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Flexible and Polarization Independent Miniaturized Double-Band/Broadband Tunable Metamaterial Terahertz Filter

In this paper, the design of a double-band terahertz metamaterial filter with broadband characteristics using a single conducting layer is presented. The design uses a structured top metallic layer over a polyimide material. The proposed design has achieved broadband band-pass transmission character...

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Autores principales: Esakkimuthu, Manikandan, Jothinayagam, Inbarani, Arumugam, Karthigeyan, Pravin, Sheena Christabel, Jewariya, Mukesh
Formato: Online Artículo Texto
Lenguaje:English
Publicado: MDPI 2022
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9698017/
https://www.ncbi.nlm.nih.gov/pubmed/36431659
http://dx.doi.org/10.3390/ma15228174
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author Esakkimuthu, Manikandan
Jothinayagam, Inbarani
Arumugam, Karthigeyan
Pravin, Sheena Christabel
Jewariya, Mukesh
author_facet Esakkimuthu, Manikandan
Jothinayagam, Inbarani
Arumugam, Karthigeyan
Pravin, Sheena Christabel
Jewariya, Mukesh
author_sort Esakkimuthu, Manikandan
collection PubMed
description In this paper, the design of a double-band terahertz metamaterial filter with broadband characteristics using a single conducting layer is presented. The design uses a structured top metallic layer over a polyimide material. The proposed design has achieved broadband band-pass transmission characteristics at the resonances of 0.5 THz and 1.65 THz, respectively. The 3-dB bandwidths for these two resonances are 350 GHz and 700 GHz, respectively, which indicates that dual-band resonance with broadband transmission characteristics was obtained. The design has achieved the same transmission characteristics for two different orthogonal polarizations, which was confirmed using numerical simulation. The design was tested for a different angle of incidences and it was observed that this results in angle-independent transmission behavior. In addition, for obtaining tunable resonant behavior, the top conductor layer was replaced by graphene material and a silicon substrate was added below the polymer layer. By varying the Fermi level of graphene, modulation in amplitude and phase was observed in numerical simulation. The physical mechanism of double-band behavior was further confirmed by surface current distribution. The proposed design is simple to fabricate, compact, i.e., the size is λ(0)/8, and obtained dual-band/broadband operation.
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spelling pubmed-96980172022-11-26 Flexible and Polarization Independent Miniaturized Double-Band/Broadband Tunable Metamaterial Terahertz Filter Esakkimuthu, Manikandan Jothinayagam, Inbarani Arumugam, Karthigeyan Pravin, Sheena Christabel Jewariya, Mukesh Materials (Basel) Article In this paper, the design of a double-band terahertz metamaterial filter with broadband characteristics using a single conducting layer is presented. The design uses a structured top metallic layer over a polyimide material. The proposed design has achieved broadband band-pass transmission characteristics at the resonances of 0.5 THz and 1.65 THz, respectively. The 3-dB bandwidths for these two resonances are 350 GHz and 700 GHz, respectively, which indicates that dual-band resonance with broadband transmission characteristics was obtained. The design has achieved the same transmission characteristics for two different orthogonal polarizations, which was confirmed using numerical simulation. The design was tested for a different angle of incidences and it was observed that this results in angle-independent transmission behavior. In addition, for obtaining tunable resonant behavior, the top conductor layer was replaced by graphene material and a silicon substrate was added below the polymer layer. By varying the Fermi level of graphene, modulation in amplitude and phase was observed in numerical simulation. The physical mechanism of double-band behavior was further confirmed by surface current distribution. The proposed design is simple to fabricate, compact, i.e., the size is λ(0)/8, and obtained dual-band/broadband operation. MDPI 2022-11-17 /pmc/articles/PMC9698017/ /pubmed/36431659 http://dx.doi.org/10.3390/ma15228174 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
Esakkimuthu, Manikandan
Jothinayagam, Inbarani
Arumugam, Karthigeyan
Pravin, Sheena Christabel
Jewariya, Mukesh
Flexible and Polarization Independent Miniaturized Double-Band/Broadband Tunable Metamaterial Terahertz Filter
title Flexible and Polarization Independent Miniaturized Double-Band/Broadband Tunable Metamaterial Terahertz Filter
title_full Flexible and Polarization Independent Miniaturized Double-Band/Broadband Tunable Metamaterial Terahertz Filter
title_fullStr Flexible and Polarization Independent Miniaturized Double-Band/Broadband Tunable Metamaterial Terahertz Filter
title_full_unstemmed Flexible and Polarization Independent Miniaturized Double-Band/Broadband Tunable Metamaterial Terahertz Filter
title_short Flexible and Polarization Independent Miniaturized Double-Band/Broadband Tunable Metamaterial Terahertz Filter
title_sort flexible and polarization independent miniaturized double-band/broadband tunable metamaterial terahertz filter
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9698017/
https://www.ncbi.nlm.nih.gov/pubmed/36431659
http://dx.doi.org/10.3390/ma15228174
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