Hybrid-phase approach to achieve broadband monostatic/bistatic RCS reduction based on metasurfaces. (24th June 2020)

• Record Type: Journal Article
• Authors: Wang, Chaohui; Xu, He-Xiu; Wang, Yanzhao; Zhu, Shuai; Wang, Canyu; Mao, Ruiqi
• Is Part Of: Journal of physics. Volume 53:Number 36(2020)
• Publication Date: 2020-06-24
• Subjects: metasurface -- diffusion -- broadband -- radar cross section reduction -- hybrid phase; Physics -- Periodicals; 530
• DOI: 10.1088/1361-6463/ab9266
• Languages: English
• ISSNs: 0022-3727

Abstract

Abstract: In this paper, we propose an approach to design metasurfaces to realize superior performance for monostatic and bistatic radar cross section (RCS) reduction within a wide bandwidth. By engineering four subarrays to exhibit different hybrid focusing-linear phases within a metasurface, nearly uniform diffusive scattering can be inherently guaranteed. As an illustration, we design and fabricate a proof-of-prototype metasurface and experimentally demonstrate its wave-diffusion performances. Numerical and experimental results both show that the thin metasurface enables a monostatic/bistatic 10 dB RCS reduction over a broad bandwidth ranging from 7.2 to 17.2 GHz. In addition, more than 10 dB RCS reduction performance is preserved within a band of 7.8 ∼ 14.2 GHz even for off-normal incidence up to 60°. Our approach features broadband, polarization insensitive, wide incident angles and easy design without time-consuming optimization, promising great potentials in applications of low-scattering stealth.