covering the entire scanning area and ensuring a comprehensive assessment of the antenna's near-field characteristics.

[0078] Further,

[0079] The number of frequency points in the RF frequency list and the local oscillator frequency list is the same as the pulse trigger number threshold.

[0080] The generated synchronization pulses can all correspond to the frequencies switched by a radio frequency signal source and a local oscillator signal source, and the generated reference signal and the test signal can correspond to each other.

[0081] Further,

[0082] An antenna near-field external frequency mixing multi-frequency point test acquisition method can be applied to the above-mentioned antenna near-field external frequency mixing multi-frequency point test acquisition system, comprising the following steps:

[0083] S1. Controlling gantry movement: The control computer sends instructions to the gantry based on the preset motion path and distance trigger interval. The gantry moves precisely along the motion path to the specified test position according to the instructions and generates a trigger pulse upon arrival.

[0084] S2. Synchronous Pulse Generation: The pulse synchronizer receives the trigger pulse from the scanning gantry and generates the same number of synchronous pulses according to the preset pulse trigger number threshold. These pulses are then synchronously sent to the RF signal source, the local oscillator signal source, and the vector network analyzer.

[0085] S3. Frequency switching and signal output: The RF signal source and the local oscillator signal source each receive a synchronization pulse, respectively, according to the preset RF frequency list and the local oscillator frequency list switch output frequency, generate RF signal and local oscillator signal;

[0086] S4. RF Signal and Local Oscillator Signal Processing: The transmit mixer receives the RF signal and the local oscillator signal, mixes and down-converts them, and generates a transmit signal and a reference signal, respectively. The transmit signal is sent to the scanning gantry's transmit antenna and input to the reference port of the vector network analyzer.

[0087] S5. Receive Signal Processing: The receive mixer receives the transmit signal from the transmit antenna using the receive antenna on the receiving station, converts the received signal into a received signal, and down-converts the received signal and the local oscillator signal to generate a test signal that is input into the test port of the vector network analyzer.

[0088] S6. Data Acquisition and Analysis: Triggered by a synchronous pulse, the vector network analyzer synchronously acquires the reference signal and the test signal, performs analog-to-digital conversion, real-time filtering, and amplitude / phase analysis to generate test data.

[0089] S7. Loop execution: Repeat steps S1-S6, moving the scan frame to the next test point according to the preset motion path and distance trigger interval, and traverse all frequency points in each frequency list to complete multi-position and multi-frequency automated testing;

[0090] S8. Result storage and output: The control computer summarizes the analysis data of the vector network analyzer, stores and generates a test report, completing the entire test process.

[0091] It will be understood that the above embodiments are merely exemplary embodiments for illustrating the principles of the present invention, and the present invention is not limited thereto. Persons skilled in the art will readily appreciate that various modifications and improvements can be made without departing from the spirit and substance of the present invention, and such modifications and improvements are considered within the scope of protection of the present invention.

Claims

1. An antenna near-field external frequency mixing multi-frequency point test acquisition system, characterized in that: include: Scanning frame, pulse synchronizer, RF signal source, local oscillator signal source, vector network analyzer, transmitting mixer, receiving mixer, control computer, installation platform, including: Scanning frame: The scanning frame receives control instructions from the control computer and moves accurately to the test position to generate trigger pulses; Pulse synchronizer: The pulse synchronizer has a preset pulse trigger number threshold. After receiving the trigger pulse generated by the scanning frame, it generates a number of synchronization pulses equal to the pulse trigger number threshold as the activation signal and sends them synchronously to the RF signal source, local oscillator signal source, and vector network analyzer; RF signal source and local oscillator signal source: After receiving a synchronization pulse, the output frequencies of the RF signal source and local oscillator signal source are switched, and the RF signal and local oscillator signal are output. The local oscillator signal source simultaneously transmits the local oscillator signal to the receiving mixer. The RF signal source and local oscillator signal source are preset with a RF frequency list and a local oscillator frequency list, respectively. Each time a synchronization pulse is received, the output frequency is switched once according to the frequency points in the RF frequency list and the local oscillator frequency list, respectively, and the output frequency and the frequency points are the same. The number of frequency points in the RF frequency list and the local oscillator frequency list are both the same as the pulse trigger number threshold; Transmit mixer: Mixes and down-converts the RF signal and the local oscillator signal to obtain the transmit signal and reference signal, which are sent to the scanning frame and vector network analyzer respectively; Mounting platform: a fixed axis and a receiving antenna are set up, and the receiving antenna receives the transmission signal of the transmitting antenna; Receive mixer: used to receive the received signal generated by the receiving antenna due to the transmitted signal and the local oscillator signal generated by the local oscillator signal source, down-convert the received signal and the local oscillator signal to obtain a test signal and input it to the test port of the vector network analyzer; Vector network analyzer: used to receive the synchronization pulse generated by the pulse synchronizer, the reference signal generated by the transmitting mixer, the test signal generated by the receiving mixer, and analyze the test signal to obtain analysis data and send it to the control computer; Control computer: presets the motion path and distance trigger interval to control the movement of the scanning frame and generate trigger pulses, summarizes the analysis data of the vector network analyzer and generates a test report.

