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A metasurface-based high gain circularly polarized patch antenna with wide global bandwidth

Author

Listed:
  • Deepak Ram
  • Amit Kumar Singh
  • Somak Bhattacharyya

Abstract

This paper introduces a novel metasurface (MS)-based circularly polarized (CP) microstrip patch antenna. Utilizing a square microstrip patch with plus- and diagonal-shaped slots on a 1.6 mm thick FR-4 substrate as the host antenna, the design incorporates a 4 × 4 square array MS on another 1.6 mm thick FR-4 substrate, separated by a 3.4 mm thick Teflon layer. The antenna offers a −10-dB impedance bandwidth from 5.45 to 7.55 GHz and an axial ratio (AR) bandwidth between 6.02 and 6.35 GHz, achieving a maximum realized gain of 6.3 dBic at 6.25 GHz, exhibiting right-handed circular polarization (RHCP). An equivalent circuit model is developed to validate impedance response, and the fabricated antenna closely matches simulated results. With a low profile of $ 0.42\lambda\, {\rm o} \times 0.42\lambda\, {\rm o} \times 0.033\lambda\, {\rm o} $ 0.42λo×0.42λo×0.033λo at 6.25 GHz, this CP antenna is suitable for applications like satellite communication for their uplinks and WLAN application.

Suggested Citation

  • Deepak Ram & Amit Kumar Singh & Somak Bhattacharyya, 2024. "A metasurface-based high gain circularly polarized patch antenna with wide global bandwidth," Journal of Electromagnetic Waves and Applications, Taylor & Francis Journals, vol. 38(9), pages 1041-1055, June.
    • Handle: RePEc:taf:tewaxx:v:38:y:2024:i:9:p:1041-1055
    DOI: 10.1080/09205071.2024.2354718
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