互耦对全电波暗室辐射测试的不确定度影响分析  

Influence of Mutual Coupling on Uncertainty of Radiation Measurement in Anechoic Chamber

作　　者：周毅 温志英 王霄天 陈华平 徐蓓蓓 谢晋雄 ZHOU Yi;WEN Zhi-ying;WANG Xiao-tian;CHEN Hua-ping;XU Bei-bei;XIE Jin-xiong(Testing and Technology Center for Industrial Products of Shenzhen Customs,Shenzhen 518067;Shenzhen Academy of Inspection and Quarantine,Shenzhen 518045)

机构地区：[1]深圳海关工业品检测技术中心,深圳518067 [2]深圳市检验检疫科学研究院,深圳518045

出　　处：《环境技术》2021年第4期123-127,共5页Environmental Technology

基　　金：深圳市科技研发资金项目(JCYJ20120831160213583)。

摘　　要：旨在研究全电波暗室中互耦效应对辐射骚扰测试不确定度的影响。从典型的偶极子天线入手,深入研究了天线之间互耦效应与天线间距的关系,计算得出了暗室中辐射测试的远场条件,分析了各种不确定度对电波暗室中辐射测试及场地验证的影响,对全电波暗室中辐射测试不确定度的研究具有重要意义。创新之处在于提出了一种互耦对辐射测试不确定度影响的分析方法,计算得出了暗室中辐射测试的远场条件,系统分析了电波暗室中互耦效应发生的机理,研究了偶极子天线之间互耦阻抗与天线间距的关系,以及天线辐射阻抗与增益的关系,得到影响辐射测试的关键不确定度因素。The purpose of this article is to study the influence of mutual coupling effect on the uncertainty of radiated disturbance test in full anechoic chamber.Starting from the typical dipole antenna,the relationship between mutual coupling effect and antenna spacing is studied.The farfield condition of radiation measurement in full anechoic chamber is obtained.This article analyzes the influence of various uncertainties on radiation test and site verification in anechoic chamber,which is important to research on the uncertainty of radiation measurement.The innovation is to put forward an analysis method of the influence of mutual coupling on the uncertainty of radiation test,analyze the mechanism of mutual coupling effect in anechoic chamber systematically,investigate the relationship between mutual coupling impedance and antenna spacing as well as the relationship between antenna radiation impedance and gain.Finally,the key uncertainty factors of radiation test are obtained.

关 键 词：互耦 电波暗室 偶极子 辐射 不确定度 

分 类 号：TM937.3[电气工程—电力电子与电力传动]