基于介质谐振器的太赫兹超材料滤波器  

Terahertz Metamaterial Filter Based on Dielectric Resonator

作　　者：张娜 孟子凡[2,3] ZHANG Na;MENG Zifan(School of Electronic Science&Applied Physics,Hefei University of Technology,Hefei 230009,CHN;National Engineering Laboratory of Special Display Technology,National Key Laboratory of Advanced Display Technology,Academy of Photoelectric Technology,Hefei University of Technology,Hefei 230009,CHN;School of Instrumentation and Opto-electronics Engineering,Hefei University of Technology,Hefei 230009,CHN)

机构地区：[1]合肥工业大学电子科学与应用物理学院,合肥230009 [2]合肥工业大学特种显示技术国家工程实验室现代显示技术省部共建国家重点实验室光电技术研究院,合肥230009 [3]合肥工业大学仪器科学与光电工程学院,合肥230009

出　　处：《光电子技术》2022年第1期41-46,52,共7页Optoelectronic Technology

摘　　要：提出一种基于介质谐振器的太赫兹超材料滤波器,其结构由高介电常数谐振器和聚二甲基硅氧烷(PDMS)基板组成,并用有限元法对其进行仿真分析。研究结果表明,该滤波器对极化不敏感。探究其滤波特性,采用控制变量法来研究结构参数对传输系数的影响;同时,通过控制液晶介电常数的变化,可以实现部分或全部频段的动态可调。此外,为了深入了解滤波器的传输机理,从有效介质理论和谐振器理论两个方面分析其谐振机理。A terahertz metamaterial filter based on dielectric resonator was proposed. Its structure consisted of a high dielectric constant resonator and a polydimethylsiloxane(PDMS)substrate,and its simulation analysis was carried out by finite element method. The results showed that the filter was insensitive to polarization. The filtering characteristics were explored and the influence of structure parameters on transmission coefficient was studied by using the control variable method. At the same time,part or all of the frequency band could be dynamically adjustable by controlling the change of the dielectric constant of the liquid crystal. In addition,in order to understand the transmission mechanism of the filter,the resonant mechanism was analyzed from two aspects:the effective medium theory and the resonator theory.

关 键 词：全介质 多频带 滤波器 动态可调 太赫兹 

分 类 号：TN823[电子电信—信息与通信工程]