Dual-band beam steering THz antenna using active frequency selective surface based on graphene

A dual-band independently beam steering THz antenna is presented, which is composed of a broadband omnidirectional monopole source antenna surrounded by six hexagonal active frequency selective surface (AFSS) screens with switchable filtering response in two bands. By controlling the chemical potent...

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Bibliographic Details
Published in:EPJ applied metamaterials 2021, Vol.8, p.12
Main Authors: Yang, Yao-Jia, Wu, Bian, Zhao, Yu-Tong, Chi-Fan
Format: Article
Language:English
Subjects:
Antennas
Beam steering
beam steering antenna
Broadband
Chemical potential
Frequency ranges
frequency selective surface
Frequency selective surfaces
Graphene
Laboratories
Radiation
Silica
Silicon
thz antenna
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Summary:A dual-band independently beam steering THz antenna is presented, which is composed of a broadband omnidirectional monopole source antenna surrounded by six hexagonal active frequency selective surface (AFSS) screens with switchable filtering response in two bands. By controlling the chemical potential from 0 eV to 0.5 eV, the AFSS screen can achieve the conversion between high transmission (ON state) and almost total reflection (OFF state) at two frequency ranges independently. Therefore, the radiation beams of the THz antenna in two bands can be steered from 360° large angle scanning and omnidirectional radiation with flexible combinations.
ISSN:2272-2394
2272-2394
DOI:10.1051/epjam/2021004