Antenna multi-frequency-point parameter testing device, method and system based on multi-tone signals

Abstract

The invention belongs to the technical field of antenna testing, and particularly relates to an antenna multi-frequency-point parameter testing device, method and system based on multi-tone signals, and the device comprises a vector signal source and a testing receiver. Wherein the vector signal source is used for providing a multi-tone microwave and millimeter wave excitation signal required by antenna measurement; and based on the multi-working-frequency-band parallel test capability of the test receiver, receiving and analyzing the multi-tone microwave and millimeter wave excitation signals, obtaining amplitude phase data of multiple frequency points of the antenna, performing synchronous test of multiple working frequencies, and completing parameter test of the multiple frequency points of the antenna.

Description

Technical Field

[0001] The present invention belongs to the technical field of antenna testing, and in particular relates to a device, method and system for testing antenna multi-frequency parameters based on multi-tone signals. Background Art

[0002] The statements in this section merely provide background information related to the present invention and do not necessarily constitute prior art.

[0003] Antenna parameter measurement refers to the process of using instruments such as field strength meters, power meters, impedance plotters or network analyzers and special test equipment such as standard antennas to measure the antenna's radiation pattern, gain, efficiency, impedance, standing wave ratio, polarization isolation, working frequency band and other electrical performance parameters. Based on the reciprocity principle, it is proved that the electrical performance of the same antenna when used for transmission and reception is exactly the same. In specific tests, the working state of the antenna to be tested can be selected according to the conditions of the instrument, site, etc.

[0004] The block diagram of a typical antenna parameter test system is as follows: Figure 1 As shown, according to the different microwave millimeter signal transceiver equipment, there are mainly two ways to implement it. One is as follows Figure 1 (a) is a test system based on a vector network analyzer. The internal signal source of the vector network analyzer provides the microwave and millimeter wave excitation signal required for antenna testing, and the internal receiver completes the reception and processing of the microwave and millimeter wave signal. Figure 1 (b) shows a test system based on a combination of a signal source and a spectrum analyzer. The signal source provides the microwave and millimeter wave excitation signal required for antenna testing, and the spectrum analyzer completes the reception and processing of the microwave and millimeter wave signal. Combined with the movement of mechanical equipment such as a turntable or a scanning frame, the three-dimensional radiation pattern and other parameter tests of the antenna under test at different angles can be realized, and automatic testing can be realized through the main control computer and automatic testing software.

[0005] Whether it is based on a vector network analyzer or an antenna test system based on a combination of a signal source and a spectrum analyzer, the following are commonly used: Figure 2 The method of multiple single-frequency testing in time division is shown to achieve multi-frequency antenna parameter testing. After completing the preparations such as connecting the system instruments and equipment, starting preheating, and setting test parameters, the system main control program issues a start test command, and the vector network analyzer (signal source and spectrum analyzer) responds to the command, which takes time t s After that, the internal source and receiver work stably at the first working frequency point f1, and then it takes time t c Complete the amplitude and phase data test of the working frequency point; the software controls the device to the next working frequency point according to the test sequence, which takes time t s After that, the internal source and receiver work stably at the second working frequency point f2, and then it takes time t cComplete the amplitude and phase data test of the working frequency point. According to this process, complete the test of N working frequency points, which takes a total of N (t s +t c ), when there are many working frequency points, especially when testing phased array antennas with multiple frequencies, multiple wavelengths, and multiple channels, there are problems of slow testing speed and low testing efficiency.

[0006] According to the inventors, antenna parameters such as antenna pattern, gain, and sidelobe level are closely related to frequency, so antenna parameter testing must be completed at multiple operating frequencies. At present, whether it is based on a vector network analyzer or an antenna test system based on a combination of a signal source and a spectrum analyzer, the method of multiple single operating frequency tests is generally adopted to achieve multi-frequency antenna parameter testing, which has the problems of slow test speed and low test efficiency. Summary of the invention

[0007] To solve the above problems, the present invention proposes an antenna multi-frequency parameter testing device, method and system based on multi-tone signals. Based on a vector signal source and a test receiver, simultaneous testing of multiple operating frequencies is achieved through the reception and transmission of multi-tone signals. Antenna parameter testing of multiple operating frequencies is only required once for data collection, which greatly improves the antenna testing speed.

