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PIER PIER B PIER C PIER M PIER Letters PIER Photonics
2022-07-14
A Novel Low Profile Circularly Polarized GNSS Antenna with Wide 3 dB Axial Ratio Beamwidth
By
Jingchun Zhai,

    Dr. Jingchun Zhai

    College of Electronic and Information Engineering

    Shandong University of Science and Technology

    China

    Homepage

Gengliang Chen,

    Dr. Gengliang Chen

    College of Electronic and Information Engineering

    Shandong University of Science and Technology

    China

    Homepage

Wen Wang,

    Dr. Wen Wang

    College of Electronic and Information Engineering

    Shandong University of Science and Technology

    China

    Homepage

Yiqing Liu,

    Dr. Yiqing Liu

    College of Electrical Engineering and Automation

    Shandong University of Science and Technology

    China

    Homepage

Luzhen Wang,

    Dr. Luzhen Wang

    China Unicom(Tsingtao), China Unicom

    China

    Homepage

Zhuopeng Wang

    Professor Zhuopeng Wang

    College of Information and Electrical Engineering

    Shandong University of Science and Technology

    China

    Homepage

Progress In Electromagnetics Research M, Vol. 111, 199-208, 2022
doi:10.2528/PIERM22051602 | Google Scholar

Abstract
A novel low-profile GNSS microstrip circular polarization antenna is proposed and analyzed. Circular polarization is realized by asymmetric structure patch, and arc structure loaded on the main radiator can keep two modes orthogonal over a wide-angle range, so that the antenna has an extremely wide 3 dB axial ratio beamwidth (ARBW). The far-field AR beamwidths obtained are 232° and 212° respectively in the main plane of φ=0° and φ=90°. In φ=45° and φ=135°, 3 dB AR beamwidths are 241° and 244°, far exceeding the 120° required for satellite applications. In the whole CP band, 78.95% of the beam width exceeds 180°. The profile is only 0.0156λ0, which is suitable, especially, for portable wireless systems or devices. The return loss bandwidth of -10 dB is 5.13% (1.52 GHz-1.6 GHz), which covers BeiDou Navigation System B1 (1.561 GHz). The axial ratio bandwidth is 1.28% (1.55 GHz-1.57 GHz), and the in-band peak gain is 4.09 dBi.
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Citation
Jingchun Zhai, Gengliang Chen, Wen Wang, Yiqing Liu, Luzhen Wang, and Zhuopeng Wang, "A Novel Low Profile Circularly Polarized GNSS Antenna with Wide 3 dB Axial Ratio Beamwidth," Progress In Electromagnetics Research M, Vol. 111, 199-208, 2022.
doi:10.2528/PIERM22051602
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