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2021-12-01
Single-Feed Cylindrical Dielectric Resonator Antenna with Wide Angular Circular Polarization
By
Progress In Electromagnetics Research M, Vol. 106, 47-57, 2021
Abstract
In this paper, a single-feed cylindrical dielectric resonator antenna (DRA) with wide angular circular polarization is proposed. It is composed of a cylindrical cavity loaded cylindrical dielectric resonator (DR), an orthogonal slot with curved arms, and an off-centered L-shaped microstrip line. By inserting the slot with curved arms and a cylindrical cavity, the 3-dB axial ratio beamwidth (ARBW) can be increased, and symmetric radiation can be obtained. For validation, a prototype is designed at 1.7 GHz and fabricated. The overall size is 0.39λ0 × 0.39λ0 × 0.13λ0. The measured results show that it exhibits a 10-dB impedance bandwidth of 33.3% (1.45~2.03 GHz) with a circularly polarized (CP) bandwidth of 16.1% (1.54~1.81 GHz). Symmetric radiations are obtained, and the 3-dB ARBWs in the xoz and yoz planes are more than 150° over the CP bandwidth.
Citation
Hongmei Liu Tuanyuan Yan Shao-Jun Fang Zhongbao Wang , "Single-Feed Cylindrical Dielectric Resonator Antenna with Wide Angular Circular Polarization," Progress In Electromagnetics Research M, Vol. 106, 47-57, 2021.
doi:10.2528/PIERM21092001
http://www.jpier.org/PIERM/pier.php?paper=21092001
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