Study on Prediction Models of EMI Filter with Near-field Coupling Effect

摘要：

　　With the electromagnetic compatibility(EMC)standard becoming more stringent,the EMI filter plays an important role for reducing the electromagnetic interference(EMI).Therefore,it needs an accurate model of EMI filter to predict its attenuation characteristic for more easily improving performance in design step.In this paper,we proposed respectively differential-mode and common-mode models for EMI filter.We used the method of impedance curve fitting to extract the parasitic parameters of the equivalent circuits,and used the electromagnetic finite element simulation to analyze and obtain the near-field coupling coefficients in the EMI filter.Finally,we used the comparison between simulated and measured S21 parameters to verify the accuracy of modeling methods for EMI filter.

关键词： filter Electromagnetic interference (EMI) differential-mode common-mode near-field coupling effect

作者: Na Wang Zhaowen Yan Jun Tang Zhaoming Ning Biao Xiao Hui Wang

作者单位: School of Electronic and Information Engineering,Beihang University,Beijing,China State Key Laboratory of Air-conditioning Equipment and System Energy Conservation,Zhuhai,China

会议类型: 国际会议

会议名称: The 12th International Symposium Antennas, Propagation, and EM Theory(ISAPE 2018)?(第十二届天线、传播与电磁理论国际学术会议)

会议地点: 杭州

会议语种:英文

页码: 1-5

在线出版日期: 2018-12-03（万方平台首次上网日期，不代表论文的发表时间）