Field Decorrelation and Isolation Improvement in an MIMO Antenna Using an All-Dielectric Device Based on Transformation Electromagnetics

This work presents a new technique for enhancing the performance of a multiple-input multiple-output (MIMO) antenna by improving its correlation coefficient <i>ρ</i>. A broadband dielectric structure is designed using the transformation electromagnetics (TE) concept to decorrelate the fi...

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Autores principales:	Usman Qureshi, Muhammad Umar Khan, Mohammad S. Sharawi, Shah Nawaz Burokur, Raj Mittra
Formato:	article
Lenguaje:	EN
Publicado:	MDPI AG 2021
Materias:	correlation coefficient multiple-input multiple-output (MIMO) antenna transformation electromagnetics 3D printing additive manufacturing Chemical technology TP1-1185
Acceso en línea:	https://doaj.org/article/2bde3ecba35048ae9ded2c251da17f2f
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spelling	oai:doaj.org-article:2bde3ecba35048ae9ded2c251da17f2f2021-11-25T18:57:35ZField Decorrelation and Isolation Improvement in an MIMO Antenna Using an All-Dielectric Device Based on Transformation Electromagnetics10.3390/s212275771424-8220https://doaj.org/article/2bde3ecba35048ae9ded2c251da17f2f2021-11-01T00:00:00Zhttps://www.mdpi.com/1424-8220/21/22/7577https://doaj.org/toc/1424-8220This work presents a new technique for enhancing the performance of a multiple-input multiple-output (MIMO) antenna by improving its correlation coefficient <i>ρ</i>. A broadband dielectric structure is designed using the transformation electromagnetics (TE) concept to decorrelate the fields of closely placed radiating elements of an MIMO antenna, thereby decreasing <i>ρ</i> and mutual coupling. The desired properties of the broadband dielectric wave tilting structure (DWTS) are determined by using quasi-conformal transformation electromagnetics (QCTE). Next, the permittivity profile of the DWTS is realized by employing air-hole technology, which is based on the effective medium theory, and the DWTS is fabricated using the additive manufacturing (3D printing) technique. The effectiveness of the proposed technique is verified by designing two-element patch-based MIMO antenna prototypes operating at 3 GHz, 5 GHz, and 7 GHz, respectively. The proposed technique helped to reduce the correlation coefficient <i>ρ</i> in the range of 37% to 99% in the respective operating bandwidth of each MIMO antenna, thereby, in each case, improving the isolation between antenna elements by better than 3 dB, which is an excellent performance.Usman QureshiMuhammad Umar KhanMohammad S. SharawiShah Nawaz BurokurRaj MittraMDPI AGarticlecorrelation coefficientmultiple-input multiple-output (MIMO) antennatransformation electromagnetics3D printingadditive manufacturingChemical technologyTP1-1185ENSensors, Vol 21, Iss 7577, p 7577 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	correlation coefficient multiple-input multiple-output (MIMO) antenna transformation electromagnetics 3D printing additive manufacturing Chemical technology TP1-1185
spellingShingle	correlation coefficient multiple-input multiple-output (MIMO) antenna transformation electromagnetics 3D printing additive manufacturing Chemical technology TP1-1185 Usman Qureshi Muhammad Umar Khan Mohammad S. Sharawi Shah Nawaz Burokur Raj Mittra Field Decorrelation and Isolation Improvement in an MIMO Antenna Using an All-Dielectric Device Based on Transformation Electromagnetics
description	This work presents a new technique for enhancing the performance of a multiple-input multiple-output (MIMO) antenna by improving its correlation coefficient <i>ρ</i>. A broadband dielectric structure is designed using the transformation electromagnetics (TE) concept to decorrelate the fields of closely placed radiating elements of an MIMO antenna, thereby decreasing <i>ρ</i> and mutual coupling. The desired properties of the broadband dielectric wave tilting structure (DWTS) are determined by using quasi-conformal transformation electromagnetics (QCTE). Next, the permittivity profile of the DWTS is realized by employing air-hole technology, which is based on the effective medium theory, and the DWTS is fabricated using the additive manufacturing (3D printing) technique. The effectiveness of the proposed technique is verified by designing two-element patch-based MIMO antenna prototypes operating at 3 GHz, 5 GHz, and 7 GHz, respectively. The proposed technique helped to reduce the correlation coefficient <i>ρ</i> in the range of 37% to 99% in the respective operating bandwidth of each MIMO antenna, thereby, in each case, improving the isolation between antenna elements by better than 3 dB, which is an excellent performance.
format	article
author	Usman Qureshi Muhammad Umar Khan Mohammad S. Sharawi Shah Nawaz Burokur Raj Mittra
author_facet	Usman Qureshi Muhammad Umar Khan Mohammad S. Sharawi Shah Nawaz Burokur Raj Mittra
author_sort	Usman Qureshi
title	Field Decorrelation and Isolation Improvement in an MIMO Antenna Using an All-Dielectric Device Based on Transformation Electromagnetics
title_short	Field Decorrelation and Isolation Improvement in an MIMO Antenna Using an All-Dielectric Device Based on Transformation Electromagnetics
title_full	Field Decorrelation and Isolation Improvement in an MIMO Antenna Using an All-Dielectric Device Based on Transformation Electromagnetics
title_fullStr	Field Decorrelation and Isolation Improvement in an MIMO Antenna Using an All-Dielectric Device Based on Transformation Electromagnetics
title_full_unstemmed	Field Decorrelation and Isolation Improvement in an MIMO Antenna Using an All-Dielectric Device Based on Transformation Electromagnetics
title_sort	field decorrelation and isolation improvement in an mimo antenna using an all-dielectric device based on transformation electromagnetics
publisher	MDPI AG
publishDate	2021
url	https://doaj.org/article/2bde3ecba35048ae9ded2c251da17f2f
work_keys_str_mv	AT usmanqureshi fielddecorrelationandisolationimprovementinanmimoantennausinganalldielectricdevicebasedontransformationelectromagnetics AT muhammadumarkhan fielddecorrelationandisolationimprovementinanmimoantennausinganalldielectricdevicebasedontransformationelectromagnetics AT mohammadssharawi fielddecorrelationandisolationimprovementinanmimoantennausinganalldielectricdevicebasedontransformationelectromagnetics AT shahnawazburokur fielddecorrelationandisolationimprovementinanmimoantennausinganalldielectricdevicebasedontransformationelectromagnetics AT rajmittra fielddecorrelationandisolationimprovementinanmimoantennausinganalldielectricdevicebasedontransformationelectromagnetics
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Field Decorrelation and Isolation Improvement in an MIMO Antenna Using an All-Dielectric Device Based on Transformation Electromagnetics

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