Protecting EFIEbased scattering computations from effects of interior resonances
Abstract
A numerical method, based on the standard matrix formulation of the electric field integral equation (EFIE) for calculating the scattering from conducting bodies near resonant frequencies, is given for both stabilizing the numerical calculations and finding the form of the resonant fields. When this method is used along with a direct solution to the original matrix equation, it requires insignificant additional computation. An additional advantage of this approach is that it can easily be implemented in existing computer codes by using a single, standard but general, plugin module.
 Publication:

IEEE Transactions on Antennas and Propagation
 Pub Date:
 November 1991
 DOI:
 10.1109/8.102767
 Bibcode:
 1991ITAP...39.1545C
 Keywords:

 Cavity Resonators;
 Electric Conductors;
 Electric Fields;
 Integral Equations;
 Radar Cross Sections;
 Radar Scattering;
 Matrices (Mathematics);
 Resonant Frequencies;
 Communications and Radar