Meng Li, Shuang Han, Haiyong Gan, Chenxia Li, Jianjun Liu, Zhi Hong, Xufeng Jing,
https://link.springer.com/article/10.1007%2Fs10762-019-00617-w
A metasurface provides a completely new path to realize a cloaking effect by using phase compensation. However, the traditional invisible cloaks by using metasurfaces are limited at the narrow bandwidth and angle response. Here, we propose a multilayer metasurface to construct a cloak device, and more geometric freedom ensures the broadband and wide-angle response of our designed cloak. The invisible effect is revealed by near-field and far-field distribution for the ground plane, bare bump, and cloak, respectively. Our designed cloaking with the metasurface composed of five-layer unit cell structure has a good invisible effect at the broadband range from 0.7 to 0.8 THz and has a wide-angle response from 35 to 50°.
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