摘要
针对信号完整性中的反射问题,运用Hyperlynx工具对失配时的反射进行仿真分析,结合反射理论进行计算,仿真结果与理论计算结果几乎一致,接收端仿真误差约为2.5%,驱动端仿真误差约1%。同时,对串联端接和戴维南端接进行了仿真分析和理论推算,理论与仿真高度切合,并对这两种端接匹配的典型时钟电路进行了实际测量,测量结果与仿真结果较为接近。研究表明仿真具有一定的准确性,恰当的运用仿真,可较为精准地模拟出实际的应用情况。通过对这两种端接匹配的批量仿真和理论分析,深层次理解反射和匹配的原理,总结出较为简单易行的仿真和应用技巧,便于简单又准确地利用仿真来指导应用。
Aiming at the problem of reflection in signal integrity,this paper uses the Hyperlynx to simulateand analyze the reflection when mismatch occurs. Combiningwith the reflection theory to calculate, the simulation results are almost the same as the theoretical results.The simulation error of the receiver is about 2.5%, and that of the driver is about 1%.Meanwhile, simulation analysis and theoretical calculation are carried out for the series termination and Thevenin termination, and the theory is highly consistent with the simulation. The typical clock circuit application of the two terminal matching are measured, and the results of measurement are close to the simulation results. Research shows that the simulation can reach to some degree of correctness, and appropriate simulation can more accurately simulate the actual application. Through batch simulation and theoretical analysis of these two terminal matching,the principle of reflection and matching is deeply understood, and relatively simple and feasible simulation and application methods are summarized, which is convenient for simply and accurately use simulation to guide application.
作者
陈全
张艳飞
杜晓华
Chen Quan;Zhang Yanfei;Du Xiaohua(Space Star Technology Co.,Ltd.(SST XI'AN),Xi'an 710049,China)
出处
《电子测量技术》
2019年第19期142-147,共6页
Electronic Measurement Technology
