纳米秒级时间域编码元表面用于雷达信号生成
Boyang Qian1, Hanjun Zhao1, Xiaohua Zhu1
1School of Electronic and Optical Engineering, Nanjing University of Science and Technology, Nanjing, China.
Nature communications
|November 27, 2025
概括
这项研究引入了一种具有纳米秒相调速的新型时域编码元地表 (TDCM). 这一突破使得更快的电磁波操纵用于高级应用,如频率调制的连续波雷达.
科学领域:
- 电磁波操纵是一种电磁波操纵.
- 超材料工程 超材料工程
- 雷达技术是一种雷达技术.
背景情况:
- 时间域编码元面 (TDCM) 能够快速操纵电磁波谱.
- 目前的TDCM面临相调速度的限制,限制调制带宽和应用.
- 现有的基于瓦拉克的方法受到频率限制的限制.
研究的目的:
- 开发一个具有显著增强相调速的TDCM.
- 为了克服传统的基于变频器的TDCM的频率限制.
- 为了证明新型TDCM在雷达系统中的实际应用.
主要方法:
- 设计了一个使用可重新配置PIN二极管阵列进行快速状态转换的TDCM.
- 在20纳秒内在360°周期内实现相调.
- 扩展了TDCM设计以在Ku和毫米波频段工作.
主要成果:
- 通过PIN-二极管阵列TDCM证明了纳秒级阶段调整 (20 ns).
- 成功生成了一个10MHz带宽频率调制连续波 (FMCW) 信号.
- 在C频段FMCW雷达原型中验证了TDCM的性能,用于无人机测量.
结论:
- 新型PIN-二极管阵列TDCM实现了前所未有的相调速,克服了变频器的限制.
- 这一进步显著提高了用于电磁波操纵的调制带宽.
- 对于高性能雷达系统和其他先进应用,TDCM非常有前途.
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