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一个同轴固态非线性脉冲形成线与一个指数渐的费里特复合核心
Travis D Crawford1, Sophia I Evers1, Bradley H Sapoff1
1School of Nuclear Engineering, Purdue University, West Lafayette, Indiana 47907, USA.
The Review of scientific instruments
|December 16, 2024
概括
这项研究开发了用于紧型高功率微波 (HPM) 系统的形非线性脉冲形成线 (NPFL). 这种新的设计显著减少了脉冲上升时间,并产生了可调节的HPM频率.
科学领域:
- 电磁学和微波工程 电磁学和微波工程
- 用于射频应用的材料科学
背景情况:
- 对大小,重量和功率 (SWaP) 的优化对于高功率微波 (HPM) 系统至关重要.
- 固态HPM源,如非线性传输线 (NLTL),比传统的真空设备提供了优势.
- 非线性脉冲形成线 (NPFL) 系统整合了脉冲形成,减少了SWaP,但给负载匹配带来了挑战.
研究的目的:
- 开发一个逐渐缩小的NPFL,解决紧型HPM系统中的负载匹配问题.
- 描述一个指数渐变的复合铁核NPFL的性能.
- 通过磁性偏差来研究HPM生成的可调性.
主要方法:
- 使用复合铁核 (60%的铁在PDMS) 与的酸外制造一个指数渐变的NPFL.
- 通过磁化曲线和铁磁共振测量对核心磁性特性进行表征.
- 在不同的充电电压和磁偏差下评估脉冲形成特征和HPM生成.
主要成果:
- 脉冲上升时间 (10%-90%) 随着充电电压的增加 (5 kV 到 15 kV) 从 ~6 ns 提高到 1.8 ns.
- 无偏向的HPM生成以~850 MHz为中心,带宽为125 MHz.
- 15和25 kA/m的磁偏差将中心频率转移到~500 MHz,增强调制深度.
结论:
- 渐变的NPFL设计有效地减少了脉冲上升时间,并提供可调节的HPM生成.
- 复合铁芯NPFL为紧,高效的HPM系统提供了可行的解决方案.
- 进一步的研究可以探索先进的材料组成和偏差配置,以提高性能.
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