Design of Spatially-Dispersive Beam-Steering Metasurfaces

In this work, we explore the design and applications of spatially-dispersive beam-steering metasurfaces. Such innovative devices consist of cascaded Huygens meta-atoms optimized to exhibit an engineered profile of their transmission phase vs. the incidence angle of the impinging wave. Differently from conventional beam-steering metasurfaces, the proposed devices exhibit a refraction effect that is strongly angle-dependent and may find application in several scenarios of future wireless systems.