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A novel dual-loop ground-radiation antenna for circularly polarized GNSS applications

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  • Zeeshan Zahid
  • Longyue Qu

Abstract

In this investigation, a circularly polarized (CP) dual-loop ground-radiation antenna has been proposed for GPS applications using a transverse loop and a longitudinal loop. The transverse loop is designed within an 8 mm × 4.5 mm (0.042λ × 0.024λ) clearance, installed at the horizontal edge of the ground plane for excitation of the ground mode along the y-axis, whereas a 1 mm × 10 mm (0.005λ × 0.053λ) longitudinal loop is etched at the vertical edge of the ground plane for excitation of the ground mode along the x-axis. In this way, the magnitudes and phases of the orthogonal components of the radiated electric field have been controlled independently, satisfying the CP conditions. The proposed antenna produced right-hand circular polarization towards the + z-axis, which has been verified using rectangular and square-shaped ground planes. Both simulation and measurement were conducted, and the measured axial ratio bandwidth with reference to 3 dB was 20 MHz (1.27%) while the impedance bandwidth with reference to −6 dB was 141 MHz (8.95%).

Suggested Citation

  • Zeeshan Zahid & Longyue Qu, 2022. "A novel dual-loop ground-radiation antenna for circularly polarized GNSS applications," Journal of Electromagnetic Waves and Applications, Taylor & Francis Journals, vol. 36(13), pages 1838-1849, September.
    • Handle: RePEc:taf:tewaxx:v:36:y:2022:i:13:p:1838-1849
    DOI: 10.1080/09205071.2022.2044921
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