现代电子技术Issue(10)：144-146,149,4.
高速PCB板谐振仿真与分析
Simulation and analysis of high-speed PCB resonance
孟晶 1俞能杰1
作者信息
- 1. 航天恒星科技有限公司，北京 100086
- 折叠
摘要
Abstract
Resonance is a major problem of power integrity. If the resonance amplitude between PCB power planes is too large,it may cause PDS work abnormal,even cause the power planes to become EMI emitter,so in the detailed PCB design stage,simulation analysis of resonance and eliminating resonance are needed for improving the success rate of the design. To eliminate resonance,first,the SIWAVE is used to simulate and analyze the resonance between the power planes to find the reso-nance point,and then the decoupling capacitor is selected and layouted reasonably,so as to eliminate the influence caused by the resonance below 400 MHz frequency,and eliminate the influence caused by the resonance above 400 MHz frequency by ad-justing the PCB overlayers and the space between overlayers. Based on engineering experience,a rapid calculation method to es-timate the value of the decoupling capacitors was achieved. Its correctness was proved with simulation analysis on example.关键词
电源完整性/谐振/SIWAVE仿真分析/去耦电容Key words
power integrity/resonance/SIWAVE simulating and analysis/decoupling capacitor分类
信息技术与安全科学引用本文复制引用
孟晶,俞能杰..高速PCB板谐振仿真与分析[J].现代电子技术,2014,(10):144-146,149,4.
