横电磁波传输室电场纵向不均匀性分析
ANALYSIS OF LONGITUDINAL NONUNIFORMITY OF ELECTRIC FIELD DISTRIBUTION IN TEM CELLS
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摘要: 本文导出了横电磁波传输室(TEM Cell)电场的纵向不均匀性表达式。数值结果与M.L.Crawford(1977)的实验值吻合较好。该结果可用于校正测量探头位置偏差带来的测量误差,从而提高用TEM Cell进行电磁兼容性试验和天线探头校准的测量精度。Abstract: By utilizing transmission line theory, practical expressions for the longitudinal nonuniformity of the electric field distribution in TEM cells are obtained. Numerical results agree well with experimental ones shown by M. L. Crawford (1977) at some frequencies. The results presented can be applied in correcting errors caused by probe location deviation in the logitudinal direction so as to reach higher accuracies in EMC measurements and probe calibration with TEM cells.
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M. L. Crawford, IEEE Trans. on EMC, EMC-16(1974)4, 189-195.[2]蔡小丁,李家樾,北京邮电学院学报,11(1988)2,77.[3]Xiao-Ding Cai, Jia-Yue Li, Proc. IEE, Part H, 136(1989) 3, 191-194.[4]蔡小丁,李家樾,北京邮电学院学报,12(1989)3,17.[5]Xiao-Ding Cai, IEEE Trans. on EMC, EMC-31(1989)3, 209-217.[6]M. L. Crawford, J. L. Workman, C. Thomas, IEEE Trans. on IM, IM-26(1977)3, 225-230.[7]R. E.柯林,微波工程基础,人民邮电出版社,1981年,第82-87页. -
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