Dual-band beam steering THz antenna using active frequency selective surface based on graphene
National Key Laboratory of Antennas and Microwave Technology, Key Laboratory of Millimeter Wave and Terahertz Technology, Xi'an 710071, PR China
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Accepted: 14 March 2021
Published online: 20 April 2021
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.
Key words: Graphene / frequency selective surface / beam steering antenna / THz antenna
© Y.-J. Yang et al., Published by EDP Sciences, 2021
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