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A low-profile triple-band circularly polarized wide slot antenna for wireless systems

Published online by Cambridge University Press:  08 August 2018

Shilpee Patil*
Affiliation:
Department of Electronics & Communication Engineering, Ambedkar Institute of Advanced Communication Technologies & Research, Delhi-110031, India
A. K. Singh
Affiliation:
Department of Electronics & Instrumentation Engineering, Faculty of Engineering and Technology, M.J.P. Rohilkhand University, Bareilly-243006, UP, India
Binod K. Kanaujia
Affiliation:
School of Computation and Integrative Sciences, JNU, New Delhi-110067, India
R. L. Yadava
Affiliation:
Department of Electronics & Communication Engineering, Galgotias College of Engineering & Technology, Greater Noida, UP, India
*
Author for correspondence: Shilpee Patil, E-mail: [email protected]

Abstract

A simple design for triple-band circularly polarized (CP) wide slot antennas is proposed and experimentally investigated. The proposed antenna having a microstrip-fed rectangular patch with T-shaped notch for triple-band operation and a modified wide square slot on ground plane for CP operation. The measured 10 dB reflection bandwidths are 1.24% (≈340 MHz from 2.56 to 2.9 GHz), 9.63% (≈430 MHz from 4.25 to 4.68 GHz), and 5.34% (≈490 MHz from 8.93 to 9.42 GHz). The generated 3 dB axial ratio bandwidths of the proposed antenna are 7.54, 8.98, and 1.65% at operating frequencies around 2.65, 4.45, and 9.09 GHz, respectively. The measured peak gains within the 3 dB axial ratio bands are 3.03, 3.5, and 5.64 dBi. The simulated and measured results for the return loss, axial ratio, and antenna gain show a good agreement, which validate the antenna design.

Type
Research Papers
Copyright
Copyright © Cambridge University Press and the European Microwave Association 2018 

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