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Wideband low-RCS circularly polarized antenna with metasurface combining wave diffusion and polarization conversion

Author

Listed:
  • Qi Zheng
  • Chenjiang Guo
  • Jun Ding
  • Peng Fei
  • Peyman PourMohammadi
  • Guy A. E. Vandenbosch

Abstract

A novel and simple low-profile high-gain wideband circularly polarized (CP) slot antenna with low radar cross section (RCS) is presented. The proposed antenna is composed of a traditional linearly polarized (LP) slot antenna and an integrated metasurface-based superstrate. The superstrate consists of a center array with metasurface (MS) unit cells and four surrounding arrays with 4×4 MS unit cells. On the one hand, a wideband and high-gain CP radiation in the frequency band of 5.27-6.18 GHz (a relative bandwidth of 15.9%) is achieved by the polarization conversion property of the MS and four surrounding arrays. On the other hand, a broadband RCS reduction in the frequency band of 4.5-20 GHz (a relative bandwidth of 126.5%) is obtained by the combination of two electromagnetic wave diffusion principles. Inspired by C-band, X-band and Ku-band radar applications, a low-cost stealthy prototype with broadband low RCS and CP radiation is realized.

Suggested Citation

  • Qi Zheng & Chenjiang Guo & Jun Ding & Peng Fei & Peyman PourMohammadi & Guy A. E. Vandenbosch, 2023. "Wideband low-RCS circularly polarized antenna with metasurface combining wave diffusion and polarization conversion," Journal of Electromagnetic Waves and Applications, Taylor & Francis Journals, vol. 37(2), pages 207-218, January.
    • Handle: RePEc:taf:tewaxx:v:37:y:2023:i:2:p:207-218
    DOI: 10.1080/09205071.2022.2119435
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