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Cuboidal quad-port UWB-MIMO antenna with WLAN rejection using spiral EBG structures

Published online by Cambridge University Press:  20 May 2021

Sumon Modak  and
Taimoor Khan Open the ORCID record for Taimoor Khan [Opens in a new window]
Sumon Modak
Affiliation:
Department of Electronics and Communication Engineering, National Institute of Technology Silchar, Silchar, Assam, India
Taimoor Khan*
Affiliation:
Department of Electronics and Communication Engineering, National Institute of Technology Silchar, Silchar, Assam, India
*
Author for correspondence: Taimoor Khan, E-mail: [email protected]
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Abstract

This study presents a novel configuration of a cuboidal quad-port ultra-wideband multiple-input and multiple-output antenna with WLAN rejection characteristics. The designed antenna consists of four F-shaped elements backed by a partial ground plane. A 50 Ω microstrip line is used to feed the proposed structure. The geometry of the suggested antenna exhibits an overall size of 23 × 23 × 19 mm3, and the antenna produces an operational bandwidth of 7.6 GHz (3.1–10.7 GHz). The notched band characteristic at 5.4 GHz is accomplished by loading a pair of spiral electromagnetic bandgap structures over the ground plane. Besides this, other diversity features such as envelope correlation coefficient, and diversity gain are also evaluated. Furthermore, the proposed antenna system provides an isolation of −15 dB without using any decoupling structure. Therefore, to validate the reported design, a prototype is fabricated and characterized. The overall simulated performance is observed in very close agreement with it's measured counterpart.

Keywords

3D antennacuboidal designultra-widebandisolationdiversityMIMOWLANEBG
Type
Antenna Design, Modeling and Measurements
Information
International Journal of Microwave and Wireless Technologies , Volume 14 , Issue 5 , June 2022 , pp. 626 - 633
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Copyright
Copyright © The Author(s), 2021. Published by Cambridge University Press in association with the European Microwave Association

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