The Journal of Korean Institute of Electromagnetic Engineering and Science (한국전자파학회논문지)

The Korean Institute of Electromagnetic Engineering and Science (한국전자파학회)
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Method for High-Frequency Modeling of Common-Mode Choke

공통모드 초크의 간단한 고주파 모델링 기법

  • Jung, Hyeonjong (School of Electronics and Computer Engineering, Chonnam National University) ;
  • Yoon, Seok (School of Electronics and Computer Engineering, Chonnam National University) ;
  • Kim, Yuseon (LG Innotek) ;
  • Bae, Seok (LG Innotek) ;
  • Lim, Yeongseog (School of Electronics and Computer Engineering, Chonnam National University)
  • 정현종 (전남대학교 전자컴퓨터공학부) ;
  • 윤석 (전남대학교 전자컴퓨터공학부) ;
  • 김유선 (LG 이노텍) ;
  • 배석 (LG 이노텍) ;
  • 임영석 (전남대학교 전자컴퓨터공학부)
  • Received : 2017.09.28
  • Accepted : 2017.11.15
  • Published : 2017.12.29
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Abstract

In this paper, we analyze the effects of parasitic components of common-mode choke on the common mode and differential mode in a wide band, and we propose a simple method for high-frequency modeling. Common mode and differential mode 2-port networks were configured and the S-parameters in each mode were measured using a network analyzer. Equivalent circuit elements were extracted from the measured results to model a high-frequency equivalent circuit, and the validity was verified by comparing the measured S-parameters with the simulation results.

본 연구는 공통모드 초크의 기생 성분이 공통모드와 차동모드에 미치는 영향을 광대역에서 분석하고, 간단한 고주파 모델링 방법을 제시한다. 공통모드와 차동모드의 2-port 회로망을 각각 구성하여 각 모드에서의 S-parameter를 Network Analyzer로 측정하였다. 측정 결과로부터 등가회로 소자를 추출하여 고주파 등가회로를 모델링하고, 측정치와 시뮬레이션 결과를 비교함으로써 타당성을 검증하였다. 이는 정확하고 예측 가능한 EMI 필터를 설계하는데 적용될 수 있다.

Keywords

References

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