Volume potential-integral-equation formulation for electromagnetic scattering by dielectric objects

Abstract

A volume potential-integral-equation formulation for electromagnetic scattering by dielectric objects is developed and discretized with fully continuous nodal basis functions. The equations are tested with either the point-matching or Galerkin's testing procedure. Galerkin's testing shows superior accuracy over the point-matching as well as over the standard discretization of the electric field volume integral equation with Schaubert-Wilton-Glisson (SWG) functions. The potential formulation is accelerated by the precorrected-FFT method.