Computation of EFIE matrix entries with singular basis functions

Abstract

The use of singular basis functions enhances the convergence of method-of-moments (MoM) solutions for structures containing edges. While standard algorithms for computing the MoM matrix entries treat Green's function singularities, these are not well-suited for integrating the singular basis functions: Conventional quadrature routines exhibit slow convergence and may produce inaccurate results. In this paper, new algorithms are proposed for handling the combination of edge singularities and Green's function singularities on quadrilateral cells.