Ultrawideband Cross-Polarization Converter Using Anisotropic Reflective Metasurface

Broadband metasurface-based devices are essential and indispensable in modern wireless communication systems. This paper presents an ultra−wideband and wide incident angle reflective cross−polarization converter metasurface. The unit cell of the proposed structure is a 45° rotated anisotropic meta−s...

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Main Authors: Tauqir Ahmad, Arbab Abdur Rahim, Rana Muhammad Hasan Bilal, Adnan Noor, Husnul Maab, Muhammad Ashar Naveed, Abdullah Madni, Muhammad Mahmood Ali, Muhammad Ahsan Saeed
Format: Article
Language:English
Published: MDPI AG 2022-02-01
Series:Electronics
Subjects:
Online Access:https://www.mdpi.com/2079-9292/11/3/487
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author Tauqir Ahmad
Arbab Abdur Rahim
Rana Muhammad Hasan Bilal
Adnan Noor
Husnul Maab
Muhammad Ashar Naveed
Abdullah Madni
Muhammad Mahmood Ali
Muhammad Ahsan Saeed
author_facet Tauqir Ahmad
Arbab Abdur Rahim
Rana Muhammad Hasan Bilal
Adnan Noor
Husnul Maab
Muhammad Ashar Naveed
Abdullah Madni
Muhammad Mahmood Ali
Muhammad Ahsan Saeed
author_sort Tauqir Ahmad
collection DOAJ
description Broadband metasurface-based devices are essential and indispensable in modern wireless communication systems. This paper presents an ultra−wideband and wide incident angle reflective cross−polarization converter metasurface. The unit cell of the proposed structure is a 45° rotated anisotropic meta−sheet developed by cutting the rhombus−shaped patch from the central part of the square patch. The unit cell’s top structure and ground blocking sheet are made of copper, whereas a dielectric substrate (FR−4) is used as an intermediate spacer between them. The unit cell thickness is minimal compared to the operating wavelength (<inline-formula><math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><semantics><mrow><mn>1</mn><mo>/</mo><mn>14</mn><msub><mi mathvariant="sans-serif">λ</mi><mo>∘</mo></msub></mrow></semantics></math></inline-formula>, where <inline-formula><math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><semantics><mrow><msub><mi mathvariant="sans-serif">λ</mi><mo>∘</mo></msub></mrow></semantics></math></inline-formula> is the wavelength of the starting frequency of 13 GHz of the operating band). The proposed structure efficiently converts linearly polarized waves into their orthogonal component, with a polarization conversion ratio of (<i>PCR</i> > 90%) over a broad frequency spectrum of 13 GHz to 26 GHz. The physical origin of polarization conversion is also depicted using surface current distribution plots. An ultra−wideband and highly efficient polarization conversion (above 90%) is achieved with the help of strong electromagnetic resonance coupling between the upper and lower layer of the metasurface. This kind of ultra−wideband polarization conversion metasurface can be employed in satellite communication, radar cross−section reduction, and navigation systems.
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spelling doaj.art-b54d747321b94b6da70400225bddcaf22023-11-23T16:17:43ZengMDPI AGElectronics2079-92922022-02-0111348710.3390/electronics11030487Ultrawideband Cross-Polarization Converter Using Anisotropic Reflective MetasurfaceTauqir Ahmad0Arbab Abdur Rahim1Rana Muhammad Hasan Bilal2Adnan Noor3Husnul Maab4Muhammad Ashar Naveed5Abdullah Madni6Muhammad Mahmood Ali7Muhammad Ahsan Saeed8Faculty of Electrical Engineering, Ghulam Ishaq Khan Institute of Engineering Sciences and Technology, Topi 23640, PakistanFaculty of Electrical Engineering, Ghulam Ishaq Khan Institute of Engineering Sciences and Technology, Topi 23640, PakistanFaculty of Electrical Engineering, Ghulam Ishaq Khan Institute of Engineering Sciences and Technology, Topi 23640, PakistanFaculty of Electrical Engineering, Ghulam Ishaq Khan Institute of Engineering Sciences and Technology, Topi 23640, PakistanFaculty of Electrical Engineering, Ghulam Ishaq Khan Institute of Engineering Sciences and Technology, Topi 23640, PakistanDepartment of Electronic Engineering, The Islamia University of Bahawalpur, Bahawalpur 63100, PakistanDepartment of Electrical Engineering, Lahore University of Management Sciences (LUMS), Lahore 54792, PakistanCentre for Mathematical Modelling and Intelligent Systems for Health and Environment (MISHE), F91 YW50 Sligo, IrelandDivision of Electronics and Electrical Engineering, Dongguk University, Seoul 04620, KoreaBroadband metasurface-based devices are essential and indispensable in modern wireless communication systems. This paper presents an ultra−wideband and wide incident angle reflective cross−polarization converter metasurface. The unit cell of the proposed structure is a 45° rotated anisotropic meta−sheet developed by cutting the rhombus−shaped patch from the central part of the square patch. The unit cell’s top structure and ground blocking sheet are made of copper, whereas a dielectric substrate (FR−4) is used as an intermediate spacer between them. The unit cell thickness is minimal compared to the operating wavelength (<inline-formula><math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><semantics><mrow><mn>1</mn><mo>/</mo><mn>14</mn><msub><mi mathvariant="sans-serif">λ</mi><mo>∘</mo></msub></mrow></semantics></math></inline-formula>, where <inline-formula><math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><semantics><mrow><msub><mi mathvariant="sans-serif">λ</mi><mo>∘</mo></msub></mrow></semantics></math></inline-formula> is the wavelength of the starting frequency of 13 GHz of the operating band). The proposed structure efficiently converts linearly polarized waves into their orthogonal component, with a polarization conversion ratio of (<i>PCR</i> > 90%) over a broad frequency spectrum of 13 GHz to 26 GHz. The physical origin of polarization conversion is also depicted using surface current distribution plots. An ultra−wideband and highly efficient polarization conversion (above 90%) is achieved with the help of strong electromagnetic resonance coupling between the upper and lower layer of the metasurface. This kind of ultra−wideband polarization conversion metasurface can be employed in satellite communication, radar cross−section reduction, and navigation systems.https://www.mdpi.com/2079-9292/11/3/487polarization converterasymmetric geometryangular stabilityreflective meta−surface
spellingShingle Tauqir Ahmad
Arbab Abdur Rahim
Rana Muhammad Hasan Bilal
Adnan Noor
Husnul Maab
Muhammad Ashar Naveed
Abdullah Madni
Muhammad Mahmood Ali
Muhammad Ahsan Saeed
Ultrawideband Cross-Polarization Converter Using Anisotropic Reflective Metasurface
Electronics
polarization converter
asymmetric geometry
angular stability
reflective meta−surface
title Ultrawideband Cross-Polarization Converter Using Anisotropic Reflective Metasurface
title_full Ultrawideband Cross-Polarization Converter Using Anisotropic Reflective Metasurface
title_fullStr Ultrawideband Cross-Polarization Converter Using Anisotropic Reflective Metasurface
title_full_unstemmed Ultrawideband Cross-Polarization Converter Using Anisotropic Reflective Metasurface
title_short Ultrawideband Cross-Polarization Converter Using Anisotropic Reflective Metasurface
title_sort ultrawideband cross polarization converter using anisotropic reflective metasurface
topic polarization converter
asymmetric geometry
angular stability
reflective meta−surface
url https://www.mdpi.com/2079-9292/11/3/487
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