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

Author:

Chaudhary PrashantORCID,Kumar Ashwani,Kanaujia B. K.ORCID

Abstract

AbstractThe 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.

Publisher

Cambridge University Press (CUP)

Subject

Electrical and Electronic Engineering

Reference19 articles.

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