Multi-mode tunable terahertz metamaterial polarization converter based on graphene and vanadium dioxide

• Main Authors: ZHANG YING, TANG YUPEI, LI YOU, DONG TIANLI
• Format: Patent
• Language: Chinese; English
• Published: 17.10.2023
• Subjects: ANTENNAS, i.e. RADIO AERIALS; BASIC ELECTRIC ELEMENTS; ELECTRICITY

The invention discloses a multi-mode tunable terahertz metamaterial polarization converter based on graphene and vanadium dioxide, and belongs to the technical field of electromagnetic metamaterials. A device unit structure is composed of four layers, namely a graphene layer, a dielectric layer, a silicon dioxide layer and a metal circular ring layer which are sequentially attached to a bottom metal grating from bottom to top, the metal circular ring layer is a metal circular ring provided with two openings, the openings are symmetrically arranged in the 45-degree direction relative to the y axis, and the openings are filled with vanadium dioxide. According to the terahertz metamaterial polarization converter, the phase change characteristic of vanadium dioxide and the conduction characteristic of graphene are utilized, and through temperature regulation and voltage regulation, the multimode tunable terahertz metamaterial polarization converter is realized. The tuning mode, the relative bandwidth and the pola