Improved integral formulations for fast 3-D method-of-moments solvers

Fast-multipole and precorrected-FFT accelerated iterative methods have substantially improved the efficiency of method-of-moments (MOM) based 3D electromagnetic analysis programs. In this paper, we present a novel second-kind integral formulation and discretization approach for electrostatic analysis, as well as a projection technique for electroquasistatic analysis. We show that when these new approaches are combined with a multipole-accelerated iterative solver, the result is a more accurate and efficient solver.