Experiment of a Phase-Gradient Metasurface Reflector for Millimeter Wave and 5G Applications

In this work, we propose a phase-gradient metasurface reflector for millimeter wave (mmWave) and the fifth generation (5G) mobile network applications. The proposed metasurface is composed of periodically arranged metallic patches loaded with square rings, backed by a ground plane. Numerical simulations and experiments are conducted to validate the designed metasurface reflector, and results show that the RCS and beamwidth are considerably affected by the overall size of the reflector, and in situations when the receiver is in non-line-of-sight (NLOS) with the transmitter, the metasurface reflector can improve the received signal strength by more than 10 dB.