Open AccessPerformance enhancement of graphene plasmonic nanoantennas for THz communication
Author(s) -
Dash Sasmita,
Patnaik Amalendu,
Kaushik Brajesh Kumar
Publication year - 2019
Publication title -
iet microwaves, antennas and propagation
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.555
H-Index - 69
eISSN - 1751-8733
pISSN - 1751-8725
DOI - 10.1049/iet-map.2018.5320
Subject(s) - graphene , terahertz radiation , optoelectronics , plasmon , directivity , materials science , antenna (radio) , reflection coefficient , optics , physics , telecommunications , nanotechnology , computer science
The concept and analysis of a graphene plasmonic nanoantenna over a SiO 2 /Si substrate at terahertz (THz) band are presented. The performance enhancement of the antenna is proposed by dynamically controlling the surface conductivity of graphene using an electric field effect. The controlling ability of graphene via gate voltage enables frequency reconfiguration of the antenna over a wide range of 2.56–4.98 THz. The performance merits of the antenna are its high directivity, broadside radiation pattern, low reflection coefficient, stable impedance and high miniaturisation. The proposed graphene plasmonic antenna has potential to be used for THz communication.