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PIER PIER B PIER C PIER M PIER Letters PIER Photonics
2023-03-01
Single-Fed Wide-Beamwidth Circularly Polarized Antenna Using Reflector-Loaded Bent Dielectric Resonator
By
Tielin Zhang,

    Dr. Tielin Zhang

    School of Information Science and Technology

    Dalian Maritime University

    China

    Homepage

Hongmei Liu,

    Professor Hongmei Liu

    School of Information Science and Technology

    Dalian Maritime University

    China

    Homepage

Shao-Jun Fang,

    Prof. Shao-Jun Fang

    Information Engineering College

    Dalian Maritime University

    China

    Homepage

Zhongbao Wang

    Dr. Zhongbao Wang

    School of Information Science and Technology

    Dalian Maritime University

    China

    Homepage

Progress In Electromagnetics Research Letters, Vol. 109, 65-73, 2023
doi:10.2528/PIERL22112803 | Google Scholar

Abstract
In the paper, a compact single-fed wide-beamwidth circularly polarized (CP) antenna is proposed. The main radiator of the antenna is a bent dielectric resonator (DR), which is conformal to a rectangle substrate with the same curvature and is excited through a crossed-two-ring slotted ground fed by a T-shaped feeding line. By bending the DR to different curvatures, the half-power bandwidth (HPBW) of the dielectric resonator antenna (DRA) can be adjusted. Besides, to improve the 3-dB axial ratio (AR) beamwidth, as well as further enhance the HPBW, a copper reflector is inserted below the DRA. A prototype operating in BeiDou Navigation Satellite System (BDS) B1 band (1.561 GHz) was designed, and measurement was done to verify the simulations. Measurement results show that from 1.55 GHz to 1.58 GHz, the return loss is more than 10 dB and the AR is less than 3 dB. At 1.561 GHz, the measured 3-dB AR beamwidths are 165° and 210° at xoz and yoz planes, respectively, while the HPBWs are 143° and 154° at the two planes.
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Citation
Tielin Zhang, Hongmei Liu, Shao-Jun Fang, and Zhongbao Wang, "Single-Fed Wide-Beamwidth Circularly Polarized Antenna Using Reflector-Loaded Bent Dielectric Resonator," Progress In Electromagnetics Research Letters, Vol. 109, 65-73, 2023.
doi:10.2528/PIERL22112803
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