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Broadband Metasurface Absorber Based on an Optimal Combination of Copper Tiles and Chip Resistors

In this study, a broadband metasurface absorber composed of an optimal combination of copper tiles connected with four chip resistors is designed and experimentally verified. After fixing the locations of the chip resistors and setting their resistances to 100 [Formula: see text] , the genetic algor...

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Autores principales: Kim, Yongjune, Lee, Jeong-Hae
Formato: Online Artículo Texto
Lenguaje:English
Publicado: MDPI 2023
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10095628/
https://www.ncbi.nlm.nih.gov/pubmed/37048986
http://dx.doi.org/10.3390/ma16072692
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author Kim, Yongjune
Lee, Jeong-Hae
author_facet Kim, Yongjune
Lee, Jeong-Hae
author_sort Kim, Yongjune
collection PubMed
description In this study, a broadband metasurface absorber composed of an optimal combination of copper tiles connected with four chip resistors is designed and experimentally verified. After fixing the locations of the chip resistors and setting their resistances to 100 [Formula: see text] , the genetic algorithm (GA) is utilized to design the optimal copper tile pattern for broadband absorption. The optimal combination of the copper tiles is identified by determining the states of the square tile pairs between copper or air, depending on the one or zero states of the bit sequence created by GA, respectively. The full-wave simulation results of the optimized metasurface absorber confirmed a [Formula: see text] dB reflectance bandwidth within the frequency range of 6.57 to 12.73 GHz for the normal incidence condition, with the fractional bandwidth being [Formula: see text]. The accuracy of the metasurface absorber was verified through an experimental result that matched well with the full-wave simulated one.
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spelling pubmed-100956282023-04-13 Broadband Metasurface Absorber Based on an Optimal Combination of Copper Tiles and Chip Resistors Kim, Yongjune Lee, Jeong-Hae Materials (Basel) Article In this study, a broadband metasurface absorber composed of an optimal combination of copper tiles connected with four chip resistors is designed and experimentally verified. After fixing the locations of the chip resistors and setting their resistances to 100 [Formula: see text] , the genetic algorithm (GA) is utilized to design the optimal copper tile pattern for broadband absorption. The optimal combination of the copper tiles is identified by determining the states of the square tile pairs between copper or air, depending on the one or zero states of the bit sequence created by GA, respectively. The full-wave simulation results of the optimized metasurface absorber confirmed a [Formula: see text] dB reflectance bandwidth within the frequency range of 6.57 to 12.73 GHz for the normal incidence condition, with the fractional bandwidth being [Formula: see text]. The accuracy of the metasurface absorber was verified through an experimental result that matched well with the full-wave simulated one. MDPI 2023-03-28 /pmc/articles/PMC10095628/ /pubmed/37048986 http://dx.doi.org/10.3390/ma16072692 Text en © 2023 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
Kim, Yongjune
Lee, Jeong-Hae
Broadband Metasurface Absorber Based on an Optimal Combination of Copper Tiles and Chip Resistors
title Broadband Metasurface Absorber Based on an Optimal Combination of Copper Tiles and Chip Resistors
title_full Broadband Metasurface Absorber Based on an Optimal Combination of Copper Tiles and Chip Resistors
title_fullStr Broadband Metasurface Absorber Based on an Optimal Combination of Copper Tiles and Chip Resistors
title_full_unstemmed Broadband Metasurface Absorber Based on an Optimal Combination of Copper Tiles and Chip Resistors
title_short Broadband Metasurface Absorber Based on an Optimal Combination of Copper Tiles and Chip Resistors
title_sort broadband metasurface absorber based on an optimal combination of copper tiles and chip resistors
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10095628/
https://www.ncbi.nlm.nih.gov/pubmed/37048986
http://dx.doi.org/10.3390/ma16072692
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