[SI-LIST] Re: time domain simulation of s-parameter

Can you clarify what results from Power SI you try to fit into ADS ?
Is it an extracted interconnect channel model with limited number of =
ports and start off with nominal impedance close to 50 ohm for the =
channels ?
Or is it one of those power/ground SSO model with large number of ports =
with impedance substantially lower than the 50 ohm ?
You chances of success should be very high in the first case and will be =
difficult in the second case.
But one can argue if you have a complicated power distribution impedance =
profile around your frequency of interest, you have a bigger problem =
than getting your simulation run converge, you have a real power =
distribution problem.
Chris

-----Original Message-----
From: si-list-bounce@xxxxxxxxxxxxx
[mailto:si-list-bounce@xxxxxxxxxxxxx]On Behalf Of Sanjeev Gupta
Sent: Tuesday, November 27, 2007 6:49 AM
To: si-list@xxxxxxxxxxxxx
Subject: [SI-LIST] time domain simulation of s-parameter



Hello All
I am trying to do time domain simulation using Agilent ADS after
extracting
s-parameter model from Power SI.
But, i am getting lot of convergence issue. Simulation gets
terminated immediately.  I do not get any time domain waveform.
kindly suggest a solution.. which tool can solve such problem very
efficiently?
Thanks in advanve
Sanjeev


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