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Axial ratio bandwidth enhancement of a circularly polarized rectangular dielectric resonator antenna

Published online by Cambridge University Press:  05 July 2018

Gaurav Varshney ,
V. S. Pandey  and
R. S. Yaduvanshi
Gaurav Varshney*
Affiliation:
Department of Electronics and Communication Engineering, NIT Delhi, Delhi 110040, India
V. S. Pandey
Affiliation:
Department of Applied Sciences, NIT Delhi, Delhi 110040, India
R. S. Yaduvanshi
Affiliation:
Department of Electronics and Communication Engineering, AIACTR, Delhi 110031, India
*
Author for correspondence: Gaurav Varshney, E-mail: gauravnitd@outlook.com
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Abstract

This paper presents a new technique for the enhancement of axial ratio (AR) bandwidth of a circularly polarized dielectric resonator antenna with a single feeding. To enhance the AR bandwidth, adjacent 3-dB AR passbands are merged by inserting the notches and conductive coating in the dielectric resonator. The dimensions of the notches and conductive coating are selected in such manner that impedance bandwidth remains approximately unchanged. The antenna provides the measured AR and impedance bandwidths of 55.22% and 66.45%, respectively.

Keywords

Axial ratiocircular polarizationdielectric resonator antenna
Type
Research Papers
Information
International Journal of Microwave and Wireless Technologies , Volume 10 , Issue 8 , October 2018 , pp. 984 - 990
Copyright
Copyright © Cambridge University Press and the European Microwave Association 2018 

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