Eliminating interior resonances in finite element-boundary integral methods for scattering

Author

Collins, Jeffery D. ; Jin, Jian-Ming ; Volakis, John L.

Author_Institution

Dept. of Electr. Eng. & Comput. Sci., Michigan Univ., Ann Arbor, MI, USA

Volume

40

Issue

12

fYear

1992

fDate

12/1/1992 12:00:00 AM

Firstpage

1583

Lastpage

1585

Abstract

A modification in the implementation of the finite-element-boundary-integral method is proposed for eliminating the interior cavity resonances. It is demonstrated that by using the scattered rather than the total field as the system variable, and by introducing a small loss in the propagation constant associated with the boundary integral equation, internal resonance effects are eliminated. Results are presented for two-dimensional problems with the finite element mesh terminated on a circular enclosure

Keywords

boundary-elements methods; electromagnetic wave scattering; finite element analysis; integral equations; circular enclosure; electromagnetic scattering; finite element mesh; finite element-boundary integral methods; interior cavity resonances; internal resonance elimination; propagation constant; two-dimensional problems; Antennas and propagation; Electromagnetic propagation; Electromagnetic scattering; Finite difference methods; Finite element methods; Humans; Impedance; Integral equations; Resonance; Time domain analysis;

fLanguage

English

Journal_Title

Antennas and Propagation, IEEE Transactions on

Publisher

ieee

ISSN

0018-926X

Type

jour

DOI

10.1109/8.204753

Filename

204753