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Ultra-Wideband and High-Gain Vivaldi Antenna with Artificial Electromagnetic Materials

An ultra-wideband and high-gain Vivaldi antenna with artificial electromagnetic material, suitable for ground-penetrating radar (GPR) systems, is proposed. Directors loaded inside the antenna gradient slot direct electromagnetic waves by inducing current to improve gain. The artificial electromagnet...

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Detalles Bibliográficos
Autores principales: Hu, Ruiyue, Zhang, Feng, Ye, Shengbo, Fang, Guangyou
Formato: Online Artículo Texto
Lenguaje:English
Publicado: MDPI 2023
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10384788/
https://www.ncbi.nlm.nih.gov/pubmed/37512640
http://dx.doi.org/10.3390/mi14071329
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author Hu, Ruiyue
Zhang, Feng
Ye, Shengbo
Fang, Guangyou
author_facet Hu, Ruiyue
Zhang, Feng
Ye, Shengbo
Fang, Guangyou
author_sort Hu, Ruiyue
collection PubMed
description An ultra-wideband and high-gain Vivaldi antenna with artificial electromagnetic material, suitable for ground-penetrating radar (GPR) systems, is proposed. Directors loaded inside the antenna gradient slot direct electromagnetic waves by inducing current to improve gain. The artificial electromagnetic material, also called metamaterial, is composed of multiple “H”-shaped units arranged in a certain regular pattern, loaded at the antenna aperture. The artificial electromagnetic units affect the antenna radiation waves by changing the refractive index to improve radiation directivity. The four Vivaldi units are arranged into a horn-shaped array, and each two units are orthogonally fed to realize dual polarization. Experimental results demonstrate that the antenna has good impedance matching of [Formula: see text] dB in 0.9–4 GHz, and the maximum realized gain can reach 15.2 dBi.
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spelling pubmed-103847882023-07-30 Ultra-Wideband and High-Gain Vivaldi Antenna with Artificial Electromagnetic Materials Hu, Ruiyue Zhang, Feng Ye, Shengbo Fang, Guangyou Micromachines (Basel) Article An ultra-wideband and high-gain Vivaldi antenna with artificial electromagnetic material, suitable for ground-penetrating radar (GPR) systems, is proposed. Directors loaded inside the antenna gradient slot direct electromagnetic waves by inducing current to improve gain. The artificial electromagnetic material, also called metamaterial, is composed of multiple “H”-shaped units arranged in a certain regular pattern, loaded at the antenna aperture. The artificial electromagnetic units affect the antenna radiation waves by changing the refractive index to improve radiation directivity. The four Vivaldi units are arranged into a horn-shaped array, and each two units are orthogonally fed to realize dual polarization. Experimental results demonstrate that the antenna has good impedance matching of [Formula: see text] dB in 0.9–4 GHz, and the maximum realized gain can reach 15.2 dBi. MDPI 2023-06-29 /pmc/articles/PMC10384788/ /pubmed/37512640 http://dx.doi.org/10.3390/mi14071329 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
Hu, Ruiyue
Zhang, Feng
Ye, Shengbo
Fang, Guangyou
Ultra-Wideband and High-Gain Vivaldi Antenna with Artificial Electromagnetic Materials
title Ultra-Wideband and High-Gain Vivaldi Antenna with Artificial Electromagnetic Materials
title_full Ultra-Wideband and High-Gain Vivaldi Antenna with Artificial Electromagnetic Materials
title_fullStr Ultra-Wideband and High-Gain Vivaldi Antenna with Artificial Electromagnetic Materials
title_full_unstemmed Ultra-Wideband and High-Gain Vivaldi Antenna with Artificial Electromagnetic Materials
title_short Ultra-Wideband and High-Gain Vivaldi Antenna with Artificial Electromagnetic Materials
title_sort ultra-wideband and high-gain vivaldi antenna with artificial electromagnetic materials
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10384788/
https://www.ncbi.nlm.nih.gov/pubmed/37512640
http://dx.doi.org/10.3390/mi14071329
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