Random Combinatorial Gradient Metasurface for Broadband, Wide-Angle and Polarization-Independent Diffusion Scattering

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 cover...

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Bibliographic Details
Published in:Scientific reports 2017-11, Vol.7 (1), p.16560-10, Article 16560
Main Authors: Zhuang, Yaqiang, Wang, Guangming, Liang, Jiangang, Cai, Tong, Tang, Xiao-Lan, Guo, Tongfeng, Zhang, Qingfeng
Format: Article
Language:English
Subjects:
639/166/987
639/766/1130
Bandwidths
Design
Humanities and Social Sciences
multidisciplinary
Musical performances
Polarization
Science
Science (multidisciplinary)
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Summary: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 2π 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.
ISSN:2045-2322
2045-2322
DOI:10.1038/s41598-017-16910-4