상세정보
학술지
Application of VSI-EBG Structure to High-Speed Differential Signals for Wideband Suppression of Common-Mode Noise
- 발행일
- 201310
- 출처
- ETRI Journal, v.35 no.5, pp.827-837
- ISSN
- 1225-6463
- 출판사
- 한국전자통신연구원 (ETRI)
- 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.
- 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