准确测量EMC用双锥天线的天线系数

内容简介：阐述了用自由空间天线系数对于产品辐射骚扰测试的原因,介绍了测量自由空间天线系数的几种方法,包括即将于2012年发布的CISPR 16-1-6 CD2中双锥天线的天线系数的最新测量方法,以及目前应用比较广泛的ANSI C 63.5：2006中的方法。结合一系列实测数据总结了如何提高测量准确性的一些实用措施,如电缆的选用、衰减器的作用、测量仪器以及背景噪声抑制措施等。

Abstract：A comprehensive comparison and analysis have been made on how to measure the free space antenna factor of biconical antennas.The essential role of free space antenna factor（FAFS） to EMI is expatiated;then the related methods to measure FAFS are introduced,including CISPR 16-1-6 CD2 and ANSI C 63.5,based on lots of measurements.Some improvement techniques have been introduced to make accurate measurement in a narrow OATS（40 m×12 m） for biconical antennas,which is validated by comparing the results with that measured in an OATS of 60 m×30 m.

作者：孟东林,

关键词：天线系数, 标准场地法, 开阔场, 双锥天线,