A Reconfigurable Substrate-Superstrate Graphene-Based Leaky-Wave THz Antenna - Université de Rennes Access content directly
Journal Articles IEEE Antennas and Wireless Propagation Letters Year : 2016

A Reconfigurable Substrate-Superstrate Graphene-Based Leaky-Wave THz Antenna

Abstract

A planar substrate-superstrate configuration loaded by a graphene sheet is proposed as a novel reconfigurable antenna for terahertz applications. The effects of the introduction of graphene on the dispersion and radiation properties of the fundamental leaky modes supported by the structure are analyzed in detail, with the aim of investigating the possibility of beam scanning at a fixed frequency by varying the graphene chemical potential via an electrostatic bias. After optimizing the graphene position inside the antenna substrate for achieving maximum directivity at broadside, large scanning ranges are obtained in which the normalized attenuation constants of the fundamental TE/TM leaky-mode pair exhibit small values and reduced variation, thus producing a scanning process with an essentially constant narrow beamwidth. In the same ranges, the phase constants of the TE/TM-mode pair are shown to be equalized, thus opening the possibility of designing fixed-frequency scanning antennas with conical beams and reconfigurable dual polarization. © 2002-2011 IEEE.
No file

Dates and versions

hal-01371962 , version 1 (26-09-2016)

Identifiers

Cite

W. Fuscaldo, P. Burghignoli, P. Baccarelli, A. Galli. A Reconfigurable Substrate-Superstrate Graphene-Based Leaky-Wave THz Antenna. IEEE Antennas and Wireless Propagation Letters, 2016, 15, pp.1545--1548. ⟨10.1109/LAWP.2016.2550198⟩. ⟨hal-01371962⟩
86 View
0 Download

Altmetric

Share

Gmail Facebook X LinkedIn More