高速差分信号耦合方式的信号完整性研究
The signal integrity analysis of coupling method of high-speed differential signal
冯立 1刘亚军 1钱自富 1刘松 1唐缨 2王伟业 2邱小华2
作者信息
- 1. 四川九洲电器集团有限责任公司,四川 绵阳 621000;四川省航电系统产品轻量化设计与制造工程实验室,四川 绵阳 621000
- 2. 广东依顿电子科技股份有限公司,广东 中山 528400
- 折叠
摘要
差分信号因具有抗干扰能力强、可实现远距离传输等优点,被广泛应用于以太网、高速串行等总线印制电路设计.针对差分信号的耦合方式,采用ANSYS仿真软件进行建模仿真分析.结果表明,线宽/间距为0.406 4 mm/0.812 8 mm的差分信号插入损耗较小,采用更大线间距的差分信号有利于减少高速信号的损耗.对比3种连接器的不同间距,在8 GHz范围内,增加差分信号之间的局部间距,差分插入损耗变化不明显,说明增加差分信号之间的局部间距不会降低差分信号传输损耗.
Abstract
Differential signals are widely used in printed circuit designs,such as Ethernet and high-speed serial bus due to their strong anti-interference ability and the ability to achieve long-distance transmission.This article uses ANSYS simulation software to model and analyze the coupling method of differential signals.The results show that differential signals with line width/spacing of 0.406 4 mm/0.812 8 mm have smaller insertion losses,and using differential signals with larger line spacing is more conducive to reducing the loss of high-speed signals.By comparing the different spacing of three connectors,within the 8 GHz range,increasing the local spacings between differential signals does not result in significant changes in differential insertion loss,indicating that increasing the local spacing between differential signals will not reduce the transmission loss of differential signals.
关键词
差分信号/耦合方式/S参数/信号完整性Key words
differential signal/coupling method/S parameter/signal integrity引用本文复制引用
出版年
2024
NETL
NSTL
维普
万方数据