一个双层频率选择性表面,可调节的传输和固定的吸收带
Zhiming Zhang1, Qingyang Wang1, Qiyuan Wang1
1School of Information Engineering, Wuhan University of Technology, Wuhan 430070, China.
Materials (Basel, Switzerland)
|September 27, 2025
概括
本研究介绍了双层频率选择面 (FSS),提供可调的L频段传输和高性能吸收. 该设计可动态控制频率划分,用于多功能电磁应用.
科学领域:
- 电磁学和元材料的使用
- 微波工程 微波工程
- 应用物理 应用物理
背景情况:
- 频率选择面 (FSS) 对于控制电磁波传播至关重要.
- 现有的FSS设计往往缺乏动态捕能力和多功能功能.
- 在无线通信中,对具有集成传输和吸收的先进FSS的需求正在增长.
研究的目的:
- 介绍一款具有集成频率划分控制的新型双层FSS.
- 为了在L频段实现可调节的传输窗口,在更高频段实现高吸收.
- 通过模拟和测量验证设计.
主要方法:
- 设计和制造了一种双层FSS架构.
- 底部的FSS层使用梯度间隙方形环元素,配有可调节L频段传输 (1.26-1.9GHz) 的变频器二极管.
- 顶部的FSS层采用方形环交叉槽的吸收拓 (5.56-5.72 GHz),利用底层的反射和介电损失.
主要成果:
- 通过变频器调制,L频段传输窗口成功从1.26GHz调整到1.9GHz.
- 传输窗口内的插入损失保持在1.41dB以下.
- 该结构在5.56至5.72GHz频段实现了大约-30dB的峰值吸收.
结论:
- 拟议的双层FSS有效地展示了可调节传输和高吸收的频率分割控制.
- 测量结果与模拟非常一致,验证了设计的性能.
- 这种FSS为需要频率敏捷性和吸收的先进电磁应用提供了有前途的解决方案.
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