Iterative solutions of MFIE for computing electromagnetic scattering of large open-ended cavities

Author

Rodriguez, J.L. ; Obelleiro, F. ; Pino, A.G.

Author_Institution

ETSI Telecomunicacion, Vigo Univ., Spain

Volume

144

Issue

2

fYear

1997

fDate

4/1/1997 12:00:00 AM

Firstpage

141

Lastpage

144

Abstract

The analysis of high-frequency scattering from electrically large open cavities is addressed. A magnetic-field integral equation (MFIE) for the equivalent currents on the interior cavity walls is obtained and solved by two different algorithms based on the high-frequency principles of physical optics (PO). Once the currents are known, the scattered fields are obtained by using aperture integration (AI) in the cavity mouth, or a reciprocity integral (RI) over a surface close to the termination. Numerical results are presented which demonstrate the convergence and accuracy of the proposed methods, by comparison with a modal reference solution

Keywords

convergence of numerical methods; electric current; electromagnetic wave scattering; integral equations; iterative methods; magnetic fields; physical optics; MFIE; PO; accuracy; algorithms; aperture integration; cavity mouth; convergence; electrically large open cavities; electromagnetic scattering; equivalent currents; high-frequency principles; high-frequency scattering; interior cavity walls; iterative solutions; large open-ended cavities; magnetic field integral equation; modal reference solution; physical optics; reciprocity integral; scattered fields; termination;

fLanguage

English

Journal_Title

Microwaves, Antennas and Propagation, IEE Proceedings

Publisher

iet

ISSN

1350-2417

Type

jour

DOI

10.1049/ip-map:19970964

Filename

587449