光波帯における誘電体ナノロッドアンテナの数値解析

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  • コウハタイ ニ オケル ユウデンタイ ナノロッドアンテナ ノ スウチ カイセキ

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Abstract

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A dielectric nanorod antenna is studied at optical wavelengths using the FDTD method. Consideration is first given to a modification of a metal-insulator-metal (MIM) waveguide for feeding. To efficiently excite the dielectric nanorod, we introduce a T-shaped exciter between the nanorod and the MIM waveguide. Next, the radiation characteristics of the dielectric nanorod antenna are evaluated in free space. It is found that a high directive gain of 10 dBi is obtained.

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