Wideband radar cross section reduction using two-dimensional phase gradient metasurfaces

被引：187
作者：
Li, Yongfeng [1 ]
Zhang, Jieqiu [1 ,2 ]
Qu, Shaobo [1 ]
Wang, Jiafu [1 ]
Chen, Hongya [1 ]
Xu, Zhuo [2 ]
Zhang, Anxue [3 ]
机构：
[1] Air Force Engn Univ, Coll Sci, Xian 710051, Shaanxi, Peoples R China
[2] Xi An Jiao Tong Univ, Elect Mat Res Lab, Key Lab, Minist Educ, Xian 710049, Shaanxi, Peoples R China
[3] Xi An Jiao Tong Univ, Sch Elect & Informat Engn, Xian 710049, Shaanxi, Peoples R China
来源：
APPLIED PHYSICS LETTERS | 2014年 / 104卷 / 22期
基金：
美国国家科学基金会; 中国国家自然科学基金;
关键词：
SURFACE-PLASMON POLARITONS; FLAT LENSES; REFRACTION; LIGHT; DISCONTINUITIES; REFLECTION; OPTICS;
D O I：
10.1063/1.4881935
中图分类号：
O59 [应用物理学];
学科分类号：
摘要：
Phase gradient metasurface (PGMs) are artificial surfaces that can provide pre-defined in-plane wave-vectors to manipulate the directions of refracted/reflected waves. In this Letter, we propose to achieve wideband radar cross section (RCS) reduction using two-dimensional (2D) PGMs. A 2D PGM was designed using a square combination of 49 split-ring sub-unit cells. The PGM can provide additional wave-vectors along the two in-plane directions simultaneously, leading to either surface wave conversion, deflected reflection, or diffuse reflection. Both the simulation and experiment results verified the wide-band, polarization-independent, high-efficiency RCS reduction induced by the 2D PGM. (C) 2014 AIP Publishing LLC.
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页数：5
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