2020/09/14 by Behnaz Bakhtiari, Bakhtiari, Behnaz, Homayoon Oraizi +3
Engineering · Materials Science · #Advanced Antenna and Metasurface Technologies #Antenna Design and Analysis #Applied Physics (physics.app-ph) #FOS: Physical sciences #Metamaterials and Metasurfaces Applications
paper · pdf · doi:10.48550/arxiv.2009.06210
openalex publication_date 2020/09/14 · openalex created_date 2022/07/25 · openalex updated_date 2026/07/28
In this paper, a broadband tunable polarization converter based on graphene\nmetasurfaces is proposed. This polarization converter works in the terahertz\n(THz) frequency region, using the advantage of graphene characteristics to have\na tunable frequency response. The designed graphene-shaped periodic structure\non top of the substrate is utilized to convert the incident wave polarization\nto the desired target in a flexible operational band in the THz frequencies.\nThe polarization conversion ratio is more than 0.85 in a wide range of\nfrequencies in the THz band from 4.86 to 8.42 THz (the fractional bandwidth is\n54%). The proposed polarization converter is insensitive to the angle of the\nincident wave up to 40\deg. Using graphene provides a tunable frequency\nresponse without changing the geometry of the designed structure.\n