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

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

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.

Keywords: invisible cloak irregular shape tensor transmission line metamaterials

Received: 21 March 2014
Revised: 01 July 2014
Accepted manuscript online:

PACS:	41.20.Jb	(Electromagnetic wave propagation; radiowave propagation)
	42.25.Fx	(Diffraction and scattering)
	42.25.Gy	(Edge and boundary effects; reflection and refraction)
	42.79.-e	(Optical elements, devices, and systems)

Fund: 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).

Corresponding Authors: Li Chao
E-mail: cli@mail.ie.ac.cn

Cite this article:

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 2015 Chin. Phys. B 24 014101

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

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