This paper presents a complete dispersion analysis of a tunable graphene-based Fabry-Perot cavity in the THz range. The structure consists of a grounded dielectric slab covered by a graphene partially-reflecting sheet whose surface conductivity can easily be tuned by applying an electrostatic bias. Complex TE and TM modes in bound regimes (surface waves including plasmon polaritons) as well as in radiative regimes (leaky waves) are taken into account. The analysis reveals a very interesting behavior of the fundamental leaky modes for practical values of the bias. In particular, we illustrate how a graphene-based FPC can attractively be used as a reconfigurable leaky-wave radiator operating in the THz range.
Fuscaldo, W., Burghignoli, P., Baccarelli, P., Galli, A. (2015). Complex Modes of a Tunable Graphene-Based Fabry-Perot Cavity THz Antenna. In Proc. 9th European Conference on Antennas and Propagation 2015. IEEE, 345 E 47TH ST, NEW YORK, NY 10017 USA.
Complex Modes of a Tunable Graphene-Based Fabry-Perot Cavity THz Antenna
BACCARELLI, PAOLO;
2015-01-01
Abstract
This paper presents a complete dispersion analysis of a tunable graphene-based Fabry-Perot cavity in the THz range. The structure consists of a grounded dielectric slab covered by a graphene partially-reflecting sheet whose surface conductivity can easily be tuned by applying an electrostatic bias. Complex TE and TM modes in bound regimes (surface waves including plasmon polaritons) as well as in radiative regimes (leaky waves) are taken into account. The analysis reveals a very interesting behavior of the fundamental leaky modes for practical values of the bias. In particular, we illustrate how a graphene-based FPC can attractively be used as a reconfigurable leaky-wave radiator operating in the THz range.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
