基于石墨烯超材料的可调谐太赫兹滤波器

Key Points

• The tunable filter’s center frequency can shift from 1.95 THz to 2.27 THz as the linewidth increases, enhancing performance.
• Increasing the structure's edge length lowers the resonance peak frequency from 2.38 THz to 2.16 THz, indicating a geometric influence on filtering.
• Introducing graphene allows for adjustable Fermi levels, enabling frequency shifts in the resonance peak from 2.08 THz to 2.19 THz, enhancing adaptability.
• This approach supports non-mechanical dynamic tuning, presenting a novel solution for terahertz band filtering and devices.