A Computational Method for Modeling Arbitrary Junctions Employing Different Surface Integral Equation Formulations for Three-Dimensional Scattering and Radiation Problems Hipólito Gómez-Sousa1, Óscar Rubiños-López1, José Ángel Martínez-Lorenzo2 and Marcos Arias-Acuña1 1Department of Signal Theory and Communications, University of Vigo, EI de Telecomunicación, ES 36310 Vigo, Spain. {hgomez, oscar, marcos}@com.uvigo.es 2Northeastern University, 360 Huntington Ave., Suite 302 Stearns Center, Boston, MA 02115, USA.
[email protected] arXiv:1510.05596v1 [physics.comp-ph] 19 Oct 2015 A computational method for modeling arbitrary junctions employing different surface integral equation formulations for three-dimensional scattering and radiation problems a a b a H. G´omez-Sousa , O.´ Rubi˜nos-L´opez ∗, J. A.´ Mart´ınez-Lorenzo ∗ and M. Arias-Acu˜na aDept. of Signal Theory and Communications, University of Vigo, EI de Telecomunicaci´on, ES 36310 Vigo, Spain; bNortheastern University, 360 Huntington Ave., Suite 302 Stearns Center, Boston, MA 02115, USA This paper presents a new method, based on the well-known method of moments (MoM), for the numerical electromagnetic analysis of scattering and radiation from metallic or dielectric structures, or both structure types in the same simulation, that are in contact with other metallic or dielectric structures. The proposed method for solving the MoM junction problem consists of two separate algorithms, one of which comprises a generalization for bodies in contact of the surface integral equation (SIE) formulations. Unlike some other published SIE generalizations in the field of computational electromagnetics, this generalization does not require duplicating unknowns on the dielectric separation surfaces. Additionally, this generalization is applicable to any ordinary single-scatterer SIE formulations employed as baseline.