高速电路设计中的信号完整性问题研究
Study of Signal Integrity in High Speed Circuit Design
Abstract
随着现代电子技术的不断发展，高速电路的应用范围日益扩大，系统工作速率也在迅速提高。对于传输速率达几百Mbps甚至数Gbps的高速数字信号，其有效频谱已扩展至微波波段，在复杂互连系统中传输时已表现出明显的波特性。这时互连结构的不连续及它们之间的耦合将会引起信号的延迟、反射、衰减、串扰等信号完整性问题。使得理论上可行的系统设计在实际应用中往往无法达到预期性能，甚至不能正常工作。随着系统复杂度的上升，电路板的布局布线密度也随之提高，信号完整性问题更为凸显，在国内外已受到广泛的重视，并成为一个研究热点。信号完整性问题本质上是电磁场问题，本文从电磁场角度出发，深入研究了高速电路设计中存在的信号完整性问题... With the continuous development of modern electronic technology, the application range of high-speed circuits is widening and the speed of systems is also rising rapidly. For high-speed digital signals with data rate up to several hundred Mbps or even several Gbps, their effective frequency spectrum has been extended to microwave band. Then the discontinuity and coupling between the interconnect s...