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학술지 Application of VSI-EBG Structure to High-Speed Differential Signals for Wideband Suppression of Common-Mode Noise
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저자
김명회, 김석진, 배범희, 조종현, 김정호, 김재훈, 안도섭
발행일
201310
출처
ETRI Journal, v.35 no.5, pp.827-837
ISSN
1225-6463
출판사
한국전자통신연구원 (ETRI)
DOI
https://dx.doi.org/10.4218/etrij.13.0112.0875
협약과제
12PR1200, 통해기 위성 Ka대역 통신탑재체 우주인증 및 실용화 검증기술 개발, 안도섭
초록
In this paper, we present wideband common-mode (CM) noise suppression using a vertical stepped impedance electromagnetic bandgap (VSI-EBG) structure for high-speed differential signals in multilayer printed circuit boards. This technique is an original design that enables us to apply the VSI-EBG structure to differential signals without sacrificing the differential characteristics. In addition, the analytical dispersion equations for the bandgap prediction of the CM propagation in the VSIEBG structure are extracted, and the closed-form expressions for the bandgap cutoff frequencies are derived. Based on the dispersion equations, the effects of the impedance ratio, the EBG patch length, and via inductances on the bandgap of the VSI-EBG structure for differential signals are thoroughly examined. The proposed dispersion equations are verified through agreement with the full-wave simulation results. It is experimentally demonstrated that the proposed VSI-EBG structure for differential signaling suppresses the CM noise in the wideband frequency range without degrading the differential characteristics. © 2013 ETRI.
키워드
Common-mode noise, Differential signal, EBG, Electromagnetic bandgap, Stepped impedance, VSIE BG
KSP 제안 키워드
CM noise, Closed-form expressions, Common-mode noise, Cut-off frequency, Differential characteristics, Dispersion equations, EBG structure, Electromagnetic BandGap(EBG), Frequency Range, Full-wave simulation, High Speed