Graphene as a high impedance surface for ultra-wideband electromagnetic waves

Journal Article · Thu Nov 14 00:00:00 EST 2013 · Journal of Applied Physics

DOI:https://doi.org/10.1063/1.4830018· OSTI ID:22257761

Aldrigo, Martino; Costanzo, Alessandra ^[1]; Dragoman, Mircea ^[2]; Dragoman, Daniela ^[3]

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1. Department of Electrical, Electronic, and Information Engineering “Guglielmo Marconi” – DEI, University of Bologna, Viale del Risorgimento, 2, 40132 Bologna (Italy)
2. National Institute for Research and Development in Microtechnology (IMT), P.O. Box 38-160, 023573 Bucharest (Romania)
3. Department of Physics, University of Bucharest, P.O. Box MG-11, 077125 Bucharest (Romania)

The metals are regularly used as reflectors of electromagnetic fields emitted by antennas ranging from microwaves up to THz. To enhance the reflection and thus the gain of the antenna, metallic high impedance surfaces (HIS) are used. HIS is a planar array of continuous metallic periodic cell surfaces able to suppress surface waves, which cause multipath interference and backward radiation in a narrow bandwidth near the cell resonance. Also, the image currents are reduced, and therefore the antenna can be placed near the HIS. We demonstrate that graphene is acting as a HIS surface in a very large bandwidth, from microwave to THz, suppressing the radiation leakages better than a metal.

• OSTI ID: 22257761
• Journal Information: Journal of Applied Physics, Vol. 114, Issue 18; Other Information: (c) 2013 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA); ISSN 0021-8979
• Country of Publication: United States
• Language: English

Related Subjects

71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
ANTENNAS
CURRENTS
ELECTRIC IMPEDANCE
ELECTROMAGNETIC FIELDS
GRAPHENE
IMAGES
INTERFERENCE
LEAKS
METALS
MICROWAVE RADIATION
REFLECTION
WAVE PROPAGATION