[SI-LIST] S-par and Spice

Dear all,
I have created a broadband model circuit, e.g. spice format, out of
S-parameter. The new S-parameter resulted from the spice file is only around
0.5% different from the original S-parameter.

I compared the original S-parameter and spice file in 1-tone and 2-tone
simulations.
In 2-tone simulation, the gains fit to each other very well. But not in the
1-tone simulation.
Could anybody give a comment?

thanks,
Saoer
NXP Semiconductors


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