Modeling Strategy for EMI Filters

Ruijie He, Yang Xu, Sameer Walunj, Shaohui Yong, Victor Khilkevich, David Pommerenke, Hermann L. Aichele, Martin Boettcher, Philipp Hillenbrand, Andreas Klaedtke

Research output: Contribution to journalArticlepeer-review


Performance of electromagnetic interference (EMI) filters in power-electronics applications is limited by the parasitic coupling between the components of the filters and the self-parasitic of each component. While these parasitic effects can be partially taken into account on the circuit level, it is difficult to estimate their values. In this article, a full-wave modeling methodology is proposed to predict the performance of a complete EMI filter up to 1 GHz. Following the proposed methodology, the mutual couplings among the EMI filter components are taken into account as well as the self-parasitics of each individual component. Experiments and simulations are carried out to validate the modeling methodology. A self-parasitic cancellation technique is also applied to demonstrate the benefits of three-dimensional modeling methodology in EMI filter design
Original languageEnglish
Article number9139265
Pages (from-to)1572-1581
Number of pages10
JournalIEEE Transactions on Electromagnetic Compatibility
Issue number4
Publication statusPublished - Aug 2020
Externally publishedYes


  • Common-mode choke (CMC)
  • EMI filter
  • film capacitor
  • full-wave modeling
  • mutual coupling

ASJC Scopus subject areas

  • Condensed Matter Physics
  • Atomic and Molecular Physics, and Optics
  • Electrical and Electronic Engineering


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