2. The antenna near-field external frequency mixing multi-frequency point test acquisition system according to claim 1, characterized in that: The scanning frame receives instructions sent by the control computer through the LAN port and moves to the test point according to the instructions, sends a position confirmation signal to the control computer, and generates a trigger pulse to the pulse synchronizer after the scanning frame position is correct. The scanning frame is also provided with a motion axis and a transmitting antenna.

3. The antenna near-field external frequency mixing multi-frequency point test acquisition system according to claim 1, characterized in that: The transmitting mixer mixes the radio frequency signal and the local oscillator signal and transmits the mixed signal to the transmitting antenna, which generates a transmitting signal and transmits it to the receiving antenna. The radio frequency signal and the local oscillator signal are down-converted to obtain a reference signal which is input into the reference port of the vector network analyzer. Both the transmitting signal and the reference signal are filtered through a bandpass filter before being output.

4. The antenna near-field external frequency mixing multi-frequency point test acquisition system according to claim 3, characterized in that: The vector network analyzer has a built-in digital signal processor that performs real-time filtering on the collected test signal and performs analog-to-digital conversion on the reference signal and the test signal to generate analysis data of amplitude and phase based on the reference signal.

5. The antenna near-field external frequency mixing multi-frequency point test acquisition system according to claim 2, characterized in that: The distance trigger interval preset in the control computer refers to the fixed interval distance at which the motion axis moves with the scanning frame.

6. A method for collecting near-field and external frequency mixing signals for antenna testing, which can be applied to the system for collecting near-field and external frequency mixing signals for antenna testing according to claims 1 to 5, characterized in that: The steps include: S1. Controlling gantry movement: The control computer sends instructions to the gantry based on the preset motion path and distance trigger interval. The gantry moves precisely along the motion path to the specified test position according to the instructions and generates a trigger pulse upon arrival. S2. Synchronous Pulse Generation: The pulse synchronizer receives the trigger pulse from the scanning gantry and generates the same number of synchronous pulses according to the preset pulse trigger number threshold. These pulses are then synchronously sent to the RF signal source, the local oscillator signal source, and the vector network analyzer. S3. Frequency switching and signal output: Each time the RF signal source and the local oscillator signal source receive a synchronization pulse, they switch the output frequency according to the preset RF frequency list and local oscillator frequency list to generate RF signals and local oscillator signals; S4. RF Signal and Local Oscillator Signal Processing: The transmit mixer receives the RF signal and the local oscillator signal, mixes and down-converts them, and generates a transmit signal and a reference signal, respectively. The transmit signal is sent to the scanning gantry's transmit antenna and input to the reference port of the vector network analyzer. S5. Receive Signal Processing: The receive mixer receives the transmit signal from the transmit antenna using the receive antenna on the receiving station, converts the received signal into a received signal, and down-converts the received signal and the local oscillator signal to generate a test signal that is input into the test port of the vector network analyzer. S6. Data Acquisition and Analysis: Triggered by a synchronous pulse, the vector network analyzer synchronously acquires the reference signal and the test signal, performs analog-to-digital conversion, real-time filtering, and amplitude / phase analysis to generate test data. S7. Loop execution: Repeat steps S1-S6, moving the scanner to the next test point according to the preset motion path and distance trigger interval, and traverse all frequency points in each frequency list to complete multi-position and multi-frequency automated testing; S8. Result storage and output: The control computer summarizes the analysis data of the vector network analyzer, stores and generates a test report, completing the entire test process.

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