Journal
PHYSICA E-LOW-DIMENSIONAL SYSTEMS & NANOSTRUCTURES
Volume 126, Issue -, Pages -Publisher
ELSEVIER
DOI: 10.1016/j.physe.2020.114479
Keywords
Graphene; EM simulation; Antenna; Silicon-based substrates; THz
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This paper investigated the performance of graphene THz antennas over silicon-based substrates and studied the impact of silicon-based substrates on graphene THz antennas. The proposed graphene THz antennas over silicon-based substrates show potential applications in THz short-range communication, sensing, and biomedical applications.
Owing to unique electromagnetic properties and support of surface plasmon polariton at terahertz frequency, graphene has gained momentum for the realization of the graphene plasmonic THz antenna. The appropriate selection of substrate for graphene THz antennas can provide an effective performance to the antenna. In this paper, we investigated the performance of graphene THz antennas over silicon-based substrates such as silicon, silicon dioxide, silicon nitride, and silicon carbide in order to study the impact of silicon-based substrates on graphene THz antennas. Antennas are analyzed in terms of the reflection coefficient, resonant frequency, impedance bandwidth, radiation pattern, half-power beamwidth, front to back ratio, and directivity. The proposed graphene THz antennas over silicon-based substrates will be promising for THz short-range communication, sensing, and biomedical application.
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