基于混合球面相位棋盘元曲面的宽带极化不敏感双向雷达截面缩小设计

IF 2.9 3区 材料科学 Q2 MATERIALS SCIENCE, COATINGS & FILMS
Coatings Pub Date : 2024-09-03 DOI:10.3390/coatings14091130
Shun Zhang, Qin Qin, Mengbo Hua
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引用次数: 0

摘要

基于球形棋盘元表面,提出了一种线性和圆极化入射下的宽带偏振不敏感双稳态雷达截面(RCS)减小设计。设计了一种具有宽带特性的新型元表面元件,包括双分裂环结构、单层介质和金属板。在所提出的降低 RCS 设计中,Pancharatnam-Berry(P-B)相位理论被应用于所设计的元表面元件,以实现模仿低散射球的相位分布,从而降低 RCS。此外,棋盘配置与球形相位分布相结合,进一步提高了单静态和双静态 RCS 降低性能。最后,所提出的 RCS 降低设计不仅能实现宽带 RCS 降低,还能表现出偏振不敏感特性。在线性极化(LP)和圆极化(CP)入射条件下,它在 8.5 至 21 GHz 频段(相对带宽 84.8%)内实现了 10 dB 的单静态和双静态 RCS 降低。混合球形棋盘简单高效的设计方法有效避免了 RCS 降低设计中复杂耗时的优化过程。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
A Wideband Polarization-Insensitive Bistatic Radar Cross-Section Reduction Design Based on Hybrid Spherical Phase-Chessboard Metasurfaces
A wideband polarization-insensitive bistatic radar cross-section (RCS) reduction design under linear and circular polarization incidence is proposed based on spherical-chessboard metasurfaces. A new metasurface element with wideband characteristics was designed, including a double split-ring structure, single-layer media, and metal board. In the proposed RCS-reduction design, the Pancharatnam–Berry (P-B) phase theory is applied with the designed metasurface element to realize phase distribution mimicking the low-scattering sphere, and thus realizing RCS reduction. In addition, the chessboard configuration is combined with spherical phase distribution to further improve the performance of monostatic and bistatic RCS reduction. Finally, the proposed RCS reduction design can not only realize wideband RCS reduction but also exhibit polarization-insensitive characteristics. It realized 10 dB monostatic and bistatic RCS reduction in a frequency band ranging from 8.5 to 21 GHz (84.8% relative bandwidth) under linear polarization (LP) and circular polarization (CP) incidence. The straightforward and efficient design method of the hybrid spherical chessboard can effectively avoid the complex and time-consuming optimization process in RCS-reduction design.
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来源期刊
Coatings
Coatings Materials Science-Surfaces, Coatings and Films
CiteScore
5.00
自引率
11.80%
发文量
1657
审稿时长
1.4 months
期刊介绍: Coatings is an international, peer-reviewed open access journal of coatings and surface engineering. It publishes reviews, research articles, communications and technical notes. Our aim is to encourage scientists to publish their experimental and theoretical results in as much detail as possible. There is no restriction on the length of the papers. Full experimental and/or methodical details must be provided. There are, in addition, unique features of this journal: * manuscripts regarding research proposals and research ideas will be particularly welcomed * electronic files or software regarding the full details of the calculation and experimental procedure - if unable to be published in a normal way - can be deposited as supplementary material
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