Reconfigurable Metasurfaces for Radar and Communications Systems

Recent research on holographic and diffractive metasurfaces shows enormous promise for developing cheaper and more compact systems. A metasurface aperture exploits the phase shift inherent in the guided reference wave and avoids using active elements such as phase-shifters associated with conventional phased arrays and electronically scanned antennas. The radiation pattern can thus be controlled by altering properties of each metasurface element coupled to the reference wave. In this paper, we discuss parameters to control the metasurface for a radar or communications payload. In both cases, the reconstruction of the received aperture field relies on using computational imaging techniques on arbitrary and spatially diverse field patterns.

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