Naslov
Optimization of Uniaxial Multilayer Cylinders Used for Invisible Cloak Realization

Autori
Ivšić, Branimir ; Komljenović, Tin ; Šipuš, Zvonimir ;

Izvornik
IEEE transactions on antennas and propagation (0018-926X) 58 (2010), 10; 3397-3401

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

Ključne riječi
electromagnetic propagation in anisotropic media; electromagnetic propagation in dispersive media; electromagnetic scattering by anisotropic media; electromagnetic scattering by dispersive media

Sažetak
Uniaxial cylindrical cloaks have recently been proposed to prevent the scattering of electromagnetic waves, i.e. to render objects invisible. While it is possible to achieve that the rays follow the proper path inside the cloak, the proposed cloaks with reduced variation of constitutive parameters suffer from nonzero reflectance. The purpose of this paper is to improve invisibility performance of the original cloak structure in terms of total scattering width reduction and the operating frequency bandwidth. Therefore, the program for analyzing uniaxial cylindrical structures is merged with the global optimization program based on the particle swarm optimization algorithm. The results show that it is possible either to obtain the “perfect” cloak at the expense of bandwidth or to improve the operating frequency bandwidth at the expense of limited reduction of total scattering width.

Izvorni jezik
Engleski

Znanstvena područja
Elektrotehnika

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