矩形谐振腔串扰抑制方法研究  

Study of rectangular-shaped resonators method to suppress crosstalk

作　　者：刘子瑜[1] 李晋文[1] 

机构地区：[1]国防科学技术大学计算机学院,湖南长沙410073

出　　处：《计算机工程与科学》2014年第12期2367-2372,共6页Computer Engineering & Science

基　　金：国家973计划资助项目(2009CB723803);国家自然科学基金资助项目(60873120)

摘　　要：在高速数字系统中,信号完整性问题越来越突出,信号速率和设计密度的不断提高使得串扰上升为主要因素之一。先研究了基于矩形谐振腔的串扰抑制方法;然后与三倍线宽方法(3W方法)和有过孔接地的防护线方法的对比分析表明,矩形谐振腔方法对微带线间近端串扰的抑制能力不理想,但对远端串扰的抑制非常有效,在频域仿真中远端串扰幅度可提高12dB和8dB,在时域仿真中远端串扰峰值分别为前两种方法的18.2%和23.1%;最后进一步研究了矩形谐振腔的结构参数(间距、长度和宽度)对远端串扰的影响,发现这三个参数存在一组最优值,能最大程度地减小远端串扰。In high speed digital systems, signal integrity problems become more and more obvious, the increase of signal rate and design density make crosstalk be one of the major factors. Firstly,the rec- tangular-shaped resonators method to suppress crosstalk is studied. Secondly,this method is compared with the 3W rule method and the guard trace method with shorting via,and the comparison results illus- trate that the rectangular-shaped resonators method works bad for suppressing near-end crosstalk of the coupled microstrip lines but works good for suppressing far-end crosstalk of the coupled microstrip lines. The frequency-domain simulation shows that the far-end crosstalk of the rectangular-shaped resonators structure is increased by 12 dB and 8 dB respectively,the time domain simulation shows that the peak of far-end erosstalk voltage of rectangular-shaped resonators structure is improved to be 18.2 % and 23.1 of that of the 3W rule method and the guard trace method with shorting via. Finally,how the structural parameters （gap between the rectangular-shaped resonators, length and width） of rectangular-shaped re- sonators affect the far-end crosstalk of the coupled microstrip lines is studied. The simulation results demonstrate that there is a group of optimized values for the three structural parameters to suppressing the far-end crosstalk the most effectively.

关 键 词：串扰 矩形谐振腔 抑制方法 

分 类 号：TP302[自动化与计算机技术—计算机系统结构]