A high-performance slotted bow-tie nano graphene antenna for optical frequency application with silicon lens and stacked aligning layers

被引：1

作者：

Chowdhury A. ^{[1
]}

Ranjan P. ^{[2
]}

机构：

[1] Calcutta Institute of Technology, West Bengal, Uluberia

[2] University of Engineering and Management, Rajasthan, Jaipur

来源：

Optik | 2024年 / 308卷

关键词：

Gain; Graphene; Nanoantenna; Optical frequency; Silicon lens; THz antenna;

D O I：

10.1016/j.ijleo.2024.171840

中图分类号：

学科分类号：

摘要：

A new Graphene nano-antenna has been designed and proposed in this paper for optical frequency applications with optimized gain performance. The proposed design uses a Silicon Lens and subsequent layers to match the dielectric constant between the antenna and air. The different patch materials are taken and studied for better results. The proposed antenna has been simulated upon a Highly resistive silicon substrate having a high dielectric constant of 11.9. The base of the proposed antenna is designed on a square substrate of 6000μm length and 300μm height. The slotted “bow-tie” antenna is placed on it with an aperture area of 156.8μm × 42μm. A silicon layer is placed over it for improved performance. Further, it has been optimized by placing 16 stacked aligning layers to match the dielectric constants. The gain and efficiency improvement are achieved after each layer or coating over the lens. The resonant frequencies obtained are 0.4THz, 1THz, and 2.2THz having triple bands. The maximum gain obtained is 36.89 dB and the maximum radiation efficiency is 97%. HFSS 21.0 software is the used environment for the simulation and optimization. © 2024 Elsevier GmbH

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