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research article

Predicting Input Impedance and Efficiency of Graphene Reconfigurable Dipoles Using a Simple Circuit Model

Tamagnone, Michele  
•
Perruisseau-Carrier, Julien  
2014
Ieee Antennas And Wireless Propagation Letters

An analytical circuit model able to predict the input impedance of reconfigurable graphene plasmonic dipoles is presented. A suitable definition of plasmonic characteristic impedance, employing natural currents, is used to for consistent modeling of the antenna-load connection in the circuit. In its purely analytical form, the model shows good agreement with full-wave simulations and explains the remarkable tuning properties of graphene antennas. Furthermore, using a single full-wave simulation and scaling laws, additional parasitic elements can be determined for a vast parametric space, leading to very accurate modeling. Finally, we also show that the modeling approach allows fair estimation of radiation efficiency as well. The approach also applies to thin plasmonic antennas realized using noble metals or semiconductors.

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Type
research article
DOI
10.1109/Lawp.2014.2305400
Web of Science ID

WOS:000332179400006

Author(s)
Tamagnone, Michele  
•
Perruisseau-Carrier, Julien  
Date Issued

2014

Publisher

Institute of Electrical and Electronics Engineers

Published in
Ieee Antennas And Wireless Propagation Letters
Volume

13

Start page

313

End page

316

Subjects

Graphene

•

infrared

•

reconfigurable antenna

•

sensing

•

terahertz

Peer reviewed

REVIEWED

Written at

EPFL

EPFL units
MNWAVE  
Available on Infoscience
April 14, 2014
Use this identifier to reference this record
https://infoscience.epfl.ch/handle/20.500.14299/102848
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