As an illustrative example, we demonstrate the ability to use the sampled incident wave to detect its angle of arrival.
By modifying the tunable meta-atoms constituting the metasurface, we couple small portions of the incident wave to an array of sensing waveguides. To address this need, we propose a reconfigurable reflective metasurface with integrated sensing capabilities. Paramount to this operation-which has attracted much attention recently-is the assumption that the reflective surface has prior knowledge of the propagation environment, for example, the direction/location of the transmitter and the intended receiver(s). Reconfigurable reflective surfaces can alter the propagation environment to improve wireless communication and power transfer.
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