大规模高速背板的信号完整性设计与仿真羿吕宇等
2013年12月第44卷第4期(总第154期)
大规模高速背板的信号完整性设计与仿真
羿昌宇，祖翔宇
（中国航空无线电电子研究所，上海200241）
[摘要］本文首先从联合战术无线电系统的规模分析了设计大规模高速背板的必要性，同时从信号完整性方面分析了高速背板设计中所面临的问题，包括反射、串扰、损耗与衰减、电源完整性等儿个方面的机理及对PCB 设计造成的不良影响，并针对这儿个信号完整性问间题给出了相应的PCB设计准则，其次，针对一款基于串行 RapidIO高速总线的背板系统从PCB设计的层叠设计、布线设计、过孔设计等方面给出具体分析与设计方案。最后，通过Sigrity公司的PowerSI仿真软件、Synopsys公司的Hspice仿真软件和Quantum公司的QSI仿真软件进行信号完整性仿真和Ansoft公司的Siwave5.0仿真软件进行电源完整性仿真，通过仿真分析对PCB信号完整性进行验证与设计优化
[关键词］联合战术无线电系统；高速PCB设计；信号完整性；电源完整性；仿真
[中图分类号]TN391.9[文献标识码]A[D01编码】10.3969/j.issn.1006-141X.2013.04.01[文章编号]1006-141X（2013）04-0001-06
TheDesignandSignalIntegritySimulationforHighSpeed
Backplane
YIChang-yu,ZUXiang-yu
(China National Aeronautical Radio Electronics Research Institute, Shanghai 200241, China)
Abstract:In this paper, the necessity to design a large-scale high-speed backplane is analyzed from the perspective of Joint Tactical Radio System scale. Some problems of high speed backplane design are analyzed, including reflection, crosstalk, wastage and attenuation, power integrity etc, and some design principles are presented. An effective blueprint was designed for backplane system based on Serial RapidlO high-speed bus, analysis and scheme were given from the perspective of stack, wiring and drilling design. In the end, project signal integrity was analyzed by Power SI(Sigrity aeeaoeesee(a( Siwave5.0(Ansoft Co.) simulation software based on the simulation conclusion , in order to validate and optimize PCB signal integrity design
Key words: joint tactical radio system ; high-speed PCB design; signal integrity: power integrity; simulation
1引言
目前，在联合战术无线电系统中，多模块与主控资源模块、交换网络模块之间的数据和控制信号
.1.
都通过背板相连，背板的设计大都采用平行连接方式。随着新一代联合战术无线电系统容量的增大，模块数量逐渐增多，单个模块的端口容量和端口密度逐渐增大，模块间在背板上的连线密度、信号速