Experimental demonstration of an invisible cloak with irregular shape by using tensor transmission line metamaterials  

作　　者：刘国昌 李超 方广有 

机构地区：[1]Key Laboratory of Electromagnetic Radiation and Sensing Technology, Chinese Academy of Sciences

出　　处：《Chinese Physics B》2015年第1期247-252,共6页中国物理B（英文版）

基　　金：Project supported by the National Natural Science Foundation of China(Grant Nos.11174280,60990323,and 60990320);the Knowledge Innovation Program of the Chinese Academy of Sciences(Grant No.YYYJ-1123)

摘　　要：We present the design and the experimental demonstration of an invisible cloak with irregular shape by using tensor transmission line（TL） metamaterials. The fabricated cloak consists of tensor TL unit cells exhibiting anisotropic effective material parameters, while the background medium consists of isotropic TL unit cells. The simulated and the measured field patterns around the cloak show a fairly good agreement, both demonstrate that the fabricated cloak can shield the cloaked interior area from electromagnetic fields without perturbing the external fields. The scattering of the cloaked perfect electric conductor（PEC） is minimized. Furthermore, the nonresonant property of the TL structure results in a relatively broad bandwidth of the realized cloak, which is clearly observed in our experiment.We present the design and the experimental demonstration of an invisible cloak with irregular shape by using tensor transmission line（TL） metamaterials. The fabricated cloak consists of tensor TL unit cells exhibiting anisotropic effective material parameters, while the background medium consists of isotropic TL unit cells. The simulated and the measured field patterns around the cloak show a fairly good agreement, both demonstrate that the fabricated cloak can shield the cloaked interior area from electromagnetic fields without perturbing the external fields. The scattering of the cloaked perfect electric conductor（PEC） is minimized. Furthermore, the nonresonant property of the TL structure results in a relatively broad bandwidth of the realized cloak, which is clearly observed in our experiment.

关 键 词：invisible cloak irregular shape tensor transmission line metamaterials 

分 类 号：O441[理学—电磁学]