Reconfigurable metasurface with tunable antennas formed from arrays of pixels of an optically tunable material

An apparatus includes two or more tunable antennas providing a reconfigurable metasurface, each of the tunable antennas including a plurality of pixels of optically tunable material, and a control circuit including switches providing current sources and a ground voltage, the switches being coupled t...

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Bibliographische Detailangaben
Hauptverfasser:	Lai, Kafai, Falk, Abram L, Rosenberg, Jessie Carrigan, Farmer, Damon Brooks
Format:	Patent
Sprache:	eng
Schlagworte:	ANTENNAS, i.e. RADIO AERIALS BASIC ELECTRIC ELEMENTS DEVICES OR ARRANGEMENTS, THE OPTICAL OPERATION OF WHICH ISMODIFIED BY CHANGING THE OPTICAL PROPERTIES OF THE MEDIUM OF THEDEVICES OR ARRANGEMENTS FOR THE CONTROL OF THE INTENSITY,COLOUR, PHASE, POLARISATION OR DIRECTION OF LIGHT, e.g.SWITCHING, GATING, MODULATING OR DEMODULATING ELECTRICITY FREQUENCY-CHANGING NON-LINEAR OPTICS OPTICAL ANALOGUE/DIGITAL CONVERTERS OPTICAL LOGIC ELEMENTS OPTICS PHYSICS TECHNIQUES OR PROCEDURES FOR THE OPERATION THEREOF
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Beschreibung
Zusammenfassung:	An apparatus includes two or more tunable antennas providing a reconfigurable metasurface, each of the tunable antennas including a plurality of pixels of optically tunable material, and a control circuit including switches providing current sources and a ground voltage, the switches being coupled to respective ones of the pixels of optically tunable material in each of the tunable antennas via first electrodes, the ground voltage being coupled to respective ones of the pixels of optically tunable material in each of the tunable antennas via second electrodes. The control circuit is configured to modify states of respective ones of the plurality of pixels of optically tunable material in the tunable antennas utilizing current supplied between the first electrodes and the second electrodes to adjust reflectivity of the plurality of pixels of optically tunable material in each of the tunable antennas to dynamically reconfigure respective antenna shape configurations of the tunable antennas.