Analysis of Uniaxial Multilayer Cylinders Used for Invisible Cloak Realization

Uniaxial multilayer cylinder cloaks have recently been proposed to prevent scattering of electromagnetic waves. These cloaks are based on spatial variation of constitutive parameters within the structure by means of metamaterials. A mathematical description of invisibility in such cloaks is provided...

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Bibliographic Details
Published in:IEEE transactions on antennas and propagation 2009-05, Vol.57 (5), p.1521-1527
Main Authors: Ivsic, B., Sipus, Z., Hrabar, S.
Format: Article
Language:English
Subjects:
Algorithm design and analysis
Applied classical electromagnetism
Applied sciences
Approximation
Cylinders
Diffraction, scattering, reflection
Dispersions
Electromagnetic propagation in anisotropic media
electromagnetic propagation in dispersive media
Electromagnetic scattering
electromagnetic scattering by anisotropic media
electromagnetic scattering by dispersive media
Electromagnetic wave propagation, radiowave propagation
Electromagnetism
electron and ion optics
Exact sciences and technology
Filling
Frequency
Fundamental areas of phenomenology (including applications)
Green's function methods
Mathematical analysis
Metamaterials
Modal analysis
Multilayers
Nonhomogeneous media
Permittivity
Physics
Radiocommunications
Radiowave propagation
Scattering
Scattering parameters
Spectra
Telecommunications
Telecommunications and information theory
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Summary:Uniaxial multilayer cylinder cloaks have recently been proposed to prevent scattering of electromagnetic waves. These cloaks are based on spatial variation of constitutive parameters within the structure by means of metamaterials. A mathematical description of invisibility in such cloaks is provided. The analysis approach is based on modal analysis of cylindrical multilayer structures. In order to analyze structures with arbitrary number of layers, an algorithm to calculate spectral-domain Green's functions of uniaxial multilayer structures has been developed. The results show that the recently introduced metamaterial cloaks with reduced variation of constitutive parameters can decrease the total scattering width up to a factor of three, but only in a narrow frequency band due to dispersion in the filling material. Furthermore, it is shown that in the analyzed structures already 6 layers of constant permittivity and permeability approximate well the continuous dependence of constitutive parameters.
ISSN:0018-926X
1558-2221
DOI:10.1109/TAP.2009.2016695