Pasi Ylä-Oijala

TL;DR: In this article, the singularity extraction method was used to evaluate the impedance matrix elements of the combined field integral equation (CFIE) with these basis and test functions, and all singularities were extracted and calculated in closed form and numerical integration was applied only for regular functions.

TL;DR: Combined field integral equation (CFIE) is applied for computing electromagnetic scattering by arbitrarily shaped three dimensional dielectric and composite objects in this paper, where the authors present a CFIE formulation which can be used in the analysis of piecewise dielectrics and composite metallic objects with junctions, and properly choosing the coupling coefficients of the equations the conditioning of the discretized matrix equation can be essentially improved and rapidly converging iterative solutions can be obtained even without preconditioning.

TL;DR: The surface integral equation method greatly simplifies the treatment of composite objects with multiple metallic and dielectric regions and junctions since the boundary conditions are separated from the discretization and integral equation formulation.

TL;DR: In this paper, a stable frequency domain surface integral equation formulation for the three dimensional electromagnetic scattering of composite metallic and dielectric objects is proposed, which does not suffer from the low frequency breakdown and leads to a well balanced and stable system on a wide frequency band.

TL;DR: In this paper, the authors show that the low-frequency breakdown associated to the MoM solution of scattering by dielectric objects can be avoided by the classical Muller formulation without the loop-tree or loop-star basis functions.