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1. Stabilizing the E-Field Integral Equation at the internal resonances through the computation of its numerical null space

Author

Salvatore Tringali and Giovanni Angiulli

Subjects
Discretization, Scattering, Mechanical Engineering, Computation, Operator (physics), Mathematical analysis, Method of moments (statistics), Condensed Matter Physics, Integral equation, Electronic, Optical and Magnetic Materials, Mechanics of Materials, Electric field, Electrical and Electronic Engineering, Cube, Mathematics
Abstract

In this paper a technique to protect the Method of Moments solution of the E-Field Integral Equation (EFIE) for the scattering by conducting body from effects of its internal resonances, is presented. This method is based on the evaluation of the numerical null space K of the discretized EFIE operator. In order to verify its effectiveness, results for the plane wave scattering from a perfect conducting cube are presented. It is shown that the proposed method is able to give the correct value of the RCS even in presence of the interior resonances.

Published
2010
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