林梦兰博士关于基于可重构反射面的bottle波束调控的相关工作发表在期刊Advanced Photonics Research上
- 发布时间：
- 2023-08-21
- 文章标题：
- 林梦兰博士关于基于可重构反射面的bottle波束调控的相关工作发表在期刊Advanced Photonics Research上
- 内容：
论文题目：Flexible Generation and Manipulation of Microwave Bottle Beam Using a Reconfigurable Metamirror
摘要（英文）：Bottle beams have drawn considerable research interest due to their attractive features and applications in beam trapping. Herein, the flexible generation and modulation of bottle beams utilizing a reconfigurable metamirror over a non-negligible frequency band ranging from 8.5 to 9.5 GHz is investigated. A varactor diode is embedded into each meta-atom on the metamirror enabling the achievement of a nearly 2π phase coverage by varying the external bias voltage. Based on the caustic theory, several configurations of bottle beam with distinct radius a are realized as proof-of-concept validation. Besides, the flexible modulation of the operating frequency is analyzed by judiciously controlling the bias voltages applied to the metasurface. The experimental results are in good agreement with those obtained from numerical simulations. Such a flexible bottle beam generator shows good potential in the microwave regime for near-field applications, such as imaging and power transmission.
摘要（中文）：本论文基于可重构反射超表面提出了一个工作在8.5 GHz到9.5 GHz频段内的bottle波束动态产生和调控器。每个可重构反射单元都嵌入一枚变容二极管以通过变化外加偏置电压来实现单元的2π相位覆盖。基于焦散理论，多种具备不同半径a的bottle波束被实现、验证。此外，通过精确控制加载到超表面的外加偏置电压，bottle波束生成的工作频率的动态调控也被进一步分析。实验结果与理论模拟结果高度吻合。该动态bottle波束生成器在微波领域的近场应用（如，成像和功率传输）体现出良好的可能性。
