A 2D Reflective Metasurface Augmented Luneburg Lens Antenna for 5G Communications

In this paper, we show a new two-dimensional reflective metasurface augmented Luneburg lens antenna to operate at the Ka frequency band for 5G wireless communication systems. It consists of a half-circle 2D Luneburg lens and a 40-element microstrip patch reflective metasurface. The simulation results of the metasurface augmented Luneburg lens antenna illustrate its capability for beam-steering towards chosen directions by changing the distribution of the microstrip patches on the surface of the reflective metasurface which makes it a suitable application for beam-steering that may operate within the 5G communication frequency bands at 28 GHz.