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<p>This paper investigates a reflective metasurface designed for wideband frequency operation. The metasurface features a two-symmetrical-stair structure and is simulated on a Rogers 5880 substrate with a thickness of 1.575&#xa0;mm. Simulation results demonstrate that the metasurface can convert x/y linearly polarized (LP) waves into y/x linearly polarized waves in the frequency ranges of 36.31–45&#xa0;GHz and 48.46–49.50&#xa0;GHz. Additionally, it can convert linear polarization into circular polarization (CP) within the frequency ranges of 15.60–32.97&#xa0;GHz, 44.56–45.80&#xa0;GHz, 46.86–47.80&#xa0;GHz, and 49.77–51.12&#xa0;GHz. The metasurface achieves cross-polarization conversion (CPC) with a fractional bandwidth of 23.49% and circular polarization conversion (CiPC) with a fractional bandwidth of 79.02%. Furthermore, the multifunctional metasurface exhibits angular stability up to 60°. These results are supported by theoretical equations and extensive analyses. The metasurface has also been fabricated, measured, and compared with the simulation results, showing good agreement. Due to its multifunctionality and broadband performance, this metasurface is suitable for various applications, including healthcare, satellite communication, radar systems, and 5G technologies.</p>

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Multifunctional reflective metasurface with wideband linear-to-circular and linear-to-linear polarization conversion

  • 期刊论文

  • 发表日期：

    2025年9月29日

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  • Abdulkadir Cildir

摘要

This paper investigates a reflective metasurface designed for wideband frequency operation. The metasurface features a two-symmetrical-stair structure and is simulated on a Rogers 5880 substrate with a thickness of 1.575 mm. Simulation results demonstrate that the metasurface can convert x/y linearly polarized (LP) waves into y/x linearly polarized waves in the frequency ranges of 36.31–45 GHz and 48.46–49.50 GHz. Additionally, it can convert linear polarization into circular polarization (CP) within the frequency ranges of 15.60–32.97 GHz, 44.56–45.80 GHz, 46.86–47.80 GHz, and 49.77–51.12 GHz. The metasurface achieves cross-polarization conversion (CPC) with a fractional bandwidth of 23.49% and circular polarization conversion (CiPC) with a fractional bandwidth of 79.02%. Furthermore, the multifunctional metasurface exhibits angular stability up to 60°. These results are supported by theoretical equations and extensive analyses. The metasurface has also been fabricated, measured, and compared with the simulation results, showing good agreement. Due to its multifunctionality and broadband performance, this metasurface is suitable for various applications, including healthcare, satellite communication, radar systems, and 5G technologies.