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Radiation Characteristics of Tunable Graphennas in the Terahertz Band
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2012 (English)In: Radioengineering, ISSN 1210-2512, Vol. 21, no 4Article in journal (Refereed) Published
Abstract [en]

Graphene-enabled wireless communications constitute a novel paradigm which has been proposed to implement wireless communications among nanosystems. Indeed, graphene-based plasmonic nano-antennas, or graphennas, just a few micrometers in size have been predicted to radiate electromagnetic waves at the terahertz band. In this work, the important role of the graphene conductivity in the characteristics of graphennas is analyzed, and their radiation performance both in transmission and reception is numerically studied. The resonance frequency of graphennas is calculated as a function of their length and width, both analytically and by simulation. Moreover, the influence of a dielectric substrate with a variable size, and the position of the patch with respect to the substrate is also evaluated. Further, important properties of graphene, such as its chemical potential or its relaxation time, are found to have a profound impact in the radiation properties of graphennas. Finally, the radiation pattern of a graphenna is compared to that of an equivalent metallic antenna. These results will prove useful for designers of future graphennas, which are expected to enable wireless communications among nanosystems.

Place, publisher, year, edition, pages
2012. Vol. 21, no 4
Keyword [en]
Graphene, graphene-based plasmonic nano-antenna, graphenna, resonant frequency, Surface Plasmon Polariton, terahertz
National Category
Electrical Engineering, Electronic Engineering, Information Engineering
URN: urn:nbn:se:kth:diva-118016ISI: 000313160800002ScopusID: 2-s2.0-84876960716OAI: diva2:604432
EU, European Research Council, 307311

QC 20130211

Available from: 2013-02-11 Created: 2013-02-08 Last updated: 2013-02-11Bibliographically approved

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Lemme, Max C.
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