基于共面紧凑的宽带隙微波光子晶体研究  

Research on wideband microwave photonic crystals based on UC-EBG structure

作　　者：王伟[1] 曹祥玉[1] 王瑞[2] 周万银[1] 

机构地区：[1]空军工程大学电讯工程学院,陕西西安710077 [2]西北大学信息科学与技术学院,陕西西安710027

出　　处：《光电子．激光》2009年第1期52-55,共4页Journal of Optoelectronics·Laser

基　　金：国家自然科学基金资助项目(60671001);陕西省自然科学基础研究计划资助项目(2005F21);西安市工业攻关基金资助项目(GG06020)

摘　　要：针对一般共面紧凑电磁带隙(UC-EBG)结构相对带宽较窄的问题,根据EBG结构的局域谐振原理和等效电路分析模型,对传统的UC-EBG结构进行了改进,提出了一种新型EBG结构。该结构通过引入弯曲折线延长了电流长度,增大了等效电感效应;采用了更长的边缘耦合,延长了等效磁流,增强了等效电容效应。实验结果表明,这种新型EBG结构在同样紧凑的尺寸下,(带隙)的相对带宽可达40.9%～45.2%,比文献结构提高了约14.6%～18.9%,实现了紧凑宽带隙UC-EBG的设计目的。A novel uniplanar compact electromagnetic band gap(UCEBG)structure is presented based on the physical mechanism of EBG structures and equivalent circuit model.The structure significantly enlarges the equivalent capacitance between neighboring elements,as well as increases the equivalent inductance.So,it becomes even more compact in size,and much wider in relative bandwidth.An experiment has been carried out to verify the validity of the proposed structure.The measured results show that the relative bandwidth of the novel structure reaches 40.9%-45.2% in the same period of the lattice,which increases about 14.6%-18.9% than the oringinal structure.So,the objective to realize compact wideband UC-EBG structure is attained.

关 键 词：微波光子晶体 电磁带隙(EBG) 周期结构 紧凑 宽带隙 

分 类 号：O734[理学—晶体学]