ABSTRACT
An out-of-plane coordinate transformation can avoid singular materials in a two-dimensional electromagnetic cloak. Based on numerical simulations of elliptical cylinders, in this paper we show that the use of two different constants to define the out-of-plane stretching can result in anisotropic materials with lower values and yet with a better scattering reduction for a given incident wave direction.
Disclosure statement
No potential conflict of interest was reported by the authors.
ORCID
Fábio J. F. Gonçalves http://orcid.org/0000-0003-0086-2148
Alfred G. M. Pinto http://orcid.org/0000-0001-6799-0238
Renato C. Mesquita http://orcid.org/0000-0003-1837-1355
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Notes on contributors
Fábio J. F. Gonçalves
Fábio J. F. Gonçalves received the BS degree in Electronics and Telecommunication Engineering from Pontifical Catholic University of Minas Gerais in 2006; MS (2012) and PhD (2016) degrees in Electrical Engineering from Federal University of Minas Gerais, where he is a postdoctoral researcher. His interests include numerical and applied electromagnetics, characterization of materials and design of metamaterials.
Alfred G. M. Pinto
Alfred G. M. Pinto received the BS degree in Mathematics from the Federal University of Minas Gerais in 2002, BS and MS degrees in Electrical Engineering from the Federal Center of Technological Education of Minas Gerais (2012) and PhD degree (2017) in Electrical Engineering from the Federal University of Minas Gerais. His main interests are in numerical methods and applied electromagnetics.
Renato C. Mesquita
Renato C. Mesquita received the BS and MS degrees in Electrical Engineering from the Federal University of Minas Gerais, Brazil, in 1982 and 1986, respectively, and the PhD degree in Electrical Engineering from the Federal University of Santa Catarina, Brazil, in 1990. He is with the Department of Electrical Engineering, Federal University of Minas Gerais. His main research interest is in the area of electromagnetic field computation.
Elson J. Silva
Elson J. Silva received the BS and MS degrees in Electrical Engineering from the Federal University of Minas Gerais, Brazil, in 1987 and 1990, respectively, and the PhD in Electrical Engineering from the University of Akron in 2000. He is with the Department of Electrical Engineering, Federal University of Minas Gerais. His research interests include discrete exterior calculus, finite element method, modeling of coupled problems and electromagnetic metamaterials.