MULTI-FREQUENCY RIS ARCHITECTURE

Abstract: a reflective device includes a control element and a reflective surface. the reflective surface includes a plurality of reflective elements, where each reflective element of the plurality of reflective elements has an antenna element and a phase shifter and is under control of the control element so as to reflect a radio-frequency (rf) signal incident on the reflective surface with an adjustable phase shift. an operating frequency of the reflective surface is configurable by at least a subset of the plurality of reflective elements being divided into a number of sub-elements that are individually switched via the control element from an activated state, in which a respective sub-element contributes to the reflection of the incident rf signal, to a deactivated state, in which the respective sub-element does not contribute to the reflection of the incident rf signal, and vice-versa.

Inventor(s): Antonio ALBANESE, Placido MURSIA, Vincenzo SCIANCALEPORE, Xavier COSTA-PEREZ

CPC Classification: H04B7/04013 (using two or more spaced independent antennas)

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