Naslov
Feasibility of Use of Lumped Elements in Anisotropic 2D Cloak

Autori
Hrabar, Silvio ; Malcic, Iva ; Nanut, Srdan ; Juricev-Sudac, Luka

Vrsta, podvrsta i kategorija rada
Radovi u zbornicima skupova, cjeloviti rad (in extenso), znanstveni

Izvornik
Proceedings on 20th International Conference on Applied Electromagnetics and Communications 2010 / Bonefacic, Davor ; Bosiljevac - Zagreb : Hrvatsko društvo za komunikacije, računarstvo, elektroniku, mjerenja I automatiku (KoREMA), 2010, S07P04-1

ISBN
978-953-6037-58-2

Skup
20th International Conference on Applied Electromagnetics and Communications 2010

Mjesto i datum
Dubrovnik, Hrvatska, 20.09.2010. - 23.09.2010

Vrsta sudjelovanja
Predavanje

Vrsta recenzije
Međunarodna recenzija

Ključne riječi
cloaking; metamerial; lumped element

Sažetak
Practical realization of an electromagnetic cloak based on the transformation electromagnetics requires the existence of highly anisotropic metamaterial, permittivity and/or permeability of which may have values very close to zero (ENZ and/or MNZ metamaterials). Published experiments on the SRR-based cloaks proved the validity of the basic idea but also showed two significant drawbacks: very complicated design and an extremely narrow bandwidth. Another possible design might use the transmission-line-based metamaterial, which is usually stated as being inherently broadband. Here, it is shown that the bandwidth is actually constrained by the basic physics and not by applied technology. There is always some minimal value of capacitance or inductance that can be achieved within some differential volume of space. Thus, one must use some kind of resonant circuit in order to achieve the ENZ or MNZ behavior. The circuit simulations showed that is indeed possible to construct a 2D TMz fully anisotropic cloak based on the transmission linesloaded with lumped elements. Such a cloak might have a bandwidth broader than the SRR-based cloak but it is again fundamentally constrained by the bandwidths of used resonant LC circuits.

Izvorni jezik
Engleski

Znanstvena područja
Elektrotehnika

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