高速PCB上同步开关噪声抑制的多级电容法  

Method for the Suppression of Simultaneous Switching Noise with Multi-stage Capacitors in High-Speed PCB

作　　者：曲咏哲[1] 李玉山[1] 丁同浩[1] 闫旭[1] 

机构地区：[1]西安电子科技大学电路CAD研究所,西安710071

出　　处：《电子科技大学学报》2013年第2期229-233,共5页Journal of University of Electronic Science and Technology of China

基　　金：国家自然科学基金(60672027;60871072);教育部博士点基金(20050701002)

摘　　要：基于微波网络理论,研究了同步开关噪声的传播与抑制,提出了一种新的抑制噪声传播的多级电容法,研究表明该方法采用多列分布电容和增大噪声路径传输损耗能够有效地抑制噪声的传播,提高电容噪声抑制的效率。通过FDTD仿真和测试结果验证了该方法的有效性,并给出了多级电容法抑制噪声的应用规则。The transmission and suppression of the simultaneous switching noise （SSN） are investigated based on microwave network principle. A new method for the suppression of the noise transmission with multi-stage capacitors is presented in this paper. The design rules of the method with multi-stage capacitors are derived. The simulation results show that using the multi-row distributed capacitors and increasing transmission loss of noise path could improve the ability to suppress the noise transmission and increase the efficiency of the noise suppression with capacitors. Finally, the performance of the method is verified with finite difference time domain（FDTD） simulations and measured results.

关 键 词：电容 时域有限差分 电源 地平面 同步开关噪声 传输损耗 

分 类 号：TN401[电子电信—微电子学与固体电子学]