E3S Web of Conferences (Jan 2021)

Graphene-based Terahertz closed-stopband composite right/left-handed leaky-wave antennas

  • Gao Muzhi,
  • Zhu Gaoyang,
  • Kong Fanmin,
  • Li Kang

DOI
https://doi.org/10.1051/e3sconf/202126801081
Journal volume & issue
Vol. 268
p. 01081

Abstract

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A simple scheme for the realization of the terahertz (THz) fundamental-mode closed-stopband composite right/left-handed leaky-wave antennas (CRLH LWAs) is presented. The proposed CRLH LWAs are reconstructed by graphene-based coplanar waveguide (CPW) transmission line supercells. Their shunt inductances achieved by narrow graphene strips of two unit cell structures are halved. The CRLH LWAs are designed and confirmed by numerical simulations. They also exhibit frequency-scannable behaviors at THz with narrower bandwidth than that of the conventional graphene-based fundamental-mode CPW unit cell CRLH LWAs at THz without stopbands. Therefore, the proposed supercell CRLH LWAs could further improve the performance of the beam-steering antennas at THz.

Keywords