An approximate (symmetric) magnetic field integral equation for the analysis of scattering by conducting bodies

Author

Correia, L.M. ; Barbosa, A.M.

Author_Institution

Inst. Superior Tecnico, Univ. Tecnica de Lisboa, Portugal

fYear

1990

fDate

7-11 May 1990

Firstpage

902

Abstract

The approximate (symmetric) magnetic field integral equation A(S)MFIE is introduced. The coefficients of the associated matrix are evaluated by taking the average of the opposite coefficients (with respect to the main diagonal) of the original MFIE matrix. In order to assess the A(S)MFIE, numerical results are presented (back and forward scattering cross sections) for a cube and a sphere. The A(S)MFIE makes it possible to save CPU time and computer memory in comparison with the MFIE. In comparing the scattering cross sections obtained from both equations, a small error was found, which suggests that the A(S)MFIE can be used to analyze the scattering from objects with dimensions below the resonance region.<>

Keywords

computational complexity; electromagnetic field theory; electromagnetic wave scattering; integral equations; A(S)MFIE; CPU time; MFIE matrix; approximate (symmetric) magnetic field integral equation; computer memory; conducting cube; conducting sphere; electromagnetic scattering; matrix coefficients; resonance region; scattering cross sections; Integral equations; Magnetic analysis; Magnetic fields; Moment methods; Resonance; Scattering; Symmetric matrices; Testing;

fLanguage

English

Publisher

ieee

Conference_Titel

Antennas and Propagation Society International Symposium, 1990. AP-S. Merging Technologies for the 90's. Digest.

Conference_Location

Dallas, TX, USA

Type

conf

DOI

10.1109/APS.1990.115254

Filename

115254