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An Active Electromagnetically Induced Transparency (EIT) Metamaterial Based on Conductive Coupling

In this paper, we demonstrate an active metamaterial manifesting electromagnetically induced transparency (EIT) effect in the microwave regime. The metamaterial unit cell consists of a double-cross structure, between which a varactor diode is integrated. The capacitance of the diode is controlled by...

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Detalles Bibliográficos
Autores principales: Zhang, Wu, Lin, Jiahan, Fang, Xiaohui, Lin, Yanxiao, Wang, Kai, Zhang, Meng
Formato: Online Artículo Texto
Lenguaje:English
Publicado: MDPI 2022
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9606948/
https://www.ncbi.nlm.nih.gov/pubmed/36295435
http://dx.doi.org/10.3390/ma15207371
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author Zhang, Wu
Lin, Jiahan
Fang, Xiaohui
Lin, Yanxiao
Wang, Kai
Zhang, Meng
author_facet Zhang, Wu
Lin, Jiahan
Fang, Xiaohui
Lin, Yanxiao
Wang, Kai
Zhang, Meng
author_sort Zhang, Wu
collection PubMed
description In this paper, we demonstrate an active metamaterial manifesting electromagnetically induced transparency (EIT) effect in the microwave regime. The metamaterial unit cell consists of a double-cross structure, between which a varactor diode is integrated. The capacitance of the diode is controlled by a reversed electrical bias voltage supplied through two connected strip lines. The diode behaves as a radiative resonant mode and the strip lines as a non-radiative resonant mode. The two modes destructively interference with each other through conductive coupling, which leads to a transmission peak in EIT effect. Through electrical control of the diode capacitance, the transmission peak frequency is shifted from 7.4 GHz to 8.7 GHz, and the peak-to-dip ratio is tuned from 1.02 to 1.66, demonstrating a significant tunability.
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spelling pubmed-96069482022-10-28 An Active Electromagnetically Induced Transparency (EIT) Metamaterial Based on Conductive Coupling Zhang, Wu Lin, Jiahan Fang, Xiaohui Lin, Yanxiao Wang, Kai Zhang, Meng Materials (Basel) Article In this paper, we demonstrate an active metamaterial manifesting electromagnetically induced transparency (EIT) effect in the microwave regime. The metamaterial unit cell consists of a double-cross structure, between which a varactor diode is integrated. The capacitance of the diode is controlled by a reversed electrical bias voltage supplied through two connected strip lines. The diode behaves as a radiative resonant mode and the strip lines as a non-radiative resonant mode. The two modes destructively interference with each other through conductive coupling, which leads to a transmission peak in EIT effect. Through electrical control of the diode capacitance, the transmission peak frequency is shifted from 7.4 GHz to 8.7 GHz, and the peak-to-dip ratio is tuned from 1.02 to 1.66, demonstrating a significant tunability. MDPI 2022-10-21 /pmc/articles/PMC9606948/ /pubmed/36295435 http://dx.doi.org/10.3390/ma15207371 Text en © 2022 by the authors. https://creativecommons.org/licenses/by/4.0/Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (https://creativecommons.org/licenses/by/4.0/).
spellingShingle Article
Zhang, Wu
Lin, Jiahan
Fang, Xiaohui
Lin, Yanxiao
Wang, Kai
Zhang, Meng
An Active Electromagnetically Induced Transparency (EIT) Metamaterial Based on Conductive Coupling
title An Active Electromagnetically Induced Transparency (EIT) Metamaterial Based on Conductive Coupling
title_full An Active Electromagnetically Induced Transparency (EIT) Metamaterial Based on Conductive Coupling
title_fullStr An Active Electromagnetically Induced Transparency (EIT) Metamaterial Based on Conductive Coupling
title_full_unstemmed An Active Electromagnetically Induced Transparency (EIT) Metamaterial Based on Conductive Coupling
title_short An Active Electromagnetically Induced Transparency (EIT) Metamaterial Based on Conductive Coupling
title_sort active electromagnetically induced transparency (eit) metamaterial based on conductive coupling
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9606948/
https://www.ncbi.nlm.nih.gov/pubmed/36295435
http://dx.doi.org/10.3390/ma15207371
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