NDLI: Numerical analysis of a lumped-element-based planar anisotropic cloak

Content Provider	IEEE Xplore Digital Library
Author	Malcic, I. Hrabar, S. Juricev-Sudac, L.
Copyright Year	2011
Description	Author affiliation: University of Zagreb, Faculty of Electrical Engineering and Computing, Dept. of Wireless Communications, Unska 3, Zagreb, HR-10000, Croatia (Malcic, I.; Hrabar, S.; Juricev-Sudac, L.)
Abstract	A transformation electromagnetics (TO) cloak requires highly anisotropic metamaterial, permittivity and/or permeability of which may have values very close to zero (ENZ and/or MNZ metamaterials). Published experimental studies of SRR-based structure clearly proved the existence of cloaking phenomenon. Recently, there have been several attempts to design fully anisotropic cloak using transmission-line-based metamaterials. Here, we show that the bandwidth in both realizations (a volumetric SRR-based cloak or planar TL-based cloak) is constrained by the basic physics and not by applied technology. Briefly, one must use some kind of resonant circuit in order to synthesize either ENZ or MNZ behavior. The detailed circuit simulations showed that is indeed possible to construct a 2D TMz fully anisotropic cloak based on the uniaxial properties of the permeability tensor in cylindrical coordinates. The equivalent permeability and permittivity can be achieved by transmission lines loaded with lumped elements. Such a cloak can have a bandwidth broader than the SRR-based cloak but it is again fundamentally constrained by the bandwidths of used resonant LC circuits.
Starting Page	369
Ending Page	372
File Size	581586
Page Count	4
File Format	PDF
ISBN	9781612849492
ISSN	13342630
e-ISBN	9789537044121
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2011-09-14
Publisher Place	Croatia
Access Restriction	Subscribed
Rights Holder	ELMAR (Electronics in Marines)
Subject Keyword	Cloaking RLC circuits Bandwidth anisotropy Metamaterials Permeability dispersion Permittivity Inductors Dispersion transmission line metamaterial
Content Type	Text
Resource Type	Article

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