Title :
Robust rational function approximation algorithm for model generation
Author :
Coelho, Carlos P. ; Phillips, Joel R. ; Silveira, L. Miguel
Author_Institution :
Dept. of Electr. & Comput. Eng., INESC/Cadence Eur. Labs., Lisbon, Portugal
Abstract :
The problem of computing rational function approximations to tabulated frequency data is of paramount importance in the modeling arena. In this paper, we present a method for generating a state space model from tabular data in the frequency domain that solves some of the numerical difficulties associated with the traditional fitting techniques used in linear least squares approximations. An extension to the MIMO case is also derived
Keywords :
MIMO systems; circuit optimisation; circuit simulation; frequency-domain analysis; function approximation; least squares approximations; microwave filters; rational functions; state-space methods; surface acoustic wave filters; MIMO case; RF circuit components; SAW filter; circuit-level simulation; fitting techniques; frequency domain; linear least squares approximations; model generation; numerical difficulties; robust rational function approximation algorithm; state space model; tabulated frequency data; Approximation algorithms; Circuits; Frequency; Function approximation; Least squares approximation; Least squares methods; Microwave communication; Power system modeling; Robustness; State-space methods;
Conference_Titel :
Design Automation Conference, 1999. Proceedings. 36th
Conference_Location :
New Orleans, LA
Print_ISBN :
1-58113-092-9
DOI :
10.1109/DAC.1999.781313
