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A superstrate loaded aperture coupled dual-band circularly polarized dielectric resonator antenna for X-band communications

Published online by Cambridge University Press:  26 November 2020

Sounik Kiran Kumar Dash Open the ORCID record for Sounik Kiran Kumar Dash [Opens in a new window] ,
Qingsha S. Cheng Open the ORCID record for Qingsha S. Cheng [Opens in a new window]  and
Taimoor Khan Open the ORCID record for Taimoor Khan [Opens in a new window]
Sounik Kiran Kumar Dash
Affiliation:
Department of Electrical and Electronic Engineering, Southern University of Science and Technology, Shenzhen, China
Qingsha S. Cheng*
Affiliation:
Department of Electrical and Electronic Engineering, Southern University of Science and Technology, Shenzhen, China University Key Laboratory of Advanced Wireless Communications of Guangdong Province, Southern University of Science and Technology, Shenzhen, China
Taimoor Khan
Affiliation:
Departent of Electronics and Communication Engineering, National Institute of Technology Silchar, Assam, India
*
Author for correspondence: Qingsha S. Cheng, E-mail: [email protected]
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Abstract

A superstrate loaded cylindrical dielectric resonator antenna is developed and demonstrated for dual-band circular polarization. The proposed antenna employs a microstrip-fed rotated cross-shaped slot coupling technique for exciting the dielectric resonator (DR). The design is developed in a straight forward way. Firstly, the DR is coupled with a conventional plus-shaped slot and operates in linear polarization mode at 7.4 and 11.2 GHz. Secondly, the slot is rotated by 10° to enable out-of-phase excitation and ensure circular polarization at the above-mentioned frequencies. In the third step, a square dielectric superstrate is placed above the DR which creates multiple reflection and enhance the gain up to ~8 dBi in both the frequencies without affecting other performances. The development stages are discussed in detail. The proposed design is demonstrated through prototype fabrication and characterization. This antenna can be used for X-band satellite communications.

Keywords

Dielectric resonator antennacircular polarizationhigh gain antennasuperstratedual band
Type
Antenna Design, Modelling and Measurements
Information
International Journal of Microwave and Wireless Technologies , Volume 13 , Issue 8 , October 2021 , pp. 867 - 874
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Copyright
Copyright © The Author(s), 2020. Published by Cambridge University Press in association with the European Microwave Association

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