An Ultra-Wideband Linear-to-Circular Polarization Converter Based on a Circular, Pie-Shaped Reflective Metasurface
In this paper, we present an ultrawideband reflective metasurface with the properties of an LTC-PC, which is an orthotropic composition with two mutually orthogonal symmetric axes, <i>v</i> and <i>u</i>, and 45° rotation about the vertical <i>y</i>-axis. Based on...
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| Format: | Article |
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MDPI AG
2022-05-01
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| Series: | Electronics |
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| Online Access: | https://www.mdpi.com/2079-9292/11/11/1681 |
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| author | Abdul Majeed Jinling Zhang Muhammad Aqeel Ashraf Saifullah Memon Khalid Hussain Mohammadani Muhammad Ishfaq Mun Sun |
| author_facet | Abdul Majeed Jinling Zhang Muhammad Aqeel Ashraf Saifullah Memon Khalid Hussain Mohammadani Muhammad Ishfaq Mun Sun |
| author_sort | Abdul Majeed |
| collection | DOAJ |
| description | In this paper, we present an ultrawideband reflective metasurface with the properties of an LTC-PC, which is an orthotropic composition with two mutually orthogonal symmetric axes, <i>v</i> and <i>u</i>, and 45° rotation about the vertical <i>y</i>-axis. Based on the metasurface unit cell, it seems like a circular pie embedded with a rectangular patch. The converter can convert LP electromagnetic (EM) waves to CP waves over the bands from 20.18 GHz to 33.93 GHz, with a 3-dB AR bandwidth of up to 50.8% and a circular polarization wave that is RHCP (right hand CP). Moreover, the linear-to-circular PCR exceeds 98% in the frequency bands of 20–34 GHz. A comprehensive theoretical investigation was conducted to determine the fundamental cause of the LTC polarization conversion. The <inline-formula><math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><semantics><mrow><mo>∆</mo><msub><mi>φ</mi><mrow><mi>u</mi><mi>v</mi></mrow></msub></mrow></semantics></math></inline-formula> between two reflection coefficients at <i>v</i>- and <i>u</i>-polarized incidences is ±90°, which fully anticipates the axial ratio of the reflected wave. Any reflective metasurface can be used as an efficient LTC-PC if the <inline-formula><math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><semantics><mrow><mo>∆</mo><msub><mi>φ</mi><mrow><mi>u</mi><mi>v</mi></mrow></msub></mrow></semantics></math></inline-formula> is close to ±90°. |
| first_indexed | 2024-03-10T01:23:35Z |
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| id | doaj.art-127a36afca424bb2bac521dcc5a39d9b |
| institution | Directory Open Access Journal |
| issn | 2079-9292 |
| language | English |
| last_indexed | 2024-03-10T01:23:35Z |
| publishDate | 2022-05-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Electronics |
| spelling | doaj.art-127a36afca424bb2bac521dcc5a39d9b2023-11-23T13:54:08ZengMDPI AGElectronics2079-92922022-05-011111168110.3390/electronics11111681An Ultra-Wideband Linear-to-Circular Polarization Converter Based on a Circular, Pie-Shaped Reflective MetasurfaceAbdul Majeed0Jinling Zhang1Muhammad Aqeel Ashraf2Saifullah Memon3Khalid Hussain Mohammadani4Muhammad Ishfaq5Mun Sun6School of Electronic Engineering, Beijing University of Posts and Telecommunications, Beijing 100876, ChinaSchool of Electronic Engineering, Beijing University of Posts and Telecommunications, Beijing 100876, ChinaDepartment of Electronics, Quaid-e-Azam University, Islamabad 15320, PakistanState Key Laboratory of Networking and Switching Technology, Beijing University of Posts and Telecommunications, Beijing 100876, ChinaSchool of Electronic Engineering, Beijing University of Posts and Telecommunications, Beijing 100876, ChinaSchool of Electronic Engineering, Beijing University of Posts and Telecommunications, Beijing 100876, ChinaSchool of Electronic Engineering, Beijing University of Posts and Telecommunications, Beijing 100876, ChinaIn this paper, we present an ultrawideband reflective metasurface with the properties of an LTC-PC, which is an orthotropic composition with two mutually orthogonal symmetric axes, <i>v</i> and <i>u</i>, and 45° rotation about the vertical <i>y</i>-axis. Based on the metasurface unit cell, it seems like a circular pie embedded with a rectangular patch. The converter can convert LP electromagnetic (EM) waves to CP waves over the bands from 20.18 GHz to 33.93 GHz, with a 3-dB AR bandwidth of up to 50.8% and a circular polarization wave that is RHCP (right hand CP). Moreover, the linear-to-circular PCR exceeds 98% in the frequency bands of 20–34 GHz. A comprehensive theoretical investigation was conducted to determine the fundamental cause of the LTC polarization conversion. The <inline-formula><math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><semantics><mrow><mo>∆</mo><msub><mi>φ</mi><mrow><mi>u</mi><mi>v</mi></mrow></msub></mrow></semantics></math></inline-formula> between two reflection coefficients at <i>v</i>- and <i>u</i>-polarized incidences is ±90°, which fully anticipates the axial ratio of the reflected wave. Any reflective metasurface can be used as an efficient LTC-PC if the <inline-formula><math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><semantics><mrow><mo>∆</mo><msub><mi>φ</mi><mrow><mi>u</mi><mi>v</mi></mrow></msub></mrow></semantics></math></inline-formula> is close to ±90°.https://www.mdpi.com/2079-9292/11/11/1681ultra-widebandaxial ratio (AR)linear-to-circular polarization conversion (LTC-PC)RHCP (right-hand circular polarization)PERPCR |
| spellingShingle | Abdul Majeed Jinling Zhang Muhammad Aqeel Ashraf Saifullah Memon Khalid Hussain Mohammadani Muhammad Ishfaq Mun Sun An Ultra-Wideband Linear-to-Circular Polarization Converter Based on a Circular, Pie-Shaped Reflective Metasurface Electronics ultra-wideband axial ratio (AR) linear-to-circular polarization conversion (LTC-PC) RHCP (right-hand circular polarization) PER PCR |
| title | An Ultra-Wideband Linear-to-Circular Polarization Converter Based on a Circular, Pie-Shaped Reflective Metasurface |
| title_full | An Ultra-Wideband Linear-to-Circular Polarization Converter Based on a Circular, Pie-Shaped Reflective Metasurface |
| title_fullStr | An Ultra-Wideband Linear-to-Circular Polarization Converter Based on a Circular, Pie-Shaped Reflective Metasurface |
| title_full_unstemmed | An Ultra-Wideband Linear-to-Circular Polarization Converter Based on a Circular, Pie-Shaped Reflective Metasurface |
| title_short | An Ultra-Wideband Linear-to-Circular Polarization Converter Based on a Circular, Pie-Shaped Reflective Metasurface |
| title_sort | ultra wideband linear to circular polarization converter based on a circular pie shaped reflective metasurface |
| topic | ultra-wideband axial ratio (AR) linear-to-circular polarization conversion (LTC-PC) RHCP (right-hand circular polarization) PER PCR |
| url | https://www.mdpi.com/2079-9292/11/11/1681 |
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