Design and Fabrication of Broad-Band EMC Filter for Power Line

Kim, Dong-Il; Ku, Dong-Woo; Yang, Eun-Jung; Kim, Do-Yearn; Yea, Byeong-Deok

Journal of Navigation and Port Research 2002;26(5):525-528.
Published online December 31, 2002.

전원선에서의 광대역 EMC 필터의 설계 및 제작

김동일, 구동우, 양은정, 김도연, 예병덕

Design and Fabrication of Broad-Band EMC Filter for Power Line

Dong-Il Kim, Dong-Woo Ku, Eun-Jung Yang, Do-Yearn Kim, Byeong-Deok Yea

Abstract

The proposed EMC filter composed with feed-through capacitors and ferrite beads of high permeability was prepared which satisfy the EMC standard for a wide-band noise signal in the frequence of 10 ㎒ to 15 ㎓ in power supply line. The optimum structure of ferrite bead was found by calculating the load effect of ferrite beads. As a result, the jilter showed excellent differential-and common-mode noises filtering characteristics above 30 ㏈ in the frequency band from 10 ㎒ to 1.5 ㎓. The immunity characteristics are improved more than 10 to 30 ㏈ over the frequency band from DC to 1.8 ㎓.

Key Words: EMC;common-mode;differential-mode;feed-through capacitors;ferrite beads