Broadband exterior cloaking.

Active Exterior Cloaking

A new method of cloaking is presented. For two-dimensional quasistatics it is proven how a single active exterior cloaking device can be used to shield an object from surrounding fields, yet produce very small scattered fields. The problem is reduced to finding a polynomial which is approximately one within one disk and zero within a second disk, and such a polynomial is constructed. For the tw...

Transformation optics: approaching broadband electromagnetic cloaking

An approach to broadband cloaking of light waves is analysed for a simplified case of a scaling transformation for a general cylindrical coordinate system. The proposed approach requires metamaterials with specifically engineered dispersion. The restriction on the signs of gradients in the dispersion dependencies of the dielectric permittivity and the magnetic permeability for different operati...

Differential Form Approach to the Analysis of Electromagnetic Cloaking and Masking

We discuss the relationship between (a) electromagnetic masking or cloaking of objects produced by some metamaterial blueprints and (b) some invariances of Maxwell equations obviated by means of differential forms (exterior calculus). © 2007 Wiley Periodicals, Inc. Microwave Opt Technol Lett 49: 2051–2053, 2007; Published online in Wiley InterScience (www.interscience.wiley.com). DOI 10.1002/mo...

A New Implementation of Frequency Selective Surface Cloak for Cylindrical Structures

The main purpose of this paper is to design, implement and measure a new sample of mantle cloak. A new method called mantle cloak is introduced by cloaking an object by a single, conformal meta-surface which can drastically suppress the scattering of the desired object. In this paper, a grid lattice is placed around a dielectric object as the cloaking structure. Previously, this FSS has been ut...

Source amplitudes for active exterior cloaking