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Suppressing the Electromagnetic Scattering With an Helical Mantle Cloak

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3 Author(s)
Pai-Yen Chen ; Electr. & Comput. Eng. Dept., Univ. of Texas at Austin, Austin, TX, USA ; Monticone, F. ; Alu, A.

Following our recent findings on achieving invisibility and transparency using low-profile mantle cloaks, we propose a practical implementation of an RF cloak made of a simple metallic helical sheath, whose anisotropic surface impedance can provide scattering cancellation for dielectric cylinders over a moderately broad bandwidth. By properly selecting the pitch angle of the con- ducting helix, the effective surface reactance is tailored to drastically suppress the scattering from a dielectric infinite cylinder. This simple but effective surface cloaking technique may be of particular interest to low observability and camouflaging, noninvasive probing, and low-interference communications.

Published in:

Antennas and Wireless Propagation Letters, IEEE  (Volume:10 )