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) Fabricated sample and schematics of the 1D reflector. (b) Cross-polarization reflection phase Φ and the flare angle θ vary with positions on the metasurface at 14.5 GHz.