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X-band Γ-shaped anisotropic metasurface-based perfect cross-polarizer for RCS reduction
Journal of Electromagnetic Waves and Applications ( IF 1.3 ) Pub Date : 2020-05-02 , DOI: 10.1080/09205071.2020.1759462
Priyanka Tiwari 1, 2 , Surya Kumar Pathak 1, 2 , Anitha V. p. 1, 2 , Varsha Siju 1, 2 , Abhishek Sinha 1, 2
Affiliation  

ABSTRACT In this paper, an X-band perfect cross-polarization convertor (CPC) that consists of Γ-shaped metal patch imprinted on a metal-backed FR-4 dielectric substrate is designed, analyzed, and characterized. The unit cell dimensions of the developed structure are optimized to achieve more than 99.9% polarization conversion ratio (PCR) for a frequency range of 8–12 GHz (X-band) at normal incidence angle. The performance of device exhibits 80% PCR value as a function of angle of incidence up to 40°. The analytical finding and experimental characteristics of the designed structure agree well with the simulated results. In addition, the developed device has been thoroughly analyzed numerically for radar cross-section (RCS) reduction using phase cancellation techniques which exhibits 10-dB mono-static RCS reduction over a frequency band 7.7 GHz to 13.7 GHz. The developed device is highly suitable for radar stealth applications.

中文翻译:

基于 X 波段 Γ 形各向异性超表面的完美交叉偏振器用于 RCS 减少

摘要 在本文中,设计、分析和表征了一种 X 波段完美交叉极化转换器 (CPC),该转换器由印在金属背衬 FR-4 介电基板上的 Γ 形金属贴片组成。所开发结构的晶胞尺寸经过优化,可在垂直入射角的 8-12 GHz(X 波段)频率范围内实现超过 99.9% 的偏振转换率 (PCR)。设备的性能表现出 80% 的 PCR 值,作为高达 40° 的入射角的函数。设计结构的分析结果和实验特性与模拟结果非常吻合。此外,使用相位抵消技术对所开发的设备进行了全面的雷达横截面 (RCS) 减小数值分析,该技术在频段 7 上表现出 10-dB 单静态 RCS 减小。7 GHz 至 13.7 GHz。开发的设备非常适合雷达隐身应用。
更新日期:2020-05-02
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