Title :
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
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;
Conference_Titel :
Antennas and Propagation Society International Symposium, 1990. AP-S. Merging Technologies for the 90's. Digest.
Conference_Location :
Dallas, TX, USA
DOI :
10.1109/APS.1990.115254
