一种改进型C波段磁绝缘线振荡器的数值模拟研究
Research of an improved C-band MILO
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摘要: 提出了一种改进型C波段磁绝缘线振荡器，并对其进行了优化设计。首先根据磁绝缘原理对慢波结构进行了理论分析，并选择了磁绝缘线振荡器阴极半径和主慢波结构的基本参数，然后用2.5维全电磁PIC方法研究了输出功率与其它参数之间的关系。模拟表明，优化结构可以在输入约21GW电功率（工作电压约500kV）的条件下，得到频率3.91GHz、平均功率2.71GW的微波输出，其饱和时间为10ns，平均效率为12.9%。Abstract: A type of improved C-band MILO is brought forward and its optimized model is designed through theoretic analysis and numerical simulations. According to theoretical analysis of the slow-wave structure (SWS) using the magnetically insulation principle, the cathode radius and primary SWS parameters of C-band MILO are chosen. Through numerical simulations by a 2.5-D PIC code, the impacts of several structure parameters of MILO on its output power are investigated. With 21GW(at 500kV) input-power, a 3.91GHz, 2.77GW average output power microwave is generated from the optimized MILO by simulation. The saturation time is 10ns. The average efficiency is over 13%．
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Key words:
- high-power microwave source /
- milo /
- pic simulation
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