[SI-LIST] : Differential Reflection Question

Lehew, John (John.Lehew@COMPAQ.com)
Wed, 1 Apr 1998 17:02:51 -0600

In the High Speed Digital Design book and in a few other places it
states the percent reflection caused by a difference in impedance is:

%Reflection=(Z1-Z2)/(Z1+Z2)

This formula is typically used to calculate the reflection of a single
line referenced to a ground plane. Does this formula also apply to
differential/balanced lines where two lines carry one signal?

Regards,

John Lehew
Design Engineer
Compaq