[0008] According to some embodiments, a first solution of the present invention provides an antenna multi-frequency parameter testing device based on a multi-tone signal, which adopts the following technical solution:

[0009] A multi-frequency point parameter testing device for an antenna based on a multi-tone signal comprises a vector signal source and a test receiver; wherein the vector signal source is used to provide a multi-tone microwave millimeter wave excitation signal required for antenna measurement; based on the multi-working frequency band parallel testing capability of the test receiver, the multi-tone microwave millimeter wave excitation signal is received and analyzed to obtain amplitude and phase data of the multi-frequency point of the antenna, and synchronous testing of multiple working frequencies is performed to complete parameter testing of the multi-frequency point of the antenna.

[0010] As a further technical limitation, the multi-tone microwave and millimeter wave excitation signal includes at least two signals with different frequency components.

[0011] As a further technical limitation, in the test receiver, the multi-tone microwave and millimeter wave excitation signal is power amplified and then mixed and filtered with the local oscillator signal to obtain a multi-tone broadband intermediate frequency signal, and the obtained multi-tone broadband intermediate frequency signal is converted from analog to digital to obtain a digital quantity of the multi-tone broadband intermediate frequency signal; the obtained digital quantity of the multi-tone broadband intermediate frequency signal is divided into several channels and digital down-converted, filtered and extracted, and amplitude and phase extracted in parallel in sequence to obtain amplitude and phase data corresponding to multiple frequency points.

[0012] Furthermore, the number of channels processed in parallel is consistent with the number of frequencies in the multi-tone microwave and millimeter wave excitation signal.

[0013] According to some embodiments, the second solution of the present invention provides an antenna multi-frequency parameter testing method based on a multi-tone signal, adopts the antenna multi-frequency parameter testing device based on a multi-tone signal provided by the first solution, and adopts the following technical solution:

[0014] A method for testing antenna multi-frequency parameters based on multi-tone signals, comprising:

[0015] Get vector signal source;

[0016] extracting a multi-tone microwave millimeter wave excitation signal of the acquired vector signal source;

[0017] Analyze the extracted multi-tone microwave millimeter wave excitation signal to obtain the amplitude and phase data of the antenna at multiple frequency points;

[0018] Based on the obtained amplitude and phase data, the parameter test of the antenna at multiple frequency points is completed.

[0019] As a further technical limitation, the extracted multi-tone microwave millimeter wave excitation signal is mixed and filtered with the local oscillator signal after power amplification to obtain a multi-tone broadband intermediate frequency signal, and the obtained multi-tone broadband intermediate frequency signal is converted from analog to digital to obtain the digital quantity of the multi-tone broadband intermediate frequency signal; the obtained digital quantity of the multi-tone broadband intermediate frequency signal is divided into several channels and digital down-converted, filtered and extracted, and amplitude and phase extracted in parallel in sequence to obtain amplitude and phase data corresponding to multiple frequency points.

[0020] According to some embodiments, a third solution of the present invention provides an antenna multi-frequency parameter testing system based on a multi-tone signal, which adopts the following technical solution:

[0021] An antenna multi-frequency parameter testing system based on multi-tone signals, comprising:

[0022] An acquisition module, configured to acquire a vector signal source;

[0023] An extraction module configured to extract the multi-tone microwave millimeter wave excitation signal of the acquired vector signal source;

[0024] An analysis module, which is configured to analyze the extracted multi-tone microwave and millimeter wave excitation signal to obtain amplitude and phase data of multiple frequency points of the antenna;

[0025] The test module is configured to complete the parameter test of the antenna at multiple frequency points according to the obtained amplitude and phase data.

[0026] According to some embodiments, a fourth solution of the present invention provides a computer-readable storage medium, which adopts the following technical solution:

[0027] A computer-readable storage medium stores a program, which, when executed by a processor, implements the steps of the antenna multi-frequency point parameter testing method based on multi-tone signals as described in the second solution of the present invention.

[0028] According to some embodiments, a fifth solution of the present invention provides an electronic device, which adopts the following technical solution:

[0029] An electronic device comprises a memory, a processor and a program stored in the memory and running on the processor, wherein when the processor executes the program, the steps in the antenna multi-frequency point parameter testing method based on multi-tone signals as described in the second scheme of the present invention are implemented.

[0030] According to some embodiments, a sixth solution of the present invention provides a computer program product, which adopts the following technical solution:

[0031] A computer program product includes software codes, wherein the program in the software codes executes the steps in the antenna multi-frequency point parameter testing method based on multi-tone signals as described in the second solution of the present invention.

