TY - JOUR
T1 - On the minimal scattering response of PEC cylinders in a dielectric cloak
AU - Valagiannopoulos, Constantinos A.
AU - Alitalo, Pekka
AU - Tretyakov, Sergei A.
N1 - Copyright:
Copyright 2014 Elsevier B.V., All rights reserved.
PY - 2014
Y1 - 2014
N2 - Recently, it was shown that an infinite perfectly electric conducting (PEC) cylinder can be nearly completely cloaked from normally incident electromagnetic waves using a single-layer homogeneous dielectric cladding. In this letter, we introduce a simple model of the cloaked PEC cylinder, of noninfinitesimal electrical size, by replacing it with an omnidirectional electric-line scatterer and a bipolar magnetic one. The analysis of the results shows that the optimal cloaking regime corresponds to the frequency point where the total electric moment is drastically mitigated; in the vicinity of this regime, we observe a behavior similar to Huygens' pairs. This explains the cloaking effect and shows that the radiation patterns of the device are directly controllable through the material parameters of the configuration, a feature that is useful in practical applications.
AB - Recently, it was shown that an infinite perfectly electric conducting (PEC) cylinder can be nearly completely cloaked from normally incident electromagnetic waves using a single-layer homogeneous dielectric cladding. In this letter, we introduce a simple model of the cloaked PEC cylinder, of noninfinitesimal electrical size, by replacing it with an omnidirectional electric-line scatterer and a bipolar magnetic one. The analysis of the results shows that the optimal cloaking regime corresponds to the frequency point where the total electric moment is drastically mitigated; in the vicinity of this regime, we observe a behavior similar to Huygens' pairs. This explains the cloaking effect and shows that the radiation patterns of the device are directly controllable through the material parameters of the configuration, a feature that is useful in practical applications.
KW - Electromagnetic diffraction
KW - electromagnetic radiation
KW - electromagnetic shielding
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U2 - 10.1109/LAWP.2014.2307015
DO - 10.1109/LAWP.2014.2307015
M3 - Article
AN - SCOPUS:84897833399
VL - 13
SP - 403
EP - 406
JO - IEEE Antennas and Wireless Propagation Letters
JF - IEEE Antennas and Wireless Propagation Letters
SN - 1536-1225
M1 - 6746011
ER -