Dual Bands and Dual Polarization Reflectarray for Millimeter Wave Application by Supercell Structure

This paper presents dual bands and dual polarization re-flectarrays for 5G millimeter wave applications. The frequency bands of 28 GHz and 39 GHz are allocated for 5G to realize high speed data transmis-sion. However, these high frequency bands create coverage holes in which no link between base station and receivers is possible. Reflectarray has gained attention for reducing the size and number of coverage holes. This paper proposes a unit cell with swastika and the patch structure to construct the dual bands reflectrray operating at 28 GHz and 39 GHz by supercell. This paper also presents the detailed design procedure of the dual-bands reflectarray by supercell. The reflectarray is experimentally validated by a bistatic radar cross section measurement system. The experimental results are compared with simulation and reflection angle agreement is observed.