[0032] Compared with the prior art, the present invention has the following beneficial effects:

[0033] The present invention provides a multi-tone microwave millimeter wave excitation signal with multiple operating frequencies through a vector signal source, analyzes and processes the multi-tone microwave millimeter wave excitation signal under the action of a test receiver, obtains amplitude and phase data of multiple frequency points of the antenna, and then completes parameter testing of the multiple frequency points of the antenna.

[0034] The present invention realizes simultaneous testing of multiple operating frequencies by sending and receiving multi-tone signals, and antenna parameter testing of multiple operating frequencies can be realized with only one data collection, thereby greatly improving the antenna testing speed. BRIEF DESCRIPTION OF THE DRAWINGS

[0035] The drawings in the specification that constitute a part of this embodiment are used to provide a further understanding of this embodiment. The schematic embodiments of this embodiment and their descriptions are used to explain this embodiment and do not constitute improper limitations on this embodiment.

[0036] Figure 1 It is a structural block diagram of a conventional typical antenna parameter test system in the background technology of the present invention; wherein, Figure 1 (a) is a test system based on a vector network analyzer. Figure 1 (b) is a test system based on a combination of a signal source and a spectrum analyzer;

[0037] Figure 2 It is a timing diagram of multi-frequency point testing of a conventional typical antenna testing system in Embodiment 1 of the present invention;

[0038] Figure 3 The schematic diagram of the antenna multi-frequency parameter testing method based on multi-tone signals in the first embodiment of the present invention;

[0039] Figure 4 This is a schematic diagram of a multi-tone signal test reception in Embodiment 1 of the present invention;

[0040] Figure 5 The present invention is a timing diagram of the antenna multi-frequency parameter test based on multi-tone signals in the first embodiment of the present invention. DETAILED DESCRIPTION

[0041] The present invention will be further described below in conjunction with the accompanying drawings and embodiments.

[0042] It should be noted that the following detailed descriptions are exemplary and are intended to provide further explanation of the present application. Unless otherwise specified, all technical and scientific terms used herein have the same meanings as those commonly understood by those skilled in the art to which the present application belongs.

[0043] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit exemplary embodiments according to the present invention. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "comprising" and / or "including" are used in this specification, it indicates the presence of features, steps, operations, devices, components and / or combinations thereof.

[0044] In the present invention, terms such as "upper", "lower", "left", "right", "front", "back", "vertical", "horizontal", "side", "bottom", etc. indicate directions or positional relationships based on the directions or positional relationships shown in the accompanying drawings. They are relational words determined only for the convenience of describing the structural relationships of the various parts or elements of the present invention, and do not specifically refer to any part or element in the present invention and should not be understood as limitations on the present invention.

[0045] In the absence of conflict, the embodiments of the present invention and the features of the embodiments may be combined with each other.

[0046] Embodiment 1

[0047] Embodiment 1 of the present invention introduces a device for testing antenna multi-frequency parameters based on multi-tone signals.

[0048] Based on the existing antenna systems based on vector network analyzers and on the combination of signal sources and spectrum analyzers, time-sharing multiple single working frequency tests are used to complete the testing of multi-frequency antenna parameters, which has the problems of slow testing speed and low efficiency. Based on this, this embodiment proposes an antenna multi-frequency parameter testing device based on multi-tone signals, introduces a vector signal source and a test receiver, and realizes simultaneous testing of multiple working frequency parameters through the reception and transmission of multi-tone signals, and realizes the testing of multiple working frequency antenna parameters through one data acquisition, which greatly improves the speed of antenna testing.

[0049] The working principle of the antenna multi-frequency parameter testing device based on multi-tone signals in this embodiment is as follows: Figure 3 As shown, the difference from the conventional typical antenna test system is that a vector signal source with the ability to generate multi-tone signals (or other instruments and equipment with this function) replaces the conventional signal source to provide the multi-tone microwave millimeter wave excitation signal required for antenna testing, and a test receiver with the ability to receive multi-tone signals (or other instruments and equipment with this function) completes the reception and processing of the multi-tone microwave millimeter wave excitation signal.

[0050] The principle of receiving the multi-tone signal test in this embodiment is as follows: Figure 4 As shown, it is implemented in the test receiver, specifically: N point frequency superimposed multi-tone signal S f =S f1 +S f2 +…+S fN It is a broadband microwave millimeter wave signal. After the broadband microwave millimeter wave signal enters the test receiver, it is mixed with the local oscillator signal after power amplification to output a broadband intermediate frequency signal; the broadband intermediate frequency signal is converted into a digital signal after AD conversion, and enters the digital signal processing module for parallel processing. During parallel processing, the digitized broadband intermediate frequency signal is divided into N channels to complete digital down-conversion, filtering extraction and amplitude and phase extraction in parallel, and the amplitude and phase data corresponding to N frequency points are obtained.

