Tunable Transmission-Line Metamaterials Mimicking Electromagnetically Induced Transparency
Tunable Transmission-Line Metamaterials Mimicking Electromagnetically Induced Transparency
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DOI：
10.1007/s11664-016-4807-8
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发表时间：
2016-08
影响因子：
2.1
通讯作者：
T. Feng;H. Han
中科院分区：
文献类型：
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作者：
T. Feng;H. Han
研究了模拟电磁感应透明(EIT)的可调谐传输线(TL)超材料。首先，基于双分裂环谐振器(DSRR)和单裂环谐振器(SSRR)制备了两种可调谐的类TL EIT异质结材料，并对它们的传输特性进行了详细的比较。结果表明，对于可调谐的类Tl EIT超材料，透射率最大值随透明窗口的移动几乎不变，而对于可调谐的类Tl EIT超材料，透过率最大值随着透明窗口向吸收带中心的移动而逐渐减小。此外，还探讨了这些不同透射率的原因，揭示了可调谐SSRR基类TLEIT异质结透明窗透过率极大值降低的主要原因是负载变容二极管的电阻引起的能量损耗。
Tunable transmission-line (TL) metamaterials mimicking electromagnetically induced transparency (EIT) have been studied. Firstly, two types of tunable TL EIT-like metamaterial, based on the double split-ring resonator (DSRR) and single split-ring resonator (SSRR), were fabricated and their transmission properties carefully compared. The results showed that the transmittance maximum was almost invariable with shift of the transparency window for the tunable DSRR-based TL EIT-like metamaterial, but for the tunable SSRR-based TL EIT-like metamaterial, the transmittance maximum gradually diminished with shift of the transparency window toward the center of the absorption band. Moreover, the reason for these different transmission properties was explored, revealing that the reduction of the transmittance maximum of the transparency window for the tunable SSRR-based TL EIT-like metamaterial is mainly due to energy loss caused by the resistance of the loaded varactor diodes.