3-Simplex interpolation of the mixed-potential Green´s functions in layered media

Author

Francavilla, M.A. ; Wilton, D.R. ; Paulotto, S. ; Jackson, D.R.

Author_Institution

Antenna & EMC Lab. (LACE), Ist. Superiore Mario Boella (ISMB), Torino, Italy

fYear

2011

Firstpage

2711

Lastpage

2715

Abstract

The dyadic Green´s functions arising from the Method of Moments (MoM) discretization for problems involving layered media require the computation of costly Sommerfeld integrals. Here we propose a scheme to efficiently interpolate the regularized Green´s functions by means of a first-order extraction of the singularities. The interpolation scheme is performed in a barycentric coordinate system, which further improves its efficiency. Numerical experiments are presented in order to show the effectiveness of the approach in reducing the matrix filling time.

Keywords

Green´s function methods; antennas; function approximation; inhomogeneous media; interpolation; matrix algebra; method of moments; 3-simplex interpolation scheme; Sommerfeld integral; barycentric coordinate system; dyadic Green´s function; first order extraction; layered media; matrix filling time; method of moments discretization; mixed potential Green´s function; numerical experiment; regularized Green´s function; stake antenna; Accuracy; Antennas; Current distribution; Geometry; Interpolation; Moment methods; Nonhomogeneous media;

fLanguage

English

Publisher

ieee

Conference_Titel

Antennas and Propagation (EUCAP), Proceedings of the 5th European Conference on

Print_ISBN

978-1-4577-0250-1

Type

conf

Filename

5782139