Plasmonic Nano-antenna Optimization Using Characteristic Mode Analysis

Published

January 3, 2020

Author(s)

Edward Garboczi, Sumitra Dey, Deb Chatterjee, Ahmed M. Hassan

Abstract

Plasmonic nano-antennas are typically designed using RF-inspired parametric optimization process and/or using trial and error search algorithms which lack proper physical insight. In this study, we demonstrate how the Characteristic Mode Analysis (CMA) approach can be used for the optimization of a nano-antenna. A complex geometry termed as the Split-Ring two-wire Antenna (SRA) is selected, and in this work we show how CMA can be used for the systematic optimization of the structure to achieve certain goals. The CMA identifies the structure's dominant modes, at the frequency of interest, and the dependency of these modes on the structure's shape, size and material. Using this dependency, we show how the shape and material of the SRA can be efficiently optimized to yield enhanced performance. This proposed method of design and optimization using CMA can be easily adapted for many applications facilitating the development of nano-antennas in general.

Citation

IEEE Transactions on Antennas and Propagation

Volume

68

Issue

1

Pub Type

Journals

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DOI Link

Keywords

Plasmonic, Nano-structures / Nano-antennas, Characteristic Mode Analysis (CMA), Surface integral Equation (SIE), Method of Moments (MOM), Split-ring two-wire Antenna (SRA)

Citation

Garboczi, E. , Dey, S. , Chatterjee, D. and Hassan, A. (2020), Plasmonic Nano-antenna Optimization Using Characteristic Mode Analysis, IEEE Transactions on Antennas and Propagation, [online], https://doi.org/10.1109/TAP.2019.2938705 (Accessed December 13, 2024)