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Low Frequency Stable Integral Equation Method for Electromagnetic Scattering of Perfect Conductors and Dielectrics

Abstract:

In this paper we present an integral formulation for the calculation of scattering electromagnetic waves in presence of both perfect conductors and dielectrics. The integral formulation is of the second kind, therefore it is immune to high density mesh breakdown, and is stable in low frequency. The formulation uses the electric field as unknown. The resulting integral equation has no spurious resonances. The only drawback of the formulation is that the scattered magnetic field cannot be recovered in a stable way.