设计和分析具有超宽带和极化不敏感的多层电路吸收器
Mahdi Ghafourivayghan1, Sergey Shabunin2
1Department of Radio Electronics and Telecommunications, Ural Federal University, Yekaterinburg, Russia. mgafurivaigan@urfu.ru.
Scientific reports
|October 1, 2025
概括
这项研究介绍了一种使用电阻频率选择性表面的超宽带吸收器. 它实现了超过117%的分数带宽,用于跨多个频段的电磁波吸收.
科学领域:
- 电磁兼容性 电磁兼容性
- 超材料和纳米光子学
- 微波工程 微波工程
背景情况:
- 电磁吸收器对于减少各种应用中不必要的信号反射至关重要.
- 在保持极化不敏感的同时实现超宽带吸收仍然是一个重大挑战.
- 频率选择性表面 (FSS) 为设计紧且高效的吸收器提供了一个有前途的平台.
研究的目的:
- 设计和模拟一种新的超宽带,极化不敏感电路模拟吸收器.
- 为了研究电磁吸收的多层电阻频率选择性表面结构的性能.
- 分析关键结构参数对吸收器带宽和性能的影响.
主要方法:
- 拟议的吸收器采用一系列周期性的正方形循环,在介电层上加固电阻和空气间隔器.
- 使用CST微波工作室进行全波电磁模拟,以分析吸收器的性能.
- 进行了参数研究,以评估电阻值和空隙高度对吸收带宽的影响.
主要成果:
- 模拟吸收器显示反射系数低于-10dB,从5.2GHz到20.09GHz,在正常发生时达到117.75%的分数带宽.
- 吸收器有效地覆盖了C,X,Ku和K频段.
- 该设计具有极化不敏感的特性,对于实际应用至关重要.
结论:
- 提出的电路模拟吸收器设计为超宽带电磁波吸收提供了一个高度有效的解决方案.
- 多层电阻式FSS结构为电磁吸收提供了一个强大且可调节的平台.
- 这些发现验证了该设计对于需要宽带信号减弱和电磁兼容性的应用的潜力.
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