Invisibility Cloaks Modeled by Anisotropic Metamaterials Based on Inductor-Capacitor Networks

Author

Liu, Xiao ; Li, Chao ; Yao, Kan ; Meng, Xiankun ; Li, Fang

Author_Institution

Inst. of Electron., Chinese Acad. of Sci., Beijing, China

Volume

8

fYear

2009

fDate

7/1/1905 12:00:00 AM

Firstpage

1154

Lastpage

1157

Abstract

Based on the transformation optics, a novel transmission-line (TL) approach to realize invisibility cloaking using planar anisotropic metamaterials (MTMs) is proposed. The two-dimensional (2D) cylindrical cloaks are modeled based on inductor-capacitor (LC) MTMs networks. The three elements of the constitutive parameters mu_tau, mu_thetas, and epsiv_zeta are all allowed to be spatially inhomogeneous, which leads to the full parameter realization of a cylindrical cloak. As an example, a cloak working at VHF band is modeled, and its invisibility behavior is demonstrated based on the solution of the node voltage distribution. Due to the nonresonant properties of the LC elements, the broadband characteristic of the proposed cloaks is also evident.

Keywords

anisotropic media; metamaterials; radiowave propagation; transmission lines; 2D cylindrical cloak modeling; LC MTM network; LC elements; VHF band; broadband characteristics; incident electromagnetic wave; inductor-capacitor network; invisibility cloaking; node voltage distribution; nonresonant property; planar anisotropic metamaterial; transformation optics; transmission line approach; two-dimensional cylindrical cloak; Cloaking; inductor-capacitor (LC); invisibility; metamaterials (MTMs); transmission line (TL);

fLanguage

English

Journal_Title

Antennas and Wireless Propagation Letters, IEEE

Publisher

ieee

ISSN

1536-1225

Type

jour

DOI

10.1109/LAWP.2009.2034675

Filename

5288604