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A novel design of circularly polarized ring CDRA with wideband impedance bandwidth using slotted microstrip feed line for X-band applications

Published online by Cambridge University Press:  06 December 2021

Chandravilash Rai Open the ORCID record for Chandravilash Rai [Opens in a new window] ,
Sanjai Singh ,
Ashutosh Kumar Singh  and
Ramesh Kumar Verma
Chandravilash Rai*
Affiliation:
Department of Electronics & Communication Engineering, Indian Institute of Information Technology Allahabad, Allahabad, U.P., India
Sanjai Singh
Affiliation:
Department of Electronics & Communication Engineering, Indian Institute of Information Technology Allahabad, Allahabad, U.P., India
Ashutosh Kumar Singh
Affiliation:
Department of Electronics & Communication Engineering, Indian Institute of Information Technology Allahabad, Allahabad, U.P., India
Ramesh Kumar Verma
Affiliation:
Department of Electronics & Communication Engineering, Bundelkhand Institute of Engineering and Technology, Jhansi, U. P., India
*
Author for correspondence: Chandravilash Rai, E-mail: [email protected]
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Abstract

A circularly polarized ring cylindrical dielectric resonator antenna (ring-CDRA) of wideband impedance bandwidth is presented in this article. The proposed ring CDRA consist of an inverted rectangular (tilted rectangular) shaped aperture and inverted L-shaped slotted microstrip feed line. The tilted rectangular shaped aperture and inverted L-shaped microstrip feed line generate two-hybrid mode HEM11δ and HEM12δ while ring CDRA and slotted microstrip feed line are used for the enhancement of impedance bandwidth. The proposed ring CDRA is resonating between 6.08 and 12.2 GHz with 66.95% (6120 MHz) impedance bandwidth. The axial ratio (AR) bandwidth of 6.99% (780 MHz) is obtained between 10.76 and 11.54 GHz with a minimum AR value of 0.2 dB at a frequency of 11 GHz. The proposed geometry of ring CDRA has been validated with measurement performed by VNA and anechoic chamber. The operating range of the proposed radiator is useful for different applications in X-band.

Keywords

Circular polarizationinverted L-shapedring-CDRAslotted microstrip feed linetilted rectangular aperture
Type
Antenna Design, Modelling and Measurements
Information
International Journal of Microwave and Wireless Technologies , Volume 14 , Issue 9 , November 2022 , pp. 1149 - 1158
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Copyright
Copyright © The Author(s), 2021. Published by Cambridge University Press in association with the European Microwave Association

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