A Model Order Reduction Method for the Finite-Element Simulation of Inhomogeneous Waveguides

Author

Schultschik, Alwin ; Farle, Ortwin ; Dyczij-Edlinger, Romanus

Author_Institution

Dept. of Phys. & Mechatron., Saarland Univ., Saarbrucken

Volume

44

Issue

6

fYear

2008

fDate

6/1/2008 12:00:00 AM

Firstpage

1394

Lastpage

1397

Abstract

A finite-element-based model order reduction method for the broadband analysis of the dominant modes of transversally inhomogeneous waveguides is presented. We show that the sub-space projections used in conventional multipoint methods may result in spurious modes in the reduced-order model and propose an improved formulation to overcome this problem. The suggested method achieves error levels comparable to those of the underlying finite-element method, while overall solution times are significantly smaller.

Keywords

eigenvalues and eigenfunctions; electromagnetic fields; finite element analysis; inhomogeneous media; reduced order systems; waveguide theory; broadband analysis; eigenvalue problems; electromagnetic fields; finite-element simulation; model order reduction method; multipoint methods; reduced-order model; spurious modes; subspace projections; transversally inhomogeneous waveguides; Eigenvalue problems; electromagnetic fields; finite-element methods (FEMs); model order reduction;

fLanguage

English

Journal_Title

Magnetics, IEEE Transactions on

Publisher

ieee

ISSN

0018-9464

Type

jour

DOI

10.1109/TMAG.2007.915800

Filename

4526994