Multi-channeled filtering properties of the sandwich structures composed of epsilon-negative metamaterials
Multi-channeled filtering properties of the sandwich structures composed of epsilon-negative metamaterials
复制标题
ε-负超材料夹层结构的多通道滤波特性
DOI：
10.1063/1.4817890
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发表时间：
2013-08-14
影响因子：
3.2
通讯作者：
Yang, Cheng-Quan
中科院分区：
文献类型：
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作者：
Liu, Yan-Hong;He, Li;Yang, Cheng-Quan
在由两层介电常数由德鲁德模型描述的负介电常数层以及夹在它们之间的另一层常规材料层所构成的三明治结构中发现了多通道滤波特性。通过使用复合左右手传输线成功实现了负介电常数超材料，并在此基础上构建了法布里 - 珀罗（FP）腔。单谐振模式分裂为一些离散的谐振峰，通过几个耦合的FP腔谐振器导致了多通道滤波现象。与传统的多通道滤波器相比，所提出的结构更紧凑且可调谐。微波实验结果与仿真结果相符。（C）2013美国物理联合会出版有限责任公司
Multi-channeled filtering properties are found in the sandwich structure composed of two e-negative layers with dielectric permittivity described by Drude model separated by another normal material layer. Epsilon-negative metamaterials are successfully realized by using composite right/left-handed transmission line, based on which the Fabry–Perot (FP) cavity was also constituted. The single resonant mode is split into some discrete resonant peaks, leading to the multi-channeled filtering phenomenon through the several coupled FP cavity resonators. In comparison with the conventional multichanneled filters, the proposed structure is more compact and tunable. The microwave experiment results are found in agreement with simulation results.