The concept and analysis of a terahertz (THz) frequency-reconfigurable antenna using graphene are presented. The antenna exploits dipole-like plasmonic resonances that can be frequency-tuned on large range via the electric field effect in a graphene stack. In addition to efficient dynamic control, the proposed approach allows high miniaturization and good direct matching with continuous wave THz sources. A qualitative model is used to explain the excellent impedance stability under reconfiguration. These initial results are very promising for future all-graphene THz transceivers and sensors.

Topics
Plasmonics, Electric-field effects, Terahertz radiation, Wave propagation, Photomixing, Telecommunication networks, Perturbation theory, Graphene, Lenses, Bioassays
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© 2012 American Institute of Physics.
2012
American Institute of Physics
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