【摘 要】
：
提出了一种具有宽带雷达散射截面缩减特性的1 bit编码超表面。该超表面由两种单元组成:“0”单元和“1”单元,其反射相位差在很宽的频段范围内接近180?。通过对这两种基本单
【机 构】
：
西安电子科技大学天线与微波技术国家重点实验室,
论文部分内容阅读
提出了一种具有宽带雷达散射截面缩减特性的1 bit编码超表面。该超表面由两种单元组成:“0”单元和“1”单元,其反射相位差在很宽的频段范围内接近180?。通过对这两种基本单元的空间排布进行编码设计,使入射电磁波发生漫反射,可以实现雷达散射截面的缩减。全波仿真结果表明,在垂直入射的情况下,相对于同尺寸的金属板,该超表面可在10-20.5GHz的宽频段内基本实现10 d B以上雷达散射截面缩减,最大缩减量达到20.8 d B。该超表面具有低剖面、重量轻、频带宽等特点,因而在隐身新技术和新材料方面具有很大的应用潜力。
A 1-bit encoded super-surface with wideband radar cross-section reduction is proposed. The super-surface consists of two elements: the “0” cell and the “1” cell, whose reflection phase difference approaches 180 ° over a wide frequency band. Through the coding design of the spatial arrangement of the two basic units, the incident electromagnetic wave is diffusely reflected, and the reduction of the radar cross section can be achieved. Full-wave simulation results show that in the case of normal incidence, the super-surface can basically reduce the cross-section of radar scattering more than 10 dB in the frequency range of 10-20.5 GHz with the maximum reduction of 20.8 d B. The ultra-low profile surface, light weight, bandwidth and other characteristics, and therefore stealth new technologies and new materials has great potential applications.
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