Wideband Flexible/Transparent Connected-Ground MIMO Antennas for Sub-6 GHz 5G and WLAN Applications

A flexible transparent wideband four-element MIMO antenna with a connected ground plane is proposed with numerical computation and experimental measurement studies. The optical transparency is obtained using flexible conductive oxide material AgHT-4 and Melinex substrate. The radiating elements are...

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Autores principales:	Arpan Desai, Merih Palandoken, Jayshri Kulkarni, Gangil Byun, Truong Khang Nguyen
Formato:	article
Lenguaje:	EN
Publicado:	IEEE 2021
Materias:	Flexible MIMO sub 6 GHz 5G transparent wideband WLAN Electrical engineering. Electronics. Nuclear engineering TK1-9971
Acceso en línea:	https://doaj.org/article/1282004800eb4c519783bab471188fe0
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spelling	oai:doaj.org-article:1282004800eb4c519783bab471188fe02021-11-09T00:02:34ZWideband Flexible/Transparent Connected-Ground MIMO Antennas for Sub-6 GHz 5G and WLAN Applications2169-353610.1109/ACCESS.2021.3123366https://doaj.org/article/1282004800eb4c519783bab471188fe02021-01-01T00:00:00Zhttps://ieeexplore.ieee.org/document/9590559/https://doaj.org/toc/2169-3536A flexible transparent wideband four-element MIMO antenna with a connected ground plane is proposed with numerical computation and experimental measurement studies. The optical transparency is obtained using flexible conductive oxide material AgHT-4 and Melinex substrate. The radiating elements are in the form of circular stub-loaded C-shaped resonators, which are positioned in a carefully structured flexible Melinex substrate with an interconnected partial ground plane structured in the form of an L-shaped resonator, attaining an overall antenna size of <inline-formula> <tex-math notation="LaTeX">$0.33\lambda \times 0.48\lambda $ </tex-math></inline-formula> at the lowest operating frequency. The proposed antenna spans over a −10 dB impedance bandwidth of 2.21–6 GHz (92.32%) with an isolation level greater than 15dB among all elements. The maximum gain is 0.53dBi with a minimum efficiency of 41%, respectively which is satisfactory considering flexible structure and sheet impedance of <inline-formula> <tex-math notation="LaTeX">$4\Omega $ </tex-math></inline-formula>/sq. MIMO antenna parameters in terms of the envelope correlation coefficient (ECC) and diversity gain (DG) are also extracted where all the values are satisfactory for MIMO applications. The bending analysis of the proposed transparent MIMO antenna along the X and Y axis has revealed good performance in terms of scattering parameters and radiation pattern along with MIMO diversity performance. All of these technical points make the flexible MIMO antenna suitable for smart devices using sub-6 GHz 5G and WLAN band in IoT applications where visual clutter and co-site location issues need to be mitigated with the integration ease of conformal placement on the curved component/device surfaces.Arpan DesaiMerih PalandokenJayshri KulkarniGangil ByunTruong Khang NguyenIEEEarticleFlexibleMIMOsub 6 GHz 5GtransparentwidebandWLANElectrical engineering. Electronics. Nuclear engineeringTK1-9971ENIEEE Access, Vol 9, Pp 147003-147015 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	Flexible MIMO sub 6 GHz 5G transparent wideband WLAN Electrical engineering. Electronics. Nuclear engineering TK1-9971
spellingShingle	Flexible MIMO sub 6 GHz 5G transparent wideband WLAN Electrical engineering. Electronics. Nuclear engineering TK1-9971 Arpan Desai Merih Palandoken Jayshri Kulkarni Gangil Byun Truong Khang Nguyen Wideband Flexible/Transparent Connected-Ground MIMO Antennas for Sub-6 GHz 5G and WLAN Applications
description	A flexible transparent wideband four-element MIMO antenna with a connected ground plane is proposed with numerical computation and experimental measurement studies. The optical transparency is obtained using flexible conductive oxide material AgHT-4 and Melinex substrate. The radiating elements are in the form of circular stub-loaded C-shaped resonators, which are positioned in a carefully structured flexible Melinex substrate with an interconnected partial ground plane structured in the form of an L-shaped resonator, attaining an overall antenna size of <inline-formula> <tex-math notation="LaTeX">$0.33\lambda \times 0.48\lambda $ </tex-math></inline-formula> at the lowest operating frequency. The proposed antenna spans over a −10 dB impedance bandwidth of 2.21–6 GHz (92.32%) with an isolation level greater than 15dB among all elements. The maximum gain is 0.53dBi with a minimum efficiency of 41%, respectively which is satisfactory considering flexible structure and sheet impedance of <inline-formula> <tex-math notation="LaTeX">$4\Omega $ </tex-math></inline-formula>/sq. MIMO antenna parameters in terms of the envelope correlation coefficient (ECC) and diversity gain (DG) are also extracted where all the values are satisfactory for MIMO applications. The bending analysis of the proposed transparent MIMO antenna along the X and Y axis has revealed good performance in terms of scattering parameters and radiation pattern along with MIMO diversity performance. All of these technical points make the flexible MIMO antenna suitable for smart devices using sub-6 GHz 5G and WLAN band in IoT applications where visual clutter and co-site location issues need to be mitigated with the integration ease of conformal placement on the curved component/device surfaces.
format	article
author	Arpan Desai Merih Palandoken Jayshri Kulkarni Gangil Byun Truong Khang Nguyen
author_facet	Arpan Desai Merih Palandoken Jayshri Kulkarni Gangil Byun Truong Khang Nguyen
author_sort	Arpan Desai
title	Wideband Flexible/Transparent Connected-Ground MIMO Antennas for Sub-6 GHz 5G and WLAN Applications
title_short	Wideband Flexible/Transparent Connected-Ground MIMO Antennas for Sub-6 GHz 5G and WLAN Applications
title_full	Wideband Flexible/Transparent Connected-Ground MIMO Antennas for Sub-6 GHz 5G and WLAN Applications
title_fullStr	Wideband Flexible/Transparent Connected-Ground MIMO Antennas for Sub-6 GHz 5G and WLAN Applications
title_full_unstemmed	Wideband Flexible/Transparent Connected-Ground MIMO Antennas for Sub-6 GHz 5G and WLAN Applications
title_sort	wideband flexible/transparent connected-ground mimo antennas for sub-6 ghz 5g and wlan applications
publisher	IEEE
publishDate	2021
url	https://doaj.org/article/1282004800eb4c519783bab471188fe0
work_keys_str_mv	AT arpandesai widebandflexibletransparentconnectedgroundmimoantennasforsub6ghz5gandwlanapplications AT merihpalandoken widebandflexibletransparentconnectedgroundmimoantennasforsub6ghz5gandwlanapplications AT jayshrikulkarni widebandflexibletransparentconnectedgroundmimoantennasforsub6ghz5gandwlanapplications AT gangilbyun widebandflexibletransparentconnectedgroundmimoantennasforsub6ghz5gandwlanapplications AT truongkhangnguyen widebandflexibletransparentconnectedgroundmimoantennasforsub6ghz5gandwlanapplications
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Wideband Flexible/Transparent Connected-Ground MIMO Antennas for Sub-6 GHz 5G and WLAN Applications

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