新型小型化的平面左手介质微带线及其后向波特性验证  

Novel miniaturized planar left-handed metamaterial transmissionlines verified by the backward wave property

作　　者：武明峰[1] 孟繁义[1] 傅佳辉[1] 吴群[1] 吴健[1,2] 

机构地区：[1]哈尔滨工业大学电子与信息技术研究院,哈尔滨150001 [2]电波环境特性及模化技术国防科技重点实验室,北京102206

出　　处：《物理学报》2008年第2期822-826,共5页Acta Physica Sinica

基　　金：国家自然科学基金(批准号:60571026);电波环境特性及模化技术国防科技重点实验室项目(批准号:514860303)资助的课题.~~

摘　　要：基于裂缝谐振环结构的降频技术,首先设计了一种电尺寸较小的左手介质微带线单元,并根据电磁波在微带线上的传输和反射数据,分别计算了左手介质的有效介电常数和有效磁导率.之后针对左手介质八元阵列进行三维电磁仿真实验,结果表明该八元阵列在左手介质频段上具有独特的后向波效应,从而证实了该左手介质频段的存在.与传统的左手介质微带单元相比,阐述的左手介质单元的电尺寸减小了60%,而且结构简单,便于加工,适用于平面电路器件的小型化等应用研究工作.Based on the technique of reducing working frequency of split ring resonators （SRR）, this paper presents a miniaturized lefthanded metamaterial transmission line unit, and retrieves the effective permittivity and permeability parameters from the transmission and reflection data. To verify the presence of the left-handed frequency band, 3D numerical simulation is conducted to an array of left-handed metamaterials including eight units, which demonstrates that the left-handed metamaterial microstrip line can support unique backward wave property very well. Compared with conventional left-handed microstrip lines, this structure has been reduced by 60% in electrical sizes, and would be more convenient for fabrication in applications as miniaturized planar circuit components.

关 键 词：左手介质 小型化 双负特性 后向波特性 

分 类 号：O442[理学—电磁学]