Effect of loss and coupling on the resonance of metamaterial: An equivalent circuit approach

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• 作者：YongGang Zhang (1) (2)
  JingBo Wu (1)
  LanJu Liang (1)
  GaoChao Zhou (1)
  BiaoBing Jin (1)
  YiJun Feng (3)
  
• 关键词：metamaterials ; equivalent circuit ; resonant property ; coupling ; frequency splitting ; 浜哄伐鐢电鏉愭枡 ; 鐢佃矾妯″瀷 ; 璋愭尟鐗规€?/li> 鑰﹀悎 ; 棰戠巼鍔堣
• 刊名：SCIENCE CHINA Information Sciences
• 出版年：2014
• 出版时间：December 2014
• 年：2014
• 卷：57
• 期：12
• 页码：1-8
• 全文大小：838 KB
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• 作者单位：YongGang Zhang (1) (2)
  JingBo Wu (1)
  LanJu Liang (1)
  GaoChao Zhou (1)
  BiaoBing Jin (1)
  YiJun Feng (3)
  
  1. Research Institute of Superconductor Electronics (RISE), School of Electronic Science and Engineering, Nanjing University, Nanjing, 210093, China
  2. School of Electrical and Information Engineering, Anhui University of Science and Technology, Huainan, 232001, China
  3. Department of Electronic Engineering, School of Electronic Science and Engineering, Nanjing University, Nanjing, 210093, China
  
• ISSN：1869-1919

文摘

In this work we establish an equivalent circuit model to analyze the resonace of the metamaterial considering the loss of the unit cell and coupling effect between them. From this model, we find that metamaterial can be divided into three categories: weak, critical and strong couplings, depending on the values of the loss and coupling strength, where the different resonant properties are presented. The physical reason of the division is whether the loss in each unit cell can be offset by energy coupling from the adjunct unit cells. Full-wave electromagnetic simulations have also been carried out to verify the equivalent circuit analysis. Our circuit analysis provides a simple and effective way to understand the coupling of the metamaterial and gives guidance for the analysis and design of the metamaterial.