Sinusoidally Modulated Graphene Leaky-Wave Antenna for Electronic Beamscanning at THz

By M. Esquius-Morote, J. S. Gómez-Díaz, Julien Perruisseau-Carrier. IEEE Transactions on Terahertz Science and Technology, 2013

268 citations recorded by the source corpus.

This paper proposes the concept, analysis and design of a sinusoidally modulated graphene leaky-wave antenna with beam scanning capabilities at a fixed frequency. The antenna operates at terahertz frequencies and is composed of a graphene sheet transferred onto a back-metallized substrate and a set of polysilicon DC gating pads located beneath it. In order to create a leaky-mode, the graphene surface reactance is sinusoidally modulated via graphene's field effect by applying adequate DC bias voltages to the different gating pads. The pointing angle and leakage rate can be dynamically controlled by adjusting the applied voltages, providing versatile beamscanning capabilities. The proposed concept and achieved performance, computed using realistic material parameters, are extremely promising for beamscanning at THz frequencies, and could pave the way to graphene-based reconfigurable transceivers and sensors.

Subfields: Atomic and Molecular Physics, and Optics, Biomedical Engineering, Electrical and Electronic Engineering

View Paper: https://www.semanticscholar.org/paper/7b6eb3c12ac4232ae3afcb8295cac29e59acd4c3

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In Atomic and Molecular Physics, and Optics

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Citations in the corpus

Graphene-Based Plasmonic Tunable Low-Pass Filters in the Terahertz Band (2013, methodology): “Currently, graphene-based plasmonic components ranging from waveguides [7]–[10], antennas [11]–[14], reflectarrays [15], amplifiers [16], switches [17], modulators [18], or phaseshifters [19] to sensors [20], [21] have already been proposed and investigated.”
Metasurfaces and their applications (2018, background): “Figure 7E [115] depicts a sinusoidally modulated graphene leaky-wave antenna with electronic beam scanning.”
Design of a Reconfigurable MIMO System for THz Communications Based on Graphene Antennas (2014, background): “References [24] and [25] combine leaky-wave theory and the properties of graphene, and propose two different antenna structures with beam scanning capabilities.”
Terahertz Band Communication: An Old Problem Revisited and Research Directions for the Next Decade (2021, background): “Other less conventional ﬁxed directional radiating structures include leaky wave antennas, whose direction of radiation depends on the frequency of excitation, which opens the door to new ways of spatial and frequency multiplexing [78], [79].”