Martinez-de-Rioja, EduardoVallejo, JorgeArboleya, AnaVarela, Fernando, R.Fontá, Celia2024-10-282024-10-282024-09978-84-09-62953-4https://hdl.handle.net/10115/40793URSI 2024: XXXIX Simposio Nacional de la Unión Científica Internacional de Radio. Cuenca, 4 - 6 septiembre 2024In this contribution, two designs of dual-band reflectarray surfaces are proposed for coverage-enhancing applications in millimeter-wave 5G networks. The first design is based on a two-layer reflectarray panel with simultaneous operation at 28 and 39 GHz, which is able to generate two independent collimated beams in dual polarization (one beam at each frequency). The second design is based on a single-layer reflectarray that operates at 28 and 60 GHz. In this case, a beamforming technique has been applied to broaden the beams in the azimuth plane, in order to cover a wider angular range. The proposed reflectarrays can be used to enable wireless communications in millimeter-wave networks, providing coverage of blind zones in both indoor and outdoor scenarios.spainfo:eu-repo/semantics/conferenceObjectinfo:eu-repo/semantics/closedAccess