Sinusoidally modulated graphene leaky-wave antenna for electronic beamscanning at THz

Marc Esquius-Morote, Juan Sebastian Gomez Diaz, Julien Perruisseau-Carrier

Research output: Contribution to journalArticle

151 Scopus citations

Abstract

This paper proposes the concept, analysis and design of a sinusoidally modulated graphene leaky-wave antenna with beam scanning capabilities at a fixed frequency. The antenna operates at terahertz frequencies and is composed of a graphene sheet transferred onto a back-metallized substrate and a set of polysilicon DC gating pads located beneath it. In order to create a leaky-mode, the graphene surface reactance is sinusoidally modulated via graphene's field effect by applying adequate DC bias voltages to the different gating pads. The pointing angle and leakage rate can be dynamically controlled by adjusting the applied voltages, providing versatile beamscanning capabilities. The proposed concept and achieved performance, computed using realistic material parameters, are extremely promising for beamscanning at THz frequencies, and could pave the way to graphene-based reconfigurable transceivers and sensors.

Original languageEnglish (US)
Article number6708495
Pages (from-to)116-122
Number of pages7
JournalIEEE Transactions on Terahertz Science and Technology
Volume4
Issue number1
DOIs
StatePublished - Jan 1 2014
Externally publishedYes

Keywords

  • beamscanning
  • Graphene
  • leaky-wave antennas
  • reconfigurability
  • sinusoidally modulated surfaces
  • terahertz (THz)

ASJC Scopus subject areas

  • Radiation
  • Electrical and Electronic Engineering

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