用IEC 61000-4-20评定GTEM cell场均匀性的研究
Study on Validating the Field Homogeneity of the GTEM cell by
IEC 61000-4-20
摘要 介绍了IEC 61000-4-20对场均匀性的规定,并采用此标准附录B推荐的两种场均匀性评判准则对GTEM cell均匀区的场均匀性进行了评定,发现采用两种不同的评判准则时,GTEM cell场均匀性的符合性评定可能会获得不同的结论。对此结论产生的原因进行了分析,并提出了建议。
关键词 横电磁波器件;均匀区;极化电场;电磁场均匀性
Abstract This article introduces the requirements for the electromagnetic field
uniformity in IEC 61000-4-20 and two methods are used to analyze the field
homogeneity of the uniform area of the GTEM cell which are recommend by Annex B in
IEC 61000-4-20. The authors found two methods possibly result in two different
conclusions to validate whether the uniformity of the GTEM cell can be meet the
requirements of 61000-4-20.The cause of different conclusions is analyzed and some
suggestions are given in the end.
Keywords transverse electromagnetic (TEM) waveguide;uniform area;polarized
electric field;electromagnetic field uniformity
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