[SI-LIST] Re: Simple Rational Model Estimation Method Given Transfer Function
- From: "Yuriy Shlepnev" <shlepnev@xxxxxxxxxxxxx>
- To: "'eenville'" <csweet@xxxxxxxxxxxxxxx>, <si-list@xxxxxxxxxxxxx>
- Date: Wed, 31 Mar 2010 11:52:49 -0700
Charlie,
VECTFIT is the software for rational macro-modeling developed by Bjorn
Gustavsen - available at
http://www.energy.sintef.no/Produkt/VECTFIT/downloads.htm
Pretty much all fitting or rational macro-modeling tools in the industry are
based on the vectfit algorithm (though the performance and capabilities are
very different in each implementation).
Our free tool Simbeor 2008.01 L0 can be also used to build rational
macro-models for 2-port structures (available at
www.simberian.com/Downloads.php - item 2, the download requires registration
at our web site).
Best regards,
Yuriy Shlepnev
www.simberian.com
-----Original Message-----
From: si-list-bounce@xxxxxxxxxxxxx [mailto:si-list-bounce@xxxxxxxxxxxxx] On
Behalf Of eenville
Sent: Wednesday, March 31, 2010 11:31 AM
To: si-list@xxxxxxxxxxxxx
Subject: [SI-LIST] Simple Rational Model Estimation Method Given Transfer
Function
Any suggestions appreciated on simple, preferably open-source, tools to
develop a good (e.g., in a least-squares sense for both real and imaginary
components) low order rational model (i.e., pole/zero) given magnitude and
phase of a transfer function vs. frequency? The phase info is relatively
smooth but the roll-off and passband do not look like a second or even 3rd
order model would suffice.
Any ideas appreciated!
Thanks,
Charlie
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