超宽带单向伪旋转极化波导,具有双边界条件
Haddi Ahmadi1, Kazem Zafari2, Mohammad Pasdari-Kia1
1Department of Electrical Engineering, Sharif University of Technology, Tehran, 11155-4363, Iran.
Scientific reports
|February 25, 2025
概括
研究人员开发了一种新的波导,使用互补的元表面进行强大的单向波传播. 这种设计大大减少了反向散射,并使超宽带,低损耗信号传输用于先进的应用.
科学领域:
- 电磁学 电磁学 电磁学 电磁学
- 超材料科学科学 超材料科学
- 凝聚物质物理学 凝聚物质物理学
背景情况:
- 传统的波导受到反向散射和有限的带宽的影响.
- 超表面提供了新的电磁性质,但需要精确的设计来实现特定的功能.
- 控制波传播方向对于高频系统中高效的信号传输至关重要.
研究的目的:
- 引入一种具有封闭边界的新型伪回旋偏振波导.
- 为了证明强大的单向波传播与减少后向散射.
- 为下一代微波和毫米波系统设计超宽带过器.
主要方法:
- 使用具有双面阻抗的互补元表面的波导设计.
- 强化电磁二元性以实现镜像反射对称性.
- 应用严格的变量方法来计算表面阻抗.
- 开发一种使用互补的分环共振器的超宽带过器.
主要成果:
- 实现了强大的单向波传播,显著减少了反向散射.
- 已证明抑制向后传播模式,即使有结构不连续性.
- 从7-350 GHz获得了超宽的操作带宽,隔离水平超过-0.5dB.
- 设计了一种高性能超宽带过器,具有强大的止带衰减和最小的插入损失.
结论:
- 拟议的波导使低损耗,宽带和高效的单向波传播成为可能.
- 互补的超表面为先进的电磁应用提供了一个强大的平台.
- 开发的过器适用于下一代无线通信,雷达和信号处理系统.
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