A Compact Polarization Conversation Metasurface with Wide Working Band

This paper proposes a novel polarization conversation metasurface which has a sandwich structure coated by a dielectric superstrate. Two vias are inserted in each element. The working band of the metasurface ranges from 4.66 GHz to 22.61 GHz and the relative bandwidth is 131.6%. The size of the metasurface element is 0.12λ×0.12λ×0.1λ. The numerical results suggest that the proposed metasurface possesses ultra-wide working band and compact structure.