Naslov
Analysis of Uniaxial Multilayer Cylinders Used for Invisible Cloak Realization

Autori
Ivšić, Branimir ; Šipuš, Zvonimir ; Hrabar, Silvio

Izvornik
IEEE Transactions on Antennas and Propagation (0018-926X) 57 (2009), 5; 1521-1527

Vrsta, podvrsta i kategorija rada
Radovi u časopisima, članak, znanstveni

Ključne riječi
invisible cloaks; multilayered cylinders; electromagnetic cloak

Sažetak
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 reduce 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 one needs no more than about 6 layers to approximate the continuous constitutive parameter dependence.

Izvorni jezik
Engleski

Znanstvena područja
Elektrotehnika

POVEZANOST RADA