一个双带通频率选择性吸收器,具有广角斜冲击
Yong-Xing Che1,2, Qiang Sun3, Xue-Mei Du2
1School of Electronic Science and Engineering, University of Electronic Science and Technology of China, Chengdu 611730, China.
Materials (Basel, Switzerland)
|February 13, 2025
概括
这项研究引入了一种具有双通带的新型频率选择性吸收器 (FSA). 先进的FSA设计实现了广角微波吸收和选择性传输,非常适合先进的电磁应用.
科学领域:
- 电磁超材料 电磁超材料
- 应用电磁学 应用电磁学
- 微波工程 微波工程
背景情况:
- 频率选择面 (FSS) 和电路模拟 (CA) 吸收器对于电磁波控制至关重要.
- 现有的设计往往在宽角性能和双带功能同时扎.
- 在雷多姆和EMI抑制等应用中,对先进吸收器的需求正在增长.
研究的目的:
- 提出并展示一种具有双通带的新型频率选择式吸收器 (FSA).
- 为了实现广角吸收和传输特性,以提高电磁性能.
- 通过模拟和实验制造来验证设计.
主要方法:
- 设计一个组合电路模拟 (CA) 板和双带宽频率选择面 (FSS) 板的单元电池.
- 采用三极元件载有短路传输线和AC板的断片电阻.
- 用泡间隔器将板材嵌入介电板上.
- 模拟和实验验证在斜率下吸收和传输特征.
主要成果:
- FSA显示微波吸收 (反射率<-10 dB) 从2.6GHz到9.2GHz之间.
- 该结构显示传输 (传输率> -3 dB) 在两个不同的频段:12.2-15.1 GHz和30.6-31.5 GHz.
- 对于TE和TM两极化,都实现了高达60°的稳定传输和高达45°斜率的吸收.
- 实验结果与模拟预测非常相匹配.
结论:
- 拟议的FSA设计成功地整合了广角吸收和双频传输.
- 该设计显示了需要双频低散射雷达和多向EMI抑制的应用的巨大潜力.
- 制造和测试的FSA证实了拟议设计对于实际电磁应用的可行性.
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