Suppressing the Electromagnetic Scattering With an Helical Mantle Cloak
Suppressing the Electromagnetic Scattering With an Helical Mantle Cloak
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DOI：
10.1109/lawp.2011.2179001
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发表时间：
2011-01-01
影响因子：
4.2
通讯作者：
Alu, Andrea
中科院分区：
文献类型：
--
作者：
Chen, Pai-Yen;Monticone, Francesco;Alu, Andrea
根据我们最近关于使用薄型地幔斗篷实现隐形和透明的发现，我们提出了一种由简单金属螺旋护套制成的射频斗篷的实际实现，其各向异性表面阻抗可以在适度宽的带宽上为介电圆柱体提供散射消除。通过正确选择导电螺旋的螺距角，可以调整有效表面电抗，以显着抑制介电无限圆柱体的散射。这种简单但有效的表面隐身技术可能对低可观测性和伪装、非侵入性探测和低干扰通信特别感兴趣。
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 conducting 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.