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)

Distributions of the y -component of the reflection electric field at 14.5 GHz when the incident angle is (a) 10°, (b) 20°, and (c) 30°, respectively.