A miniature inhomogeneous cloak following a power law

Article type: Research Article

Authors: Valagiannopoulos, Constantinos A.^a

Affiliations: [a] School of Electrical Engineering, Aalto University, Espoo FIN-02105, Finland. E-mail: konstantinos.valagiannopoulos@aalto.fi

Abstract: A cloaking device comprised of a metallic cloaked region and a radially inhomogeneous cladding, obeying to a power law, is analyzed. Semi-analytical approximations are performed and simple formulas of the coating's optimal material profile are derived, based on the structure's miniature size. The variations of the coating's permittivities with respect to the operating frequency and the physical dimensions of the structure are shown and discussed.

Keywords: Cylindrical cloak, inhomogeneous coating, power-law

DOI: 10.3233/JAE-121645

Journal: International Journal of Applied Electromagnetics and Mechanics, vol. 42, no. 1, pp. 63-71, 2013