A Non-Conformal Implementation of Surface Integral Equations

Abstract

A non-conformal implementation of the surface integral equation methods is proposed for the analysis of electromagnetic scattering from perfect electrically conducting (PEC) objects. To relax the burden of geometrical modeling for complex objects, a partition-and-mesh methodology is adopted, where each partition can be meshed independently without considering the constraint of mesh conformity at the touching boundaries. Moreover, mixed triangle/quadrilateral elements are allowed in different partitions or even within the same partition. A recently developed reverse operation self-consistent evaluation approach is employed to evaluate the hyper-singular integrals caused by the free-space dyadic Green's function. Several numerical results are presented to validate the accuracy of the proposed method.