Novel High-Frequency Asymptotic Solutions in the Transition Regions near Geometrical Boundaries and near Caustics for Scattering by a Dielectric Cylinder(Basic Electromagnetic Analysis)(<Special Section>Wave Technologies for Wireless and Optical Communica

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概要

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• Novel high-frequency asymptotic solutions for the scattered fields by a dielectric circular cylinder with a radius of curvature sufficiently larger than the wavelength are presented in this paper. We shall derive the modified UTD (uniform Geometrical Theory of Diffraction) solution, which is applicable in the transition regions near the geometrical boundaries produced by the incident ray on the dielectric cylinder from the tangential direction. Also derived are the uniform geometrical ray solutions applicable near the geometrical boundaries and near the caustics produced by the ray family reflected on the internal concave boundary of the dielectrie cylinder. The validity and the utility of the uniform solutions are confirmed by comparing with the exact solution obtained from the eigenfuction expansion.

• 社団法人電子情報通信学会の論文
• 2004-09-01

著者

• Ida Teruhiko

  The Department Of Communication Engineering National Defense Academy

• Ishihara Toyohiko

  The Department Of Communication Engineering National Defense Academy

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• Novel High-Frequency Asymptotic Solutions in the Transition Regions near Geometrical Boundaries and near Caustics for Scattering by a Dielectric Cylinder(Basic Electromagnetic Analysis)(Wave Technologies for Wireless and Optical Communica

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