Figure 1

Schematic illustration of (a) proposed polarization conversion MS under the illumination of linearly polarized waves and (b) 3D schematic of a unit cell. Polytef dielectric substrate and air substrate are utilized to form this double-layer structure. The relative permittivity of polytef dielectric substrate is 2.65 and dielectric loss is 0.002. The design patterns are printed on both sides of dielectric substrate. The detailed dimensions of unit cell are p = 10.0 mm, l1 = 4.4 mm, l2 = 2.8 mm, w = 1.6 mm, t1 = 3.0 mm, t2 = 3.0 mm, θ = 90°, β1 = 45°/135°, β2 = 135°/45°.