Graphene based metamaterial lens for terahertz applications

2017 Japan-Africa Conference on Electronics, Communications and Computers (JAC-ECC) Pub Date : 2017-12-01 DOI:10.1109/JEC-ECC.2017.8305798

S. Zainud-Deen, H. Malhat, A. M. Mabrouk

{"title":"Graphene based metamaterial lens for terahertz applications","authors":"S. Zainud-Deen, H. Malhat, A. M. Mabrouk","doi":"10.1109/JEC-ECC.2017.8305798","DOIUrl":null,"url":null,"abstract":"This paper introduces a graphene metamaterial transmitarray designed for terahertz applications. The unit-cell element is a multilayered metamaterial structure of a graphene split ring resonator (SRR) with two variable gaps with tunable conductivity. The metamaterial properties of the unit-cell element are investigated from 0.74 THz to 0.94 THz for different conductivities of the graphene material. A parametric study of the transmission properties of the metamaterial unit-cell element is investigated. The radiation characteristics of 169 unit-cell elements of the three layers graphene metamaterial lenses are analyzed for different applied DC voltages. The gain and side-lobe level of the proposed lens are improved by using an averaging process on the transmission phase used for array construction. The lens introduces a high gain of about 18.5 dB at frequencies 0.83 THz, 0.85 THz, and 0.86 THz for chemical potentials = 0.4eV, 0.5 eV, and 0.8eV, respectively. A full wave simulation is used to design and analyze the radiation characteristics of the graphene based metamaterial lens.","PeriodicalId":406498,"journal":{"name":"2017 Japan-Africa Conference on Electronics, Communications and Computers (JAC-ECC)","volume":"19 1","pages":"0"},"PeriodicalIF":0.0000,"publicationDate":"2017-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"1","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"2017 Japan-Africa Conference on Electronics, Communications and Computers (JAC-ECC)","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.1109/JEC-ECC.2017.8305798","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}

引用次数: 1

Abstract

This paper introduces a graphene metamaterial transmitarray designed for terahertz applications. The unit-cell element is a multilayered metamaterial structure of a graphene split ring resonator (SRR) with two variable gaps with tunable conductivity. The metamaterial properties of the unit-cell element are investigated from 0.74 THz to 0.94 THz for different conductivities of the graphene material. A parametric study of the transmission properties of the metamaterial unit-cell element is investigated. The radiation characteristics of 169 unit-cell elements of the three layers graphene metamaterial lenses are analyzed for different applied DC voltages. The gain and side-lobe level of the proposed lens are improved by using an averaging process on the transmission phase used for array construction. The lens introduces a high gain of about 18.5 dB at frequencies 0.83 THz, 0.85 THz, and 0.86 THz for chemical potentials = 0.4eV, 0.5 eV, and 0.8eV, respectively. A full wave simulation is used to design and analyze the radiation characteristics of the graphene based metamaterial lens.

查看原文本刊更多论文

用于太赫兹应用的石墨烯基超材料透镜

本文介绍了一种用于太赫兹应用的石墨烯超材料发射阵列。单元元件是石墨烯分裂环谐振器(SRR)的多层超材料结构，具有两个可变间隙，电导率可调。在0.74 THz至0.94 THz范围内，对石墨烯材料的不同电导率进行了超材料性能研究。对超材料单元元件的传输特性进行了参数化研究。分析了三层石墨烯超材料透镜169个单元元在不同直流电压下的辐射特性。通过对用于阵列构造的传输相位进行平均处理，提高了该透镜的增益和旁瓣电平。当化学势分别为0.4eV、0.5 eV和0.8eV时，该透镜在0.83 THz、0.85 THz和0.86 THz频率下可获得约18.5 dB的高增益。采用全波模拟的方法设计和分析了石墨烯基超材料透镜的辐射特性。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

求助全文

约1分钟内获得全文求助全文

来源期刊

2017 Japan-Africa Conference on Electronics, Communications and Computers (JAC-ECC)

自引率

0.00%

发文量