Angle-insensitive co-polarized metamaterial absorber based on equivalent circuit analysis for dual band WiFi applications

Abstract A novel and systematic procedure to design a co-polarized electromagnetic metamaterial (MM) absorber with desired outputs and resonance frequencies for dual-band WiFi signal absorption is presented. The desired resonance frequencies with expected S parameters' values were first designe...

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Autores principales:	Saif Hannan, Mohammad Tariqul Islam, Mohammad Rashed Iqbal Faruque, Muhammad E. H. Chowdhury, Farayi Musharavati
Formato:	article
Lenguaje:	EN
Publicado:	Nature Portfolio 2021
Materias:	Medicine R Science Q
Acceso en línea:	https://doaj.org/article/5404858336754980baea7a2cd83227e8
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spelling	oai:doaj.org-article:5404858336754980baea7a2cd83227e82021-12-02T18:18:59ZAngle-insensitive co-polarized metamaterial absorber based on equivalent circuit analysis for dual band WiFi applications10.1038/s41598-021-93322-52045-2322https://doaj.org/article/5404858336754980baea7a2cd83227e82021-07-01T00:00:00Zhttps://doi.org/10.1038/s41598-021-93322-5https://doaj.org/toc/2045-2322Abstract A novel and systematic procedure to design a co-polarized electromagnetic metamaterial (MM) absorber with desired outputs and resonance frequencies for dual-band WiFi signal absorption is presented. The desired resonance frequencies with expected S parameters' values were first designed as an equivalent circuit with extensive analysis and then implemented into frequency-selective MM absorber by numerical simulation with precise LRC elements, satisfying least unit cell area (0.08λ), substrate thickness (0.01λ) and maximum effective medium ratio (12.49). The absorber was simulated for the maximum angle of incidence for both the normal and oblique incidences at co-polarization. The absorptions at the desired resonance frequencies were found at a satisfactory level by both simulation and practical measurement along with a single negative value to ensure metamaterial characteristics. The proposed equivalent circuit analysis approach can help researchers design and engineering co-polarization insensitive MM absorbers using conventional split-ring resonators, with perfection in output and desired resonance frequencies without the necessity of lumped elements or multilayer substrates. The proposed metamaterial can be utilized for SAR reduction, crowdsensing, and other WiFi-related practical applications.Saif HannanMohammad Tariqul IslamMohammad Rashed Iqbal FaruqueMuhammad E. H. ChowdhuryFarayi MusharavatiNature PortfolioarticleMedicineRScienceQENScientific Reports, Vol 11, Iss 1, Pp 1-13 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine R Science Q
spellingShingle	Medicine R Science Q Saif Hannan Mohammad Tariqul Islam Mohammad Rashed Iqbal Faruque Muhammad E. H. Chowdhury Farayi Musharavati Angle-insensitive co-polarized metamaterial absorber based on equivalent circuit analysis for dual band WiFi applications
description	Abstract A novel and systematic procedure to design a co-polarized electromagnetic metamaterial (MM) absorber with desired outputs and resonance frequencies for dual-band WiFi signal absorption is presented. The desired resonance frequencies with expected S parameters' values were first designed as an equivalent circuit with extensive analysis and then implemented into frequency-selective MM absorber by numerical simulation with precise LRC elements, satisfying least unit cell area (0.08λ), substrate thickness (0.01λ) and maximum effective medium ratio (12.49). The absorber was simulated for the maximum angle of incidence for both the normal and oblique incidences at co-polarization. The absorptions at the desired resonance frequencies were found at a satisfactory level by both simulation and practical measurement along with a single negative value to ensure metamaterial characteristics. The proposed equivalent circuit analysis approach can help researchers design and engineering co-polarization insensitive MM absorbers using conventional split-ring resonators, with perfection in output and desired resonance frequencies without the necessity of lumped elements or multilayer substrates. The proposed metamaterial can be utilized for SAR reduction, crowdsensing, and other WiFi-related practical applications.
format	article
author	Saif Hannan Mohammad Tariqul Islam Mohammad Rashed Iqbal Faruque Muhammad E. H. Chowdhury Farayi Musharavati
author_facet	Saif Hannan Mohammad Tariqul Islam Mohammad Rashed Iqbal Faruque Muhammad E. H. Chowdhury Farayi Musharavati
author_sort	Saif Hannan
title	Angle-insensitive co-polarized metamaterial absorber based on equivalent circuit analysis for dual band WiFi applications
title_short	Angle-insensitive co-polarized metamaterial absorber based on equivalent circuit analysis for dual band WiFi applications
title_full	Angle-insensitive co-polarized metamaterial absorber based on equivalent circuit analysis for dual band WiFi applications
title_fullStr	Angle-insensitive co-polarized metamaterial absorber based on equivalent circuit analysis for dual band WiFi applications
title_full_unstemmed	Angle-insensitive co-polarized metamaterial absorber based on equivalent circuit analysis for dual band WiFi applications
title_sort	angle-insensitive co-polarized metamaterial absorber based on equivalent circuit analysis for dual band wifi applications
publisher	Nature Portfolio
publishDate	2021
url	https://doaj.org/article/5404858336754980baea7a2cd83227e8
work_keys_str_mv	AT saifhannan angleinsensitivecopolarizedmetamaterialabsorberbasedonequivalentcircuitanalysisfordualbandwifiapplications AT mohammadtariqulislam angleinsensitivecopolarizedmetamaterialabsorberbasedonequivalentcircuitanalysisfordualbandwifiapplications AT mohammadrashediqbalfaruque angleinsensitivecopolarizedmetamaterialabsorberbasedonequivalentcircuitanalysisfordualbandwifiapplications AT muhammadehchowdhury angleinsensitivecopolarizedmetamaterialabsorberbasedonequivalentcircuitanalysisfordualbandwifiapplications AT farayimusharavati angleinsensitivecopolarizedmetamaterialabsorberbasedonequivalentcircuitanalysisfordualbandwifiapplications
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Angle-insensitive co-polarized metamaterial absorber based on equivalent circuit analysis for dual band WiFi applications

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