Recent research efforts on reconfigurable intelligent surfaces (RISs) facilitate the
combination between the signal processing algorithms in wireless communications and the …

Reconfigurable intelligent surface (RIS) is a promising technology to reconfigure the
wireless channel, which can be used for signal modulation with low hardware cost. In this …

A directly modulating antenna using metasurfaces is optimized using the surrogate model
assisted differential evolution for antenna synthesis (SADEA) method and simulated …