Fast algorithm for electromagnetic solution of modified-geometry problems

Abstract

A fast algorithm is presented for the full-wave electromagnetic scattering solution of a class of modified-geometry problems. The algorithm assumes that the solution for a scattering structure, which, in general, may be composed of multiple scatterers, is known and stored. With the addition of a new scatterer to the problem this algorithm avoids the solution of the modified problem from the beginning, but instead, makes used of stored solution of the original structure.