Electrically and Magnetically Biased Graphene-Based Cylindrical Waveguides: Analysis and Applications as Reconfigurable Antennas

Diego Correas-Serrano, Juan Sebastian Gomez Diaz, Andrea Alu, Alejandro Alvarez-Melcon

Research output: Contribution to journalArticle

49 Scopus citations

Abstract

The propagation of surface waves along electrically and magnetically biased graphene-based cylindrical waveguides (GCWs) is investigated in detail. Analytical dispersion equations are derived for several GCW geometries, considering the presence of an inner metallic core and multiple (coaxial-like) graphene layers. The proposed formulation reveals a fundamental connection between surface plasmons found in GCWs/carbon nanotubes and planar graphene structures. Numerical results confirm the higher confinement of modes supported by GCWs compared with their planar counterparts, while keeping a similar level of losses. The proposed structure is applied to develop plasmonic reconfigurable dipole antennas in the low THz band, which provide higher radiation efficiency than current graphene-based radiators, without requiring the presence of bulky lenses. We envision that the proposed GCWs may find application in reconfigurable THz transceivers, near-field application, wireless interconnects, and sensing systems.

Original languageEnglish (US)
Article number7270352
Pages (from-to)951-960
Number of pages10
JournalIEEE Transactions on Terahertz Science and Technology
Volume5
Issue number6
DOIs
StatePublished - Nov 1 2015
Externally publishedYes

Keywords

  • Graphene
  • plasmonics
  • reconfigurable antennas
  • terahertz (THz)

ASJC Scopus subject areas

  • Electrical and Electronic Engineering
  • Radiation

Fingerprint Dive into the research topics of 'Electrically and Magnetically Biased Graphene-Based Cylindrical Waveguides: Analysis and Applications as Reconfigurable Antennas'. Together they form a unique fingerprint.

  • Cite this