宇航计测技术 ›› 2021, Vol. 41 ›› Issue (5): 22-26.doi: 10.12060/j.issn.1000-7202.2021.05.05

• 精密测试技术 • 上一篇    下一篇

大型紧缩场静区不同位置电磁幅相特性测试分析

马永光1；张雁钊2   

  1. 1.北京无线电计量测试研究所，北京 100039； 2.航天建筑设计研究院有限公司，北京 100071
  • 出版日期:2021-10-25 发布日期:2022-03-08
  • 作者简介:马永光（1978.05-），男，高级工程师，博士，主要研究方向：紧缩场、微波暗室、屏蔽室等电磁环境测量及天线、天线罩、材料等电磁特性测量技术。

Analysis of Electromagnetic Amplitude and Phase Characteristics at Different Positions in the Quiet Zone of a Large Compact Field

MA Yong-guang1；ZHANG Yan-zhao2   

  1. 1.Beijing Institute of Radio Metrology and Measurement,Beijing 100039,China;
    2.China Aerospace Academy of Architectural Design & Research Co.Ltd,Beijing 100071,China
  • Online:2021-10-25 Published:2022-03-08

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摘要： 大型紧缩场安装在吸波材料铺设方案特殊设计的微波暗室内，由于受紧缩场馈源方向图特性、馈源相位中心位置、反射面加工精度、反射面边齿外形及尺寸、反射面分块拼接与边齿拼接精度、馈源与反射面的相对几何关系、静区相对反射面的位置关系等多项因素影响，大型紧缩场静区内电磁幅相分布特性随工作频率及空间位置不同差异较大。本文利用某静区尺寸为5m×5m×5m的大型紧缩场，对静区前、中、后三处不同位置垂直来波方向的竖直截面上的电磁幅相分布特性在工作频段(0.5～40)GHz内进行了性能测试，对测试结果详细分析了静区同一截面不同工作频率及静区不同截面位置的电磁幅相差异。

关键词: 紧缩场, 静区, 幅度, 相位, 测试

Abstract: The large-scale compact field is installed in a microwave anechoic chamber specially designed for the laying plan of absorbing materials.Due to the characteristics of the feed pattern of the compact field,the center position of the feed phase,the processing accuracy of the reflecting surface,the shape and size of the reflecting surface tooth,the reflecting surface segmented splicing and splicing accuracy with the side tooth,the relative geometric relationship between the feed and the reflecting surface ,the position relationship of the quiet zone relative to the reflecting surface and many other factors,the electromagnetic amplitude and phase distribution characteristics of the quiet zone of the large-scale compact field vary greatly with the working frequency and spatial position.This paper uses a large-scale compact field with a quiet zone size of 5m×5m×5m,and analyzes the electromagnetic amplitude and phase distribution characteristics of the vertical section in the vertical direction of the incoming wave at three different positions in the front,middle and back of the quiet zone in the working frequency band (0.5~40)GHz.The test results were analyzed in detail for the electromagnetic amplitude and phase difference of the same cross section at different operating frequencies and the electromagnetic amplitude and phase difference at different cross-sectional positions in the quiet zone.

Key words: Compact field, Quiet zone, Amplitude, Phase, Test

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