紧缩型EMC暗室的NSA理论值分析  

Theoretical Normalized Site Attenuation Analysis of the Compact EMC Chamber

作　　者：刘庆华[1] 李民权[1] 

机构地区：[1]安徽大学,合肥230039

出　　处：《电子质量》2006年第2期61-63,共3页Electronics Quality

摘　　要：本文首先介绍了紧缩型电磁兼容(EMC)暗室归一化场地衰减(NSA)的测试方法和理论值的计算模型。然后定量的分析了采用3米法测量,计算结果与CISPR和ANSI中给出的标准值之差不大于±4dB;最后用NSA理论值计算模型,计算收发天线间距离为5米时的NSA值并与标准值比较,分析误差,结果满足测试精度要求。A NSA（the normalized site attenuation）measurement and theoretical calculation model of compact EMC chamber is firstly introduced in this paper.The difference between the calculating results and the standard NSA In CISPR end ANSI were not greater than ± 4dB,which using the 3m measuring methods Secondly. Finally, this paper caloulate the NSA when the distance between the transmit antenna and receive antenna is 5m, then compare the calculating results and the standard NSA to analyze the error,The results satisfy the measuring precision.

关 键 词：归一化场地衰减 电磁兼容 天线 测试场地 

分 类 号：TN03[电子电信—物理电子学]