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

doi:10.1088/1674-1056/24/1/014101

›› 2015, Vol. 24 ›› Issue (1): 14101-014101.doi: 10.1088/1674-1056/24/1/014101

• ELECTROMAGNETISM, OPTICS, ACOUSTICS, HEAT TRANSFER, CLASSICAL MECHANICS, AND FLUID DYNAMICS • 上一篇下一篇

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

刘国昌, 李超, 方广有

Key Laboratory of Electromagnetic Radiation and Sensing Technology, Chinese Academy of Sciences, Beijing 100190, China

收稿日期:2014-03-21 修回日期:2014-07-01 出版日期:2015-01-05 发布日期:2015-01-05
基金资助:
Project supported by the National Natural Science Foundation of China (Grant Nos. 11174280, 60990323, and 60990320) and the Knowledge Innovation Program of the Chinese Academy of Sciences (Grant No. YYYJ-1123).

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

Liu Guo-Chang (刘国昌), Li Chao (李超), Fang Guang-You (方广有)

Key Laboratory of Electromagnetic Radiation and Sensing Technology, Chinese Academy of Sciences, Beijing 100190, China

Received:2014-03-21 Revised:2014-07-01 Online:2015-01-05 Published:2015-01-05
Contact: Li Chao E-mail:cli@mail.ie.ac.cn
Supported by:
Project supported by the National Natural Science Foundation of China (Grant Nos. 11174280, 60990323, and 60990320) and the Knowledge Innovation Program of the Chinese Academy of Sciences (Grant No. YYYJ-1123).

摘要/Abstract

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.

关键词: invisible cloak, irregular shape, tensor transmission line metamaterials

Abstract: 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.

Key words: invisible cloak, irregular shape, tensor transmission line metamaterials

中图分类号: (Electromagnetic wave propagation; radiowave propagation)

41.20.Jb

42.25.Fx (Diffraction and scattering) 42.25.Gy (Edge and boundary effects; reflection and refraction) 42.79.-e (Optical elements, devices, and systems)

刘国昌, 李超, 方广有. Experimental demonstration of an invisible cloak with irregular shape by using tensor transmission line metamaterials[J]. , 2015, 24(1): 14101-014101.

Liu Guo-Chang (刘国昌), Li Chao (李超), Fang Guang-You (方广有). Experimental demonstration of an invisible cloak with irregular shape by using tensor transmission line metamaterials[J]. Chin. Phys. B, 2015, 24(1): 14101-014101.

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

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

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