Abstract:
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We present the discretization in Method of Moments
of the Electric-Magnetic Field Integral Equation (EMFIE) with
the divergence-Taylor-Orthogonal basis functions, a facetoriented
set of basis functions. The EMFIE stands for a second
kind Integral Equation for the scattering analysis of Perfectly
conducting (PeC) objects, like the Magnetic-Field Integral
Equation (MFIE). We show for a sharp-edged conducting object
that the computed RCS with the divergence-Taylor-Orthogonal
discretization of the EMFIE offers better accuracy than the
conventional RWG discretization. Moreover, we present the
discretization with the divergence-Taylor-Orthogonal basis
functions of two second kind Integral Equations for penetrable
objects: (i) the well-known Müller formulation and (ii) the new
Müller Electric-Magnetic-Magnetic-Electric (Müller-EMME)
formulation. The dominant terms in the resulting matrices from
these formulations are derived, respectively, from the MFIE and
the EMFIE in the PeC case. We show RCS results for both
formulations for a dielectric sphere and validate them against the
computed RCS with the Poggio-Miller-Chang-Harrington-WuTsai
(PMCHWT) dielectric formulation. |