[0051] By utilizing the multi-frequency band parallel testing capability of the test receiver, the synchronous testing of multiple operating frequencies can be completed. The timing diagram of the antenna multi-frequency point parameter test based on multi-tone signals is shown in the figure below. Figure 5 As shown in the figure, after completing the preparation work such as connecting the system instruments and equipment, starting preheating, and setting test parameters, the system main control program sends a start test command, and the vector signal source and test receiver respond to the command, which takes time t s After stabilization, it takes time t c It takes t to complete the test of the amplitude and phase data of the N operating frequency points. s +t c . With the existing Figure 2 Compared with the method of multiple single-operating frequency tests in time-sharing, the test efficiency is increased by N times.

[0052] This embodiment implements simultaneous testing of multiple operating frequencies by sending and receiving multi-tone signals, and antenna parameter testing of multiple operating frequencies can be implemented with only one data collection, which greatly improves the antenna testing speed.

[0053] Embodiment 2

[0054] Embodiment 2 of the present invention introduces a method for testing antenna multi-frequency parameters based on multi-tone signals.

[0055] A method for testing antenna multi-frequency parameters based on multi-tone signals, comprising:

[0056] Get vector signal source;

[0057] extracting a multi-tone microwave millimeter wave excitation signal of the acquired vector signal source;

[0058] Analyze the extracted multi-tone microwave millimeter wave excitation signal to obtain the amplitude and phase data of the antenna at multiple frequency points;

[0059] Based on the obtained amplitude and phase data, the parameter test of the antenna at multiple frequency points is completed.

[0060] As one or more implementation modes, the extracted multi-tone microwave millimeter wave excitation signal is mixed and filtered with the local oscillator signal after power amplification to obtain a multi-tone broadband intermediate frequency signal, and the obtained multi-tone broadband intermediate frequency signal is converted into a digital quantity to obtain the digital quantity of the multi-tone broadband intermediate frequency signal; the obtained digital quantity of the multi-tone broadband intermediate frequency signal is divided into several channels and digital down-converted, filtered and extracted, and amplitude and phase extracted in parallel in sequence to obtain amplitude and phase data corresponding to multiple frequency points.

[0061] The detailed steps are the same as the working principles of the antenna multi-frequency parameter testing device based on multi-tone signals provided in Example 1, and will not be repeated here.

[0062] Embodiment 3

[0063] Embodiment 3 of the present invention introduces an antenna multi-frequency parameter testing system based on multi-tone signals.

[0064] An antenna multi-frequency parameter testing system based on multi-tone signals, comprising:

[0065] An acquisition module, configured to acquire a vector signal source;

[0066] An extraction module configured to extract the multi-tone microwave millimeter wave excitation signal of the acquired vector signal source;

[0067] An analysis module, which is configured to analyze the extracted multi-tone microwave and millimeter wave excitation signal to obtain amplitude and phase data of multiple frequency points of the antenna;

[0068] The test module is configured to complete the parameter test of the antenna at multiple frequency points according to the obtained amplitude and phase data.

[0069] The detailed steps are the same as the antenna multi-frequency parameter testing method based on multi-tone signals provided in Example 2, and will not be repeated here.

[0070] Embodiment 4

[0071] Embodiment 4 of the present invention provides a computer-readable storage medium.

[0072] A computer-readable storage medium stores a program thereon, and when the program is executed by a processor, the steps in the antenna multi-frequency point parameter testing method based on multi-tone signals as described in Embodiment 2 of the present invention are implemented.

[0073] The detailed steps are the same as the antenna multi-frequency parameter testing method based on multi-tone signals provided in Example 2, and will not be repeated here.

[0074] Embodiment 5

[0075] A fifth embodiment of the present invention provides an electronic device.

[0076] An electronic device comprises a memory, a processor and a program stored in the memory and running on the processor, wherein when the processor executes the program, the steps in the antenna multi-frequency point parameter testing method based on multi-tone signals as described in Embodiment 2 of the present invention are implemented.

[0077] The detailed steps are the same as the antenna multi-frequency parameter testing method based on multi-tone signals provided in Example 2, and will not be repeated here.

[0078] Embodiment 6

[0079] Embodiment 6 of the present invention provides a computer program product.

