非对称开口六边形谐振单环的微波透射特性  

Microwave transmission behavior of the single dissymmetrical hexagonal split-ring resonators

作　　者：姚远[1] 赵晓鹏[1] 赵晶[2] 周欣[1] 

机构地区：[1]西北工业大学电流变技术研究所,西安710072 [2]清华大学电机工程与应用电子技术系,北京100084

出　　处：《物理学报》2006年第12期6435-6440,共6页Acta Physica Sinica

基　　金：国家杰出青年科学基金(批准号:50025207);国家重点基础研究发展规划(批准号:2004CB719805);航空科学基金(批准号:05G53045)资助的课题.~~

摘　　要：受自然界树型结构的启发,设计了分叉树型微结构单元,用电路板刻蚀技术制作了非对称开口六边形谐振单环及其组合结构.采用计算机模拟和实验研究了单个和多个谐振环在微波段(7—12GHz)的电磁响应行为.研究结果表明:该结构具有负磁导率特性,开口谐振环几何尺寸影响环的磁谐振频率;两环环间距较小时出现二次谐振;带高级分支的辐射状环列相对于不带分支环列透射峰向低频移动.实验和模拟结果相符.Inspired by the dendritic geometry in nature, we designed the single dissymmetrical hexagonal split ring resonators （ SRRs）. The SRRs were fabricated on one side of the dielectric substrate using shadow mask/etching technique. By experiments and computer simulations, we have researched the microwave transmission behavior of the SRRs in the frequency band of 7--12 GHz. The results show that, for an individual hexagonal SRR, the resonance frequency is affected by the size of the SRR; for two SRRs, there are two resonance peaks in the transmittion curve when they are close to each other. For three SRRs or the radialized rings, the resonance frequency of the structure with high-level branches shifts towards lower values compared with that with no branches. The simulations are in agreement with the experimental results.

关 键 词：负磁导率 开口谐振环 透射率 

分 类 号：O441.6[理学—电磁学]