Extraction of coupling parameters for microwave filters: determination of a stable rational model from scattering data
Résumé
We present a method to derive a rational model from scattering data for electrical parameter extraction. Unlike other methods, the stability and the MacMillan degree of the rational approximation are guaranteed. In order to improve the usability of our method in computer-aided tuning, we also present an algorithm performing automatic reference plane adjustment. Results obtained on a 10th order dual mode IMUX filter are presented.
Mots clés
computer-aided tuning
coupling parameters extraction
dual mode IMUX filter
electrical parameter extraction
microwave filters
rational approximation
scattering data
stability
stable rational model
CAD
S-parameters
approximation theory
electrical engineering computing
numerical stability
passive filters
tuning
MacMillan degree
automatic reference plane adjustment