Experimental investigation of L-band relativistic magnetron at long-term steady operation
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摘要: 以实现GW级高功率微波源长时间稳定运行为目标，利用应用电子学研究所小型化Marx型脉冲功率源平台开展了L波段六腔衍射输出相对论磁控管长时间稳定运行实验研究。首先介绍了L波段六腔衍射输出相对论磁控管基本结构及长时间稳定运行实验装置基本情况，接着给出了测试系统布局及各参数测试方法，最后给出了实验研究结果：所研制的L波段衍射输出相对论磁控管在输出功率大于1 GW、重复频率10 Hz的条件下实现了超过55 min的长时间稳定运行，输出微波模式稳定，无竞争模式出现，中心频率为1.57 GHz。Abstract: To achieve long-term steady operation of high power microwave source, relativistic magnetron (RM) with diffraction output has been investigated for long-term operation. Experimental investigation was carried out based on an L-band relativistic magnetron with diffraction output. This paper introduces the structure of L-band RM with diffraction output as well as experimental setup and presents test method for the parameters. Operation time longer than 55 min has been obtained with output power of more than 1 GW and rep-rate of 10 Hz. The frequency is 1.57 GHz. The tube works steadily in the long-term operation and no mode competition has been observed.
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图 1 L波段衍射输出相对论磁控管结构示意图
Figure 1. Schematic of L-band relativistic magnetron with diffraction output
Note：1-cathode, 2-anode, 3-diffraction output structure
图 5 实验测得电压、电流、辐射微波波形及对应频谱
Figure 5. Detected waveform of voltage, current, microwave and corresponding spectrum in experiment
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