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Wideband radar cross section reduction using two-dimensional phase gradient metasurfaces
被引:185
|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
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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