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

The Korean Institute of Electromagnetic Engineering and Science (한국전자파학회)
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Accurate SSN Analysis using Wideband Decoupling Capacitor Model

광대역 디커플링 캐패시터 모델을 이용한 정확한 SSN 분석

  • Published : 2001.12.01
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Abstract

Decoupling capacitors are commonly used to reduce the effect of SSN propagated through parallel power and ground planes in high-speed multilayer printed circuit boards (PCBs). In this paper, we introduced a simple high frequency measurement and proposed a wideband (50 MHz ∼3 GHz) equivalent circuit model for decoupling capacitor considering high frequency parasitic effects. The proposed model can be easily combined with the SPICE model of power supply planes far SSN analysis. The circuit simulations with the proposed model show good agreement with the measurement results. Also, we expect to accurately analyze the noise reduction effect as a function of value and location using the proposed model of decoupling capacitor.

고속 다층 인쇄 회로 기판의 전원 평면과 접지 평면을 통해 전파되는 SSN 잡음의 영향을 감소시키기 위하여 일반적으로 디커플링 캐패시터를 사용한다. 본 논문에서는 디커플링 캐패시터에 대한 간단한 고주파 측정 방법 을 제시하고 고주파 기생 성분들을 고려한 광대역 (50 MHz ~3 GHz) 등가 회로 모델을 제안하였다. 제안된 모델은 SSN의 영향을 분석하기 위한 전원 평면과 접지 평면의 SPICE 모델과 쉽게 결합할 수 있다. 제안된 모델이 연결된 회로 해석 결과는 측정 결과와 잘 일치하며, 제안된 모델을 이용한 회로 해석을 통해 디커플링 캐패시터 값에 따른 잡음 감소 효과를 빠르고 정확하게 분석할 수 있음을 확인하였다.

Keywords

References

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