在基于二氧化瓦纳的反射和传输模式中可切换线性到循环极化转换.
Eman M Eldesouki1, Ahmed Elsayed Abouelez2
1Microwave Engineering Department, Electronics Research Institute (ERI), Cairo, Egypt. eman@eri.sci.eg.
Scientific reports
|August 6, 2025
概括
本研究介绍了一种可切换的双模式线性到循环极化转换器 (LTC-PC),使用二氧化瓦纳 (VO2) 进行太赫兹 (THz) 应用. 该设备可以在传输或反射模式下工作,为THz通信系统和传感器提供多功能极化转换.
科学领域:
- 电磁学和光学 电磁学和光学
- 材料科学 材料科学 材料科学
- 纳米技术 纳米技术
背景情况:
- 太赫兹 (THz) 技术需要高效的极化控制元件.
- 二氧化瓦纳 (VO2) 呈现可调节的相位过渡,使其适用于动态电磁设备.
- 开发可切换的偏振转换器对于先进的THz系统至关重要.
研究的目的:
- 在THz频段设计和演示可切换的双模式线性向循环极化转换器 (LTC-PC).
- 通过调整 VO2 的状态,使转换器能够在传输和反射模式中运行.
- 在轴比和偏振转换效率方面实现高性能.
主要方法:
- 使用二氧化瓦纳 (VO2) 作为模式切换的活性物质.
- 研究设备在绝缘 (传输模式) 和金属 (反射模式) VO2 状态中的性能.
- 分析表面电流分布和极化圆,以了解转换机制.
主要成果:
- 转换器在传输模式下运行,LTC偏振转换在1.26-1.47 THz和1.83-1.85 THz之间,并且在1.7 THz.
- 在反射模式下,循环偏振转换在0.93-1.67 THz和1.80-1.86 THz之间实现.
- 双模式转换器的轴向比低于3dB,极化转换效率大于0.8.8.
结论:
- 拟议的基于VO2的LTC-PC提供了高性能和双重功能.
- 转换器的可切换性允许在THz系统中灵活操作.
- 这种设计有可能用于THz通信和传感技术.
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