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A novel ultra-wideband reflective cross-polarization converter based on anisotropic metasurface

Author

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  • M. M. Couto
  • M. W. B. Silva
  • A. L. P. S. Campos

Abstract

An ultra-thin and ultra-wideband anisotropic metasurface, acting as a linear polarization converter through reflection is designed and simulated in this research. The operation frequency range covers almost completely the Ku-band and the entire K- and Ka-band. The unit cell of the proposed metasurface is composed of a arrangement of concentric square metallic loops on a grounded dielectric substrate, in which a diagonal split is made, providing properties of an anisotropic material. Simulation results show that an efficient cross-polarization conversion, both for normal as well as for oblique incidence, is achieved with $ -10 $ −10 dB fractional bandwidth of 98.7% from 13.8 GHz to 40.7 GHz and with an average polarization conversion ratio of 97.5%. The ultra-wideband of the proposed structure results from multiple plasmonic resonances occurring at three neighboring frequencies (15.2 GHz, 25.9 GHz, and 38 GHz) resulting in a significant expansion of the operating frequency range.

Suggested Citation

  • M. M. Couto & M. W. B. Silva & A. L. P. S. Campos, 2021. "A novel ultra-wideband reflective cross-polarization converter based on anisotropic metasurface," Journal of Electromagnetic Waves and Applications, Taylor & Francis Journals, vol. 35(12), pages 1652-1662, August.
    • Handle: RePEc:taf:tewaxx:v:35:y:2021:i:12:p:1652-1662
    DOI: 10.1080/09205071.2021.1914742
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