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Four
Matlab-based packages are available for download:
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VFIT3.zip cointains version 1.0 of vectfit3 (routine: vectfit3.m).
The examples show how to fit scalars, columns and entire matrices,
and how to formulate the model in the form of state-space models and
pole-residue models.
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Matrix Fitting Toolbox contains a complete procedure for multi-port
rational modeling from frequency domain data.. It is applicable to
both Y-parameter and S-parameter data sets. Rational fitting and
passivity enforcement is achieved by two subsequent function calls.
The fitting procedure is based on vector fitting (vectfit3.m) while
the passivity enforcement is based on perturbation of residue matrix
eigenvalues with passivity assessment by half-size test matrices. A
routine is avilable for generating netlist for ATP-EMTP.
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