Small Hemielliptic Dielectric Lens Antenna Analysis in 2-D: Boundary Integral Equations Versus Geometrical and Physical Optics
作者： A.I. Nosich , A.V. Boriskin , R. Sauleau , G. Godi
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摘要: We assess the accuracy and relevance of numerical algorithms based on principles geometrical optics (GO) physical (PO) in analysis reduced-size homogeneous dielectric lenses prone to behave as open resonators. As a benchmark solution, we use Muller boundary integral equations (MBIEs) discretized with trigonometric Galerkin scheme that has guaranteed fast convergence well controllable accuracy. The lens cross-section is chosen typical for practical applications, namely an extended hemiellipse whose eccentricity satisfies GO focusing condition. concerns made rexolite, fused quartz, silicon size varying between 3 20 wavelengths free space. consider 2D case both - -polarized plane waves under normal oblique incidence, compare characteristics near fields.
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