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Advances in Spacetime-Modulated Metasurfaces

Breaking the fundamental limitations of conventional time-invariant systems, spacetime-modulated metasurfaces have a transformative potential for modern electromagnetic technology. This paper reviews some of our recent research in this area, which includes the applications of spread-spectrum camouflaging, Direction-of-Arrival (DoA) estimation and wireless multiplexing or tunable refraction. Moreover, it discusses the challenges related to this emerging technology.