Fast waveguide eigen-analysis by wideband finite-element model order reduction
Journal
IEEE Transactions on Microwave Theory and Techniques
Journal Volume
53
Journal Issue
8
Pages
2552-2558
Date Issued
2005-08
Author(s)
Abstract
An efficient method for fast wide-band eigenmode analysis is presented in this paper. The finite-element solution space is projected to a subspace containing frequency-dependent information obtained at a single frequency by a Lanczos algorithm and modified perturbation theory, resulting in a single-point reduced-order model accurate over an extremely wide frequency range. A numerical procedure is developed to extract a desired mode from the reduced-order model for fast frequency sweep and is then applied to several practical problems, which demonstrate the solution accuracy and computational efficiency of the proposed method. © 2005 IEEE.
Subjects
Coplanar waveguide (CPW); Finite-element method; Microstrip line; Microwave waveguide; Model-order reduction; Non-Hermitian Lanczos algorithm
Other Subjects
Algorithms; Computational methods; Eigenvalues and eigenfunctions; Finite element method; Information retrieval; Mathematical models; Microstrip lines; Microwave waveguides; Model-order reduction; Non-Hermitian Lanczos algorithms; Solution accuracy; Waveguides
Type
journal article