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In this article, a single-layer metasurface based reflector design is proposed for linear-to-linear cross-polarization conversion in microwave frequency range. The unit-cell of the proposed design consists of triple-arrow resonant design printed on a grounded FR4 substrate. Excellent cross-conversion is achieved over a broad frequency range (8.0–18.50 GHz) with polarization conversion efficiency higher than 90%. The proposed design has a large fractional bandwidth (FBW) of 80% due to three resonances occurring in the band. The polarization response is angularly stable with respect to oblique incidences with incidence angles up to 45°. The proposed design has been fabricated and experimentally validated. The measurement results are in good agreement with the simulation results.

In this research, a highly efficient single-layer reflective polarization converter based on anisotropic metasurface is proposed for microwave communications. The periodic design works in a dual-operation mode as a halfwave plate (cross-polarizer) and a quarter-wave plate (circular-polarizer) over multiple frequency bands. The unit-cell is comprised of coupled D-shaped resonators printed on a low-cost FR-4 substrate offering crosspolarization conversion (above −3 dB) over three frequency bands (6. 45-6.87, 9.94-11.34, and 15.99-18.60 GHz) with cross conversion efficiency higher than 90%. Moreover, the proposed metasurface can also work as a linear to circular polarizer over three bands . The design is further shown to be angularly stable for incidence angles up to 30 . The proposed design has been validated experimentally after fabrication.

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