期刊
SCIENTIFIC REPORTS
卷 7, 期 -, 页码 -出版社
NATURE PUBLISHING GROUP
DOI: 10.1038/s41598-017-16910-4
关键词
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资金
- National Natural Science Foundation of China [61372034, 61401191]
- Natural Science Foundation of Shaanxi Province [2016JM6063]
- Guangdong Natural Science Funds for Distinguished Young Scholar [2015A030306032]
- Guangdong Special Support Program [2016TQ03X839]
- Shenzhen Science and Technology Innovation Committee funds [KQJSCX201602 26193445, JCYJ20150331101823678 KQCX2015033110182368, JCYJ20160301113918121, JSGG20160427105120572]
- Shenzhen Development and Reform Commission Funds [[2015]944]
This paper proposes an easy, efficient strategy for designing broadband, wide-angle and polarization-independent diffusion metasurface for radar cross section (RCS) reduction. A dual-resonance unit cell, composed of a cross wire and cross loop (CWCL), is employed to enhance the phase bandwidth covering the 2 pi range. Both oblique-gradient and horizontal-gradient phase supercells are designed for illustration. The numerical results agree well with the theoretical ones. To significantly reduce backward scattering, the random combinatorial gradient metasurface (RCGM) is subsequently constructed by collecting eight supercells with randomly distributed gradient directions. The proposed metasurface features an enhanced specular RCS reduction performance and less design complexity compared to other candidates. Both simulated and measured results show that the proposed RCGM can significantly suppress RCS and exhibits broadband, wide-angle and polarization independence features.
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