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Title: Smart antennas based on graphene

We report two configurations of smart graphene antennas, in which either the radiation pattern of the antenna or the backscattering of the periodic metallic arrays is controlled by DC biases that induce metal-insulator reversible transitions of graphene monolayers. Such a transition from a high surface resistance (no bias) to a low surface resistance state (finite bias voltage) causes the radiation pattern of metallic antennas backed with graphene to change dramatically, from omnidirectional to broadside. Moreover, reflectarrays enhance the backscattered field due to the same metal-dielectric transition.
Authors:
;  [1] ;  [2]
  1. National Institute for Research and Development in Microtechnology (IMT), P.O. Box 38-160, 023573 Bucharest (Romania)
  2. Physics Faculty, University of Bucharest, P.O. Box MG-11, 077125 Bucharest (Romania)
Publication Date:
OSTI Identifier:
22306011
Resource Type:
Journal Article
Resource Relation:
Journal Name: Journal of Applied Physics; Journal Volume: 116; Journal Issue: 11; Other Information: (c) 2014 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
77 NANOSCIENCE AND NANOTECHNOLOGY; ANTENNAS; BACKSCATTERING; CONFIGURATION; DIELECTRIC MATERIALS; ELECTRIC POTENTIAL; GRAPHENE; METALS; NANOSTRUCTURES; NANOTECHNOLOGY; PERIODICITY; SURFACES