Compact Four-Port Circularly Polarized MIMO X-Band DRA

Ahmed A. Ibrahim; Hijab Zahra; Syed Muzahir Abbas; Mohamed I. Ahmed; Gaurav Varshney; Subhas Mukhopadhyay; Abdelhady Mahmoud

doi:10.3390/s22124461

Sensors (Jun 2022)

Compact Four-Port Circularly Polarized MIMO X-Band DRA

Ahmed A. Ibrahim,
Hijab Zahra,
Syed Muzahir Abbas,
Mohamed I. Ahmed,
Gaurav Varshney,
Subhas Mukhopadhyay,
Abdelhady Mahmoud

Affiliations

Ahmed A. Ibrahim: Electronics and Communications Engineering Department, Minia University, El-Minia 61519, Egypt
Hijab Zahra: School of Engineering, Faculty of Science and Engineering, Macquarie University, Sydney, NSW 2109, Australia
Syed Muzahir Abbas: School of Engineering, Faculty of Science and Engineering, Macquarie University, Sydney, NSW 2109, Australia
Mohamed I. Ahmed: Microstrip Department, Electronics Research Institute, El Nozha, Cairo 11843, Egypt
Gaurav Varshney: Department of Electronics and Communication Engineering, National Institute of Technology Patna, Patna 800005, India
Subhas Mukhopadhyay: School of Engineering, Faculty of Science and Engineering, Macquarie University, Sydney, NSW 2109, Australia
Abdelhady Mahmoud: Faculty of Engineering, Benha University, Benha 13511, Egypt

DOI: https://doi.org/10.3390/s22124461
Journal volume & issue: Vol. 22, no. 12
p. 4461

Abstract

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A circularly polarized (CP) multi-input multioutput (MIMO) dielectric resonator (DR) antenna (DRA) with compact size and four ports is implemented. CP radiation was achieved using the deformed DR geometry excited with aperture coupled feeding. A CPDRA with a single and two ports is investigated. The defected ground structure (DGS) was incorporated into the antenna for improving the isolation between the ports. The DGS was incorporated in such a way that the required phase difference between the generated orthogonal degenerate modes is preserved. This concept could be utilized in implementing a compact four-port CP antenna. The MIMO antenna provides a 10 dB impedance bandwidth of 38% (8.5–12.5 GHz) and a 3 dB AR bandwidth of 9.32% (9.2–10.1 GHz). The gain of the implemented antenna was around 6 dBi in the band where CP radiation was achieved. The MIMO performance parameters were calculated, and their values remained within the acceptable limits. The implemented antenna could suitably be used in X-band applications.

Published in Sensors

ISSN: 1424-8220 (Online)
Publisher: MDPI AG
Country of publisher: Switzerland
LCC subjects: Technology: Chemical technology
Website: http://www.mdpi.com/journal/sensors

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