Re: Modeling - Fast Tr

Fred (fred@contec.contec.COM)
Thu, 5 Sep 1996 14:46:24 +0800

I do not agree with Ed. S parameters of a passive device such as a connectors are
accurate enough. The beauty of S parameters are the simplicity. S parameters can
apply over a wide frequency range....much greater than a digital devices bandwidth.
And as mentioned there are tools that can take S parameter tables taken over a broad
frequency range and convert these into useful models that are ideal to use in a non linear
simulator such as Spice. And....S parameters DO CONTAIN INFORMATION ABOUT COUPLING if the
measurement instruments can measure n-ports. S parameters cannot be applied to the
digital switching transistors because of their non-linearities.

Best Regards,

Fred Balistreri