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Wideband Circularly Polarized Dielectric Resonator Antenna Array With Polarization Diversity

Gupta, Surbhi, Sharma, Anand, Das, Gourab, Gangwar, Ravi Kumar and Khalily, Mohsen (2019) Wideband Circularly Polarized Dielectric Resonator Antenna Array With Polarization Diversity IEEE Access, 7. pp. 49069-49076.

Wideband Circularly Polarized Dielectric Resonator Antenna Array with Polarization Diversity.pdf - Accepted version Manuscript

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In this paper, a design approach for aperture coupled modified cylindrical dielectric resonator antenna (cDRA) array is discussed. The proposed radiating element is dual cylindrical ceramic blocks placed with a small gap. The proposed aperture excites dual radiating mode pattern inside modified cDRA, i.e., HEM11δ and TE01δ . The arrangement of radiating elements, i.e., dual cylindrical ceramic blocks, provides lower Q -factor (wider impedance bandwidth). Conversion from a single radiating element to an array arrangement provides the gain enhancement of 3.0 dBi in the complete operating frequency range. The proposed aperture offers circularly rotating EM wave within frequency range 4.5–5.7 GHz. Antenna prototype is fabricated for the validation of simulated near as well as far-field parameters. Practically measured outcomes confirm that it is working in between the frequency range 4.7–6.4 GHz. The 3-dB axial ratio bandwidth of the proposed radiator is about 23.52% (4.5–5.7 GHz). Directional radiation pattern and circular polarization features make the proposed radiating structure more appropriate for WLAN (5.2 GHz) and local thermal equilibrium (LTE) band 46 (5.5 GHz) applications.

Item Type: Article
Divisions : Faculty of Engineering and Physical Sciences > Electronic Engineering
Authors :
Gupta, Surbhi
Sharma, Anand
Das, Gourab
Gangwar, Ravi Kumar
Date : 9 April 2019
DOI : 10.1109/ACCESS.2019.2909581
Copyright Disclaimer : © 2019 IEEE. Personal use of this material is permitted. Permission from IEEE must be obtained for all other uses, in any current or future media, including reprinting/republishing this material for advertising or promotional purposes, creating new collective works, for resale or redistribution to servers or lists, or reuse of any copyrighted component of this work in other works.
Uncontrolled Keywords : Antenna array; Dielectric resonator antenna; Circular polarized antenna; Wireless LAN; Apertures; Antenna measurements; Bandwidth; Ceramics; Microstrip antenna arrays; Dielectric resonator antennas
Depositing User : Clive Harris
Date Deposited : 29 Apr 2019 13:04
Last Modified : 29 Apr 2019 13:04

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