A broadband reconfigurable frequency-selective surface in terahertz band based on different metal-insulator transition temperature of VO₂

抄録

In this paper, a broadband reconfigurable frequency-selective surface (FSS) in terahertz band based on different metal-insulator transition (MIT) temperature of vanadium dioxide (VO₂) is proposed. By using different MIT temperature of VO₂, the broadband reconfigurable design of the FSS is realized. The results show that the center frequency of the FSS is 2.15THz and when the temperature is lower than 60°C, the relative bandwidth is 74.19%. When the temperature is between 60°C and 72°C, the relative bandwidth is 55.59%. Above 72°C, the relative bandwidth is 33.78%. The FSS has broad application prospects in other emerging terahertz fields such as terahertz regulation and communication.