Reflectarray Antennas for 5-G Indoor Coverage

Abstract

A reflectarray antenna at 28 GHz is proposed to be used as a base station in 5-G indoor communications. The reflectarray is integrated in an office and the near-field radiated over a desktop surface is simulated. Since the near-field is not properly focused on the area defined for 5-G coverage, an optimization of the reflectarray is required. The generalized Intersection Approach algorithm is employed to optimize the radiated field at the plane of the desktop surface in order to improve the coverage area. Then, a comparison between the near-field before and after the optimization is carried out, showing a significant improvement of the coverage area. In addition, other planes are analyzed, allowing to extend the results from the optimized plane to others.