设计,优化和对宽带偏振转换的比较分析,以及用于RCS减少的双编码序列的宽带偏振转换
1Information and Communication Engineering, Chosun University, Gwangju, 61452, South Korea.
Scientific reports
|April 9, 2024
概括
这项研究介绍了一种宽带极化转换元表面用于雷达截面减小. 该设计在宽频带中实现了超过90%的极化转换比率,在微波工程和雷达隐形方面提供了多功能应用.
科学领域:
- 超材料和纳米光子学
- 电磁学和微波工程 电磁学和微波工程
- 雷达和隐形技术的技术.
背景情况:
- 超表面为高级应用提供独特的电磁特性.
- 有效的偏振转换和雷达截面 (RCS) 减小对于现代电子系统至关重要.
- 现有的设计往往面临带宽或角度稳定性的限制.
研究的目的:
- 设计和演示一个宽带极化转换的 metasurface.
- 通过编码和棋盘配置,为有效的雷达截面减少量身定制元表面.
- 为了研究金属表面在斜倾斜角度和可扩展性下的性能.
主要方法:
- 一个紧的单元电池利用一个空隙来增强带宽被设计和模拟.
- 潘查拉特纳姆-贝里阶段被用来创建1位代码单元用于超表面配置.
- 通过36x36和12x12数组组件评估了可扩展性.
- 雷达截面减小被评估为棋盘和基于编码的 metasurface 模式.
主要成果:
- 单元电池实现了超过90%的极化转换比率 (PCR) 从7.9到22.7 GHz.
- 有效的PCR一直保持在30°斜冲击角度.
- 基于棋盘和编码的超表面都显示了在7.9-22.7 GHz频谱中显著的RCS减少.
- 该设计被证明可以扩展到更大的数组结构.
结论:
- 开发的超表面表现出优异的宽带偏振转换和显著的RCS减速能力.
- 设计的简单性,带宽和多功能性使其适用于各种微波工程和雷达隐形应用.
- 这项工作为极化控制和隐形技术提供了强大而实用的解决方案.
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