基于谐振环的太赫兹吸波体等效电路研究  

Study on equivalent circuit model of terahertz absorber based on split ring resonator(SRR)

作　　者：周龙[1] 张文涛[1] 胡放荣[1] 熊显名[1] 

机构地区：[1]桂林电子科技大学电子工程与自动化学院,广西桂林541004

出　　处：《激光与红外》2014年第6期664-667,共4页Laser & Infrared

基　　金：国家自然科学基金项目(No.61265005);广西信息科学实验中心重大项目(No.20130101);桂林电子科技大学创新团队项目资助

摘　　要：以常规开口环谐振器(Split ring resonator,SRR)结构的"超材料"太赫兹吸波体为例,首先用CST Microwave Studio软件对吸波体的吸波特性进行仿真。然后,根据横电(TE)模和横磁(TM)模入射时表面电流分布情况,分别建立了超材料太赫兹吸波体对两种入射模式的等效电路模型。最后,从理论上对等效电路模型进行了验证,并利用等效电路模型研究了吸波体结构参数对其吸收峰位置的影响规律。提出的等效电路模型对于"超材料"太赫兹吸波体的结构设计与性能分析具有十分重要的指导和参考价值。The absorption performance of the metamaterial absorber based on common split ring resonator （SRR）is firstly simulated using the CST microwave studio software. Then,according to the surface current distribution,the equivalent circuit models of the metamaterial absorber for the incidences of transverse electric （TE）wave and transverse magnetic （TM）wave are set up. Finally,the equivalent circuit models are theoretically verified. At the same time,by using the equivalent circuit models,the influence of geometric parameters on the change of absorption peak position is discussed. The proposed equivalent circuit models are very important for the structure design and performance analysis of the metamaterial terahertz absorber.

关 键 词：太赫兹 超材料 吸波体 开口环谐振器 等效电路 

分 类 号：TN247[电子电信—物理电子学]