Highly Stable Ultra-Thin Wearable Metasurface with Broadband Cross-Polarization Conversion

A single-layered wearable broadband linear to cross-polarization converting metasurface is presented in this paper. The unit-cell structure of the metasurface consists of two triangular resonators along the diagonal connected by a narrow conducting strip on the to player of an ultra-thin (0.042λ
0
) wash cotton substrate (is the free-space wavelength at the lowest operating frequency. This arrangement forms a two-head arrow shaped structure generating two reflection modes at 13.32 GHz and 16.92 GHz. When a linearly polarized EM wave is incident on the y-axis, the reflected wave is obtained along it’s orthogonal x-axis. The fractional bandwidth of polarization conversion ratio (PCR ≥ 90%) is 37.19% centered at 15.38 GHz. The polarizer is angularly stable up to 45° of oblique incidence.