多频段超薄反射元表面用于Ku,K和Ka频段的线性和圆形极化转换
Humayun Zubair Khan1,2, Abdul Jabbar3, Jalil Ur Rehman Kazim3
1University of Glasgow, Glasgow, 12G8QQ, UK. humayun.khan@glasgow.ac.uk.
Communications engineering
|September 9, 2024
概括
这项研究引入了一种用于卫星通信和遥感的新型地表极化转换器. 该设备有效地将线性偏振转换为圆形偏振,穿过Ku,K和Ka波段,即使在斜角.
科学领域:
- 电磁学和波浪传播
- 超材料和纳米光子学
- 卫星通信和遥感 卫星通信和遥感
背景情况:
- 在Ku,K和Ka频段的卫星应用中,线性和圆形极化是非常重要的.
- 卫星系统面临的挑战包括大气衰减,噪音,信号退化和不可预测的波浪冲击角度.
- 卫星通信需要双带直角圆极化,特别是在斜角.
研究的目的:
- 提出一种创新的超表面极化转换器,以在Ku,K和Ka频段中高效运行.
- 解决基于卫星的通信和遥感方面的挑战,特别是信号极化转换.
- 为了在电磁波的斜冲击角度下实现强大的性能.
主要方法:
- 设计和模拟一种新型的超表面极化转换器.
- 转换器对左侧圆极化 (LHCP) 和右侧圆极化 (RHCP) 转换的性能描述.
- 使用传统电路板制造技术进行实验验证.
主要成果:
- 超表面转换器实现 Ku 和 Ka 频段 (14.57-15.65 GHz 和 27.47-33.85 GHz) 的 LHCP,以及 K 和 Ka 频段 (17.27-23.92 GHz 和 35.87-38.32 GHz) 的 RHCP,用于 y 极化撞击波.
- 在不同极化状态的特定频段中,实现了超过95%的线性极化转换比率.
- 强大的性能被证明是高达45度的冲击角度,实验结果与模拟密切匹配.
结论:
- 拟议的薄型超表面极化转换器为卫星应用提供高效和宽带性能.
- 与现有文献相比,该设计在结构和性能方面具有竞争优势.
- 经过验证的转换器适用于克服卫星通信和遥感中的极化挑战.
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