A Novel Low Axis Ratio Double-Circularly Polarized Microstrip Antenna | Zendy

Jin-Ku Liu | Zendy; Xilai Zhao | Zendy; Chen-Xin Zhang | Zendy; ZanYang Wang | Zendy

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A Novel Low Axis Ratio Double-Circularly Polarized Microstrip Antenna

Author(s) -

Jin-Ku Liu,

Xilai Zhao,

Chen-Xin Zhang,

ZanYang Wang

Publication year - 2022

Publication title -

international journal of antennas and propagation

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.282

H-Index - 37

eISSN - 1687-5877

pISSN - 1687-5869

DOI - 10.1155/2022/8947697

Subject(s) - optics , physics , microstrip antenna , turnstile antenna , polarization (electrochemistry) , axial ratio , bandwidth (computing) , radiation pattern , microstrip , patch antenna , amplitude , circular polarization , radiation , phase difference , antenna (radio) , coaxial antenna , telecommunications , engineering , chemistry

This article presents a dual circular polarization (CP) microstrip antenna, emitting electromagnetic waves above and below the substrate, which is fed by the double L-probe. Selecting the L-probe feed increases the bandwidth of the antenna, and different probes control the rotation of CP. The antenna could radiate two polarized waves of the same amplitude and vertical through two square radiation patches; meanwhile, adjusting the phase difference between both waves to 90° will produce a CP wave in the far-field. The simulation and measurement results show that the antenna is in 4.3–4.8 GHz band with S11<−10 dB, S22<−10 dB, and AR<3 dB. Furthermore, a lower axis ratio could be obtained in this work compared with similar antennas of the same type.

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