A transmissive temperature-controlled switchable band-stop terahertz modulator based on vanadium dioxide material
By designing a transmissive temperature-controlled switchable band-stop terahertz modulator based on vanadium dioxide material, and utilizing the double-layer structure and phase change characteristics of vanadium dioxide, flexible control of the broadband stopband and highly selective filtering are achieved, solving the problems of low frequency band selectivity and slow phase change speed in existing technologies. It is suitable for high-frequency applications and radar systems.
Patent Information
- Application Number
- CN202411935927.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-26
- Publication Date
- 2025-10-17
- Estimated Expiration
- 2044-12-26
AI Technical Summary
Existing vanadium dioxide-based terahertz filters have problems such as low frequency band selectivity, slow phase change speed, inability to quickly respond to changes in the external environment, and difficulty adapting to complex application scenarios that require dynamic frequency band adjustment.
A transmissive temperature-controlled switchable band-stop terahertz modulator based on vanadium dioxide material is designed. It adopts a double-layer structure, with the bottom layer being a polyimide substrate and the upper layer being a metal patch composed of metal and vanadium dioxide. The structure is arranged in a checkerboard pattern, and the phase change characteristics of vanadium dioxide are used to regulate the transmission and blocking performance of electromagnetic waves at different temperatures.
It achieves flexible regulation of broadband stopband, provides highly selective and fast-response filtering effects, and is suitable for high-frequency applications, especially for dynamically isolating interference signals in radar systems.