Title :
Macromodeling of Multiport Systems Using a Fast Implementation of the Vector Fitting Method
Author :
Deschrijver, Dirk ; Mrozowski, Michal ; Dhaene, Tom ; De Zutter, Daniel
Author_Institution :
Dept. of Inf. Technol., Ghent Univ.-IBBT, Ghent
fDate :
6/1/2008 12:00:00 AM
Abstract :
Broadband macromodeling of large multiport systems by vector fitting can be time consuming and resource demanding when all elements of the system matrix share a common set of poles. This letter presents a robust approach which removes the sparsity of the block-structured least-squares equations by a direct application of the QR decomposition. A 60-port printed circuit board example illustrates that considerable savings in terms of computation time and memory requirements are obtained.
Keywords :
poles and zeros; printed circuits; QR decomposition; block-structured least-squares equations; broadband macromodeling; direct application; memory requirements; multiport systems; printed circuit board; sparsity; system matrix; vector fitting; Broadband macromodeling; numerical techniques; system identification; vector fitting (VF);
Journal_Title :
Microwave and Wireless Components Letters, IEEE
DOI :
10.1109/LMWC.2008.922585
