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A low-profile wideband circularly polarized MIMO antenna with pattern and polarization diversity

Published online by Cambridge University Press:  14 October 2019

Prashant Chaudhary Open the ORCID record for Prashant Chaudhary [Opens in a new window] ,
Ashwani Kumar  and
B. K. Kanaujia Open the ORCID record for B. K. Kanaujia [Opens in a new window]
Prashant Chaudhary*
Affiliation:
Department of Electronic Science, University of Delhi South Campus, New Delhi110021, India
Ashwani Kumar
Affiliation:
Department of Electronics, Sri Aurobindo College, University of Delhi, New Delhi110017, India
B. K. Kanaujia
Affiliation:
School of Computational and Integrative Sciences, Jawaharlal Nehru University New Delhi, New Delhi110067, India
*
Author for correspondence: Prashant Chaudhary, E-mail: prashantelec129@gmail.com
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Abstract

The present work describes a unique planar low-profile wideband circularly polarized Multiple-Input and Multiple-Output (MIMO) antenna operating in the X-band, with pattern and polarization diversity over the entire axial-ratio bandwidth (ARBW). The design is unique in the sense that a simple grounded stub introduced between two linearly polarized monopole antennas has been used to realize wideband circular polarization, pattern diversity, and high isolation between antennas. The ARBW of the MIMO antenna is 2.45 GHz (8.11–10.56) 3 dB and its impedance matching bandwidth is 3.52 GHz (8.07–11.59). The isolation is better than 20 dB. The antenna can be easily adapted to operate other frequency bands by simple frequency scaling. It has been fabricated on an FR-4 substrate and its performance has been compared against several existing available antennas.

Keywords

MIMOpattern diversitypolarization diversitycircular polarization (CP)wideband
Type
Research Papers
Information
International Journal of Microwave and Wireless Technologies , Volume 12 , Issue 4 , May 2020 , pp. 316 - 322
Copyright
Copyright © Cambridge University Press and the European Microwave Association 2019

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