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Broad band invisibility cloak made of normal dielectric multilayer
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View: Figures


Image of FIG. 1.
FIG. 1.

(Color online) (a) Scheme of the coordinate transformation and the resulted carpet cloak. (b) Realization of the proposed 3D carpet cloak with multilayer of alternating dielectric 1 and 2. The cloak is covered on a bumped perfect conducting surface enabling a cloaked region underneath.

Image of FIG. 2.
FIG. 2.

(Color online) Full-wave simulations of the magnetic field distributions of incident EM beam interacting with (a) bare conducting bump; (b) bump covered by carpet cloak with a background dielectric with permittivity of 1.75; (c) bump covered by carpet cloak composed of multilayer of FR4 slabs with air spacing. (d) The far field distributions of the scattered EM waves for the different cases indicated by the legends.

Image of FIG. 3.
FIG. 3.

(Color online) Photographs of (a) the fabricated multilayer cloak and (b) the measurement system.

Image of FIG. 4.
FIG. 4.

(Color online) Experimental scheme and the measured results of the far-field scattering EM field magnitude as a function of azimuth angle and frequency. (a) and (b) the flat conducting sheet; (c) and (d) the bare conducing bump; and (e) and (f) bump covered by the multilayer carpet cloak.


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752b84549af89a08dbdd7fdb8b9568b5 journal.articlezxybnytfddd
Scitation: Broad band invisibility cloak made of normal dielectric multilayer