Design of Electromagnetic Skins Based on Multi-Faceted Reflectarrays for Millimeter-Wave Coverage Improvement

In this contribution, low-profile electromagnetic skins based on reflectarray multi-faceted topologies have been designed to improve wireless communications in different 5G/6G mm-wave scenarios. The proposed structures comprise multiple panels, assembled edge-to-edge following the curve profile of different architectural elements (cylindrical corners or vaults). Working in the 28 GHz band and dual-linear polarization, the multi-faceted approach deflects the impinging beam coming from a base station to a certain direction or coverage. The results of this work demonstrate that the multifaceted approach can efficiently generate the required coverage in each scenario but increasing the integrability with the architectural elements of the environment compared to a traditional single-facet electromagnetic skin.