A generalized eigenvalue method for fdtd analyses
Date
1993-07
Authors
Ko, W. L.
Aksun, M. I.
Mittra, R.
Editor(s)
Advisor
Supervisor
Co-Advisor
Co-Supervisor
Instructor
Source Title
Microwave & Optical Technology Letters
Print ISSN
0895-2477
Electronic ISSN
1098-2760
Publisher
John Wiley & Sons
Volume
6
Issue
9
Pages
552 - 554
Language
English
Type
Journal Title
Journal ISSN
Volume Title
Series
Abstract
In this article we apply the generalized eigenvalue method (GEM) to extract the complex exponentials from a truncated time record computed by the finite‐difference time‐domain (FDTD) code for analyzing microwave integrated circuits. To obtain accurate scattering parameters without further FDTD computations, the truncated FDTD time record is efficiently extended into the future by summing the complex exponentials with complex coefficients determined by the least‐squares method. Numerical GEM results with fewer poles are shown to be in good agreement with those obtained by the Prony method with a large number of poles.