全空间可编程元表面用于控制在相同偏振和相同频段下的反射和传输波
Hao Tian Shi1,2, Rui Yuan Wu1,2, Lei Bao1,3
1State Key Laboratory of Millimeter Waves, Southeast University, Nanjing, 210096, China.
Small (Weinheim an der Bergstrasse, Germany)
|April 30, 2025
概括
这项研究介绍了一种全新的全空间可编程超表面,用于动态控制电磁波. 它可以实时,独立地对相同频率和偏振频段的反射和发射信号进行操纵.
科学领域:
- 电磁波操纵是一种电磁波操纵.
- 地表表面技术的技术.
- 应用物理学的应用物理学
背景情况:
- 超表面提供了对电磁波 (EM) 的高级控制.
- 现有的超表面通常通过频率或极化来分离控制.
- 实时控制仍然是地表应用中的一个重大挑战.
研究的目的:
- 提出一个全新的全空间可编程超表面.
- 为了实现反射和发射电磁波的动态和独立控制.
- 为了在相同的极化和频段内实现实时操纵.
主要方法:
- 使用五个PIN二极管的反射传输类型元原子的设计.
- 切换PIN二极管状态,以独立调节发射和反射波的相位.
- 使用现场可编程网关阵列 (FPGA) 进行实时模式控制.
- 制造和测试一个16x8元原子原型.
主要成果:
- 证明了反射和发射EM波相的独立控制.
- 实现了传递和反射模式的动态控制.
- 成功实现了光束成型和光束聚焦功能.
- 验证了超表面强大的电磁操纵能力.
结论:
- 拟议的超表面克服了分离控制的局限性.
- 它提供实时的动态,全空间电磁波控制.
- 在传感和无线通信方面的潜在应用是显著的.
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