登录
注册PCB Design Techniques for the SI and EMC of Gb/s Differential
ransmission Lines
Abstract:
Differential transmission lines are becoming very common on printed circuit boards
(PCBs),for carrying serial data at Gigabit/second(Gb/s) rates.It is usually assumed that
the electromagnetic compatibility(EMC) of such differential transmission lines will be
better than single-ended lines but in fact their EMC can easily be degraded by typical
PCB design and routing techniques-to the point where it can be little better than that
of single-ended lines.This paper presents an overview of the design problems for
through-hole-plate(THP) PCBs,and some solutions for maximising the signal integrity
(SI) and EMC of differential transmission lines operating at all data rates up to Gb/s.It is
presented in a style that can be readily understood and used by PCB designers.
Keywords:
differential transmission line,PCB,CM,DM,signal integrity
