[SI-LIST] rational function approximation
- From: Amitava Bhaduri <bhadhua@xxxxxxxxxxxx>
- To: si-list@xxxxxxxxxxxxx
- Date: Thu, 15 Apr 2004 17:29:09 -0400 (EDT)
Hi,
Using a full-wave tool I have been able to generate an impedance matrix of
an N-port interconnect and later converted the Z matrix into S-parameters.
Using "nport" from spectre I tried connecting the generated parametric
data to the remaining device netlist of the circuit. But the simulation
doesn't work due to stability and passivity problem. I have generated the
impedance data for 10 frquency points.
I have learnt that using rational function approximation the passivity of
the network can be ensured, but I am not sure how to proceed with that
with Z-matrix (or S-matrix) in hand. Can anyone suggest ways or the
necessary steps that I have to folow in order to make the interconnect
network passive and use it with spectre circuit simulator. Is it possible
to use MATLAB to do this rational function approximation and if it is,
then how do I do it?
Thanks in advance,
Amitava
Amitava Bhaduri
Research Assistant
527 ERC
University of Cincinnati
OH - 45220
ph(lab) : 513-556-3025
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