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Quad-band hybrid DRA loaded MIMO antenna with DGS for isolation enhancement

Published online by Cambridge University Press:  12 April 2021

G. Divya Open the ORCID record for G. Divya [Opens in a new window] ,
K. Jagadeesh Babu  and
R. Madhu
G. Divya*
Affiliation:
Jawaharlal Nehru Technological University, Kakinada, Andhra Pradesh, India
K. Jagadeesh Babu
Affiliation:
St. Ann's College of Engineering & Technology, Chirala, Andhra Pradesh, India
R. Madhu
Affiliation:
Jawaharlal Nehru Technological University, Kakinada, Andhra Pradesh, India
*
Author for correspondence: G. Divya, E-mail: [email protected]
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Abstract

This article introduces a cylindrical dielectric resonator antenna (CDRA) fed with a rhombic ring-shaped tapered feed for Multiple-Input-Multiple-Output (MIMO) applications. The proposed hybrid MIMO CDRA resonates at four frequency bands 2.5, 5.09, 6.8, and 9.0 GHz with isolation levels of 22, 34.22, 30.55, and 18.55 dB. Isolation enhancements are achieved by introducing “L” shaped slots on the partial ground plane. Parametric analysis is performed to validate the optimized dimensions of the tapered feed without and with DRA and defected ground structure. Diversity performance is examined by using envelope correlation coefficient and diversity gain. The proposed antenna operates in the S, C, and X-bands and is suitable for RF communication mobile broadband services, Wi-Fi, radar, and satellite applications. Good agreement is observed between simulated and measured results.

Keywords

DGShybrid antennaisolationrhombic ringtapered feed
Type
Antenna Design, Modeling and Measurements
Information
International Journal of Microwave and Wireless Technologies , Volume 14 , Issue 2 , March 2022 , pp. 247 - 256
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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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