High-efficiency wideband flat focusing reflector mediated by metasurfaces

Yu Ji-Bao^a), Ma Hua†^a), Wang Jia-Fu^a), Li Yong-Feng^a), Feng Ming-De^a),^b), Qu Shao-Bo‡^a)

(a) Schematic of the metasurfaces unit cell; (b) cross-polarization reflection phase Φ and PCR vary with θ at 14.5 GHz; (c) and (d) PCR and reflection phase Φ of the cross-polarized waves vary with flare angles.