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Sensors 2017, 17(8), 1911; https://doi.org/10.3390/s17081911

Vertical-Strip-Fed Broadband Circularly Polarized Dielectric Resonator Antenna

1
Division of Electronics and Electrical Engineering, Dongguk University, Seoul 100-715, Korea
2
School of Electronic and Electrical Engineering, Sungkyunkwan University, Suwon 440-746, Korea
*
Author to whom correspondence should be addressed.
Received: 22 July 2017 / Revised: 12 August 2017 / Accepted: 16 August 2017 / Published: 18 August 2017
(This article belongs to the Section Physical Sensors)
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Abstract

A vertical-strip-fed dielectric resonator antenna exhibiting broadband circular polarization characteristics is presented. A broad 3 dB axial ratio bandwidth (ARBW) is achieved by combining multiple orthogonal modes due to the use of a special-shaped dielectric resonator. The proposed antenna is fabricated to evaluate its actual performance capabilities. The antenna exhibits a measured 3 dB ARBW of 44.2% (3.35–5.25 GHz), lying within a −10 dB reflection bandwidth of 82.7% (2.44–5.88 GHz). The measured peak gain within 3 dB ARBW is found to be 5.66 dBic at 4.8 GHz. The measured results are in good agreement with the simulated results. View Full-Text
Keywords: broadband antenna; circular polarization; dielectric resonator antenna; vertical-strip feeding broadband antenna; circular polarization; dielectric resonator antenna; vertical-strip feeding
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This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited (CC BY 4.0).
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Altaf, A.; Jung, J.-W.; Yang, Y.; Lee, K.-Y.; Hwang, K.C. Vertical-Strip-Fed Broadband Circularly Polarized Dielectric Resonator Antenna. Sensors 2017, 17, 1911.

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