Title :
Computer code for passivity enforcement of rational macromodels
Author :
Gustavsen, Bjorn
Author_Institution :
SINTEF Energy Res., Trondheim, Norway
Abstract :
This paper describes a public domain routine QPpassive.m for passivity enforcement of rational multi-port macromodels using constrained least squares approximation. The procedure calculates a correction to the original macromodel by adjusting the residues and constant term as a postprocessing step while minimizing the resulting change in the frequency domain. The code allows to reduce the computation time by limiting the number of free variables in the constraint problem. Different constraint types and weighting schemes are available.
Keywords :
frequency-domain analysis; integrated circuit modelling; least squares approximations; multiport networks; network analysis; QPpassive.m; computer code; constrained least squares approximation; passivity enforcement; public domain routine; rational macromodel; rational multiport macromodel; Circuit simulation; Computational modeling; Eigenvalues and eigenfunctions; Equations; Frequency dependence; Frequency domain analysis; Impedance; Least squares approximation; Mathematical model; Robustness;
Conference_Titel :
Signal Propagation on Interconnects, 2005. Proceedings. 9th IEEE Workshop on
Print_ISBN :
0-7803-9054-7
DOI :
10.1109/SPI.2005.1500916
