半电波暗室不同测试距离辐射场强的换算模型  

Conversion of Radiated Field Strength at Different Distance in Semi-anechoic Chamber

作　　者：扈罗全[1] 陆全荣[1] 

机构地区：[1]苏州出入境检验检疫局,江苏苏州215104

出　　处：《中国电子科学研究院学报》2010年第3期282-285,共4页Journal of China Academy of Electronics and Information Technology

基　　金：国家自然科学基金项目(60772061);江苏出入境检验检疫局科研项目(2010KJ22;2009KJ14);江苏省自然科学基金项目(BK2009567)资助课题

摘　　要：分析了使用半电波暗室测量不同距离处辐射场强之间的换算关系。首先介绍基于对数距离路径损耗得到的经验模型,然后通过计算不同发射/接收天线间距的归一化场地衰减(NSA)差值,得到了对同一场地和不同场地的不同测试距离处辐射场强理论模型。对不同场地的工程模型进行讨论,并且使用实验数据分析了不同测试距离处辐射场强的换算关系。实验结果表明,不适宜引入确定性修正因子,对待测物在3 m和10 m法半电波暗室的测试结果进行转换。The conversion of radiated field strength at different distance in semi-anechoic chamber is analyzed.Firstly,the experience model based on the logarithmic distance path loss is introduced.Second,the theoretical models of radiation field at different distances through calculating the difference of the normalized site attenuation（NSA） with different transmit/receive antenna distances,in the same and different sites,are obtained.The engineering model in the different sites is also discussed.The experimental data is used to analyze the conversion of radiation field strength at different distances.The experimental results show that it is not appropriate to introduce a determinate correction factor in dealing with the conversion of the measurement in the 3 m and 10 m semi-anechoic chambers.

关 键 词：电磁兼容 半电波暗室 归一化场地衰减 辐射场强 

分 类 号：TM930.12[电气工程—电力电子与电力传动]