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Antenna near-field testing method and device

A test method and antenna technology, applied in the direction of the antenna radiation pattern, can solve the problems of high cost, complex structure of the servo system, high precision requirements of the servo system, etc., and achieve the effect of improving accuracy and reducing accuracy requirements

Active Publication Date: 2020-05-08
GUANGDONG MIKWAVE COMM TECH
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  • Abstract
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Problems solved by technology

[0005] Based on this, it is necessary to provide a near-field antenna testing method and device for the existing test methods that require high precision of the servo system, which makes the servo system complex in structure and high in cost.

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  • Antenna near-field testing method and device
  • Antenna near-field testing method and device
  • Antenna near-field testing method and device

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Embodiment Construction

[0026] In order to better understand the purpose, technical solution and technical effect of the present invention, the present invention will be further explained below in conjunction with the accompanying drawings and embodiments. At the same time, it is stated that the embodiments described below are only used to explain the present invention, and are not intended to limit the present invention.

[0027] In one embodiment, as figure 1 As shown, it is a method flowchart of the antenna near-field test method, including steps S1, S2 and S3:

[0028] S1, sampling the antenna through the probe to obtain the first near-field distribution data of the antenna.

[0029] In this specific embodiment, the first near-field distribution data of the antenna is obtained by sampling the antenna through the probe of the servo system driving the antenna. Preferably, a near-field probe is selected as the probe to improve the sampling accuracy of the antenna.

[0030] Preferably, as figure...

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Abstract

The present invention provides an antenna near field testing method and device. The method comprises a step of sampling an antenna through a probe and obtaining first near field distribution data of the antenna, a step of carrying out mathematical transformation according to the first near field distribution data, and obtaining a far field directional diagram of the antenna, and a step of carrying out mathematical reverse transformation on the far field directional diagram of the antenna and obtaining second near field distribution data of the antenna. Through a technical scheme provided by the invention, after the antenna is sampled to obtain the first near field distribution data of the antenna, the first near field distribution data is subjected to mathematical transformation to obtain the far field directional diagram of the antenna, and then the far field directional diagram is subjected to the mathematical reverse transformation to obtain the second near field distribution data of the antenna. Through one time of near and far field transformation and one time of far and near field transformation, a test error generated in a condition that a sampling distance in a near field test is an unequal distance is corrected, the accuracy of the near field test is improved, and the precision requirement of a servo system by the near field test is reduced.

Description

technical field [0001] The invention relates to the technical field of antenna testing, in particular to an antenna near-field testing method and device. Background technique [0002] Microwave antenna pattern testing methods include near-field testing, far-field testing, and compact field testing. Compared with the other two test methods, the near-field test has more advantages in terms of site requirements, airspace test coverage, test efficiency, and test accuracy. Therefore, the antenna near-field test is gradually becoming the mainstream test method. The antenna near-field test is a test method that uses a high-precision servo system to drive a sampling probe to collect antenna near-field distribution data, and then perform near-far field transformation through fast Fourier transform to obtain the performance of the radiation pattern in the entire airspace. [0003] The existing test method requires that the servo system can accurately drive the position of the samplin...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01R29/10
CPCG01R29/10
Inventor 苏道一
Owner GUANGDONG MIKWAVE COMM TECH
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