在微波波段中使用Pancharatnam-Berry和共振相的极化不敏感的传输元表面
Ling Wang1,2, Yang Yang3, Feng Gao1,2
1School of Electronic Information, Hunan First Normal University, Changsha 410205, China.
Sensors (Basel, Switzerland)
|December 9, 2023
概括
这项研究引入了极化不敏感的微波超表面,可以控制任何极化状态的波. 这克服了现有的极化敏感设备的局限性,用于更广泛的应用.
科学领域:
- 电磁学和元材料的使用
- 波浪操纵技术技术 波浪操纵技术
背景情况:
- 现有的超表面通常是极化敏感的,这限制了它们的实际应用.
- 控制具有任意极化状态的电磁波仍然是一个重大挑战.
研究的目的:
- 开发极化不敏感的传递式微波元表面,能够操纵随意的线性和圆形极化状态的发生波.
- 为了证明拟议的超表面设计的有效性,用于金属镜和轨道角运动量复杂化等实际应用.
主要方法:
- 设计两极化不敏感的单元细胞,这些单元细胞结合了Pancharatnam-Berry (PB) 和共振相.
- 在左侧循环偏振 (LCP) 和右侧循环偏振 (RCP) 碰撞波中实现完整的0°至360°的突然相位转移.
- 通过将它们分解成LCP和RCP组件来验证任意线性极化状态的超表面设计.
主要成果:
- 展示了一个极化不敏感的传输微波金属和一个运行在23GHz的轨道角动量多重化元表面.
- 模拟和测量结果证实了对具有任意极化状态的波的成功操纵.
- 设计的超表面表现出极化不敏感性,比传统设计显著改进.
结论:
- 拟议的策略允许设计极化不敏感的传递式微波元表面.
- 这种方法克服了现有的元表面的极化敏感性限制,为更广泛的实际应用铺平了道路.
- 该方法适用于创建具有增强极化控制能力的先进微波设备.
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