Integral-equation study of ray effects and natural-mode resonances in a 2-D dielectric prism
Sukharevsky, Ilya O.
Proceedings of the 9th European Conference on Antennas and Propagation, EuCAP 2015
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We analyze the interplay of two different types of electromagnetic behavior demonstrated by a 2-D dielectric prism: Geometrical Optics and resonance. As it is shown, the first is responsible, for instance, for enhanced reflection from an isosceles 90-degree prism of arbitrary epsilon and size, if illuminated from the base. The second is responsible for the peaks in the total scattering and absorption cross-sections (RCS) at the natural-mode frequencies. The numerical model is based on Nystrom discretization of Muller-type integral equations that provides guarantied convergence.
KeywordsBoundary integral equations