[0080] A computer program product includes software codes, wherein the program in the software codes executes the steps in the method for testing antenna multi-frequency point parameters based on multi-tone signals as described in the second embodiment of the present invention.

[0081] The detailed steps are the same as the antenna multi-frequency parameter testing method based on multi-tone signals provided in Example 2, and will not be repeated here.

[0082] The above description is only a preferred embodiment of the present embodiment and is not intended to limit the present embodiment. For those skilled in the art, the present embodiment may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present embodiment shall be included in the protection scope of the present embodiment.

Claims

1. An antenna multi-frequency parameter testing device based on multi-tone signals, characterized in that: It includes a vector signal source and a test receiver; wherein the vector signal source is used to provide the multi-tone microwave millimeter wave excitation signal required for antenna measurement; based on the multi-working frequency band parallel testing capability of the test receiver, the multi-tone microwave millimeter wave excitation signal is received and analyzed to obtain the amplitude and phase data of the antenna's multi-frequency points, perform synchronous testing of multiple working frequencies, and complete parameter testing of the antenna's multi-frequency points.

2. The antenna multi-frequency parameter testing device based on multi-tone signals as claimed in claim 1, characterized in that: In the test receiver, the multi-tone microwave millimeter wave excitation signal is mixed and filtered with the local oscillator signal after power amplification to obtain a multi-tone broadband intermediate frequency signal, and the obtained multi-tone broadband intermediate frequency signal is converted into analog to digital to obtain a digital quantity of the multi-tone broadband intermediate frequency signal; The obtained multi-tone broadband intermediate frequency signal digital quantity is divided into several channels and processed in parallel by digital down-conversion, filtering extraction and amplitude and phase extraction in sequence to obtain amplitude and phase data corresponding to multiple frequency points.

3. The antenna multi-frequency parameter testing device based on multi-tone signals as described in claim 2, characterized in that: The number of channels processed in parallel is consistent with the number of frequencies in the multi-tone microwave and millimeter wave excitation signal.

4. The antenna multi-frequency parameter testing device based on multi-tone signals as described in claim 1, characterized in that: The multi-tone microwave and millimeter wave excitation signal includes at least two signals with different frequency components.

5. A method for testing antenna multi-frequency parameters based on multi-tone signals, characterized in that: include: Get vector signal source; extracting a multi-tone microwave millimeter wave excitation signal of the acquired vector signal source; Analyze the extracted multi-tone microwave millimeter wave excitation signal to obtain the amplitude and phase data of the antenna at multiple frequency points; Based on the obtained amplitude and phase data, the parameter test of the antenna at multiple frequency points is completed.

6. The method for testing antenna multi-frequency parameters based on multi-tone signals as claimed in claim 5, characterized in that: The extracted multi-tone microwave millimeter wave excitation signal is power amplified and then mixed and filtered with the local oscillator signal to obtain a multi-tone broadband intermediate frequency signal, and the obtained multi-tone broadband intermediate frequency signal is analog-to-digital converted to obtain a digital quantity of the multi-tone broadband intermediate frequency signal; The obtained multi-tone broadband intermediate frequency signal digital quantity is divided into several channels and processed in parallel by digital down-conversion, filtering extraction and amplitude and phase extraction in sequence to obtain amplitude and phase data corresponding to multiple frequency points.

7. An antenna multi-frequency parameter test system based on multi-tone signals, characterized in that: include: An acquisition module, configured to acquire a vector signal source; An extraction module configured to extract the multi-tone microwave millimeter wave excitation signal of the acquired vector signal source; An analysis module, which is configured to analyze the extracted multi-tone microwave and millimeter wave excitation signal to obtain amplitude and phase data of multiple frequency points of the antenna; The test module is configured to complete the parameter test of the antenna at multiple frequency points according to the obtained amplitude and phase data.

8. A computer-readable storage medium having a computer program stored thereon, characterized in that: When the program is executed by a processor, the steps of the antenna multi-frequency parameter testing method based on multi-tone signals as described in any one of claims 5-6 are implemented.

9. An electronic device comprising a memory, a processor, and a computer program stored in the memory and running on the processor, characterized in that: When the processor executes the program, the steps of the antenna multi-frequency parameter testing method based on multi-tone signals as described in any one of claims 5-6 are implemented.

10. A computer program product comprising software code, characterized in that The program in the software code executes the steps of the antenna multi-frequency parameter testing method based on multi-tone signals as described in any one of claims 5-6.

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