磁控管中辅助热阴极式冷阴极技术研究  

Development of Cold Secondary-Emission Cathode with Auxiliary Thermionic Cathode in Magnetron

作　　者：黎深根[1] 李凤玲[1] 雷雪峰[1] 张福 LI Shen-gen;LI Feng-ling;LEI Xue-feng;ZHANG Fu(The\2th Research Institute of China Electronics Technology Group Corporation,Beijing 100015,China)

机构地区：[1]中国电子科技集团公司第十二研究所,北京100015

出　　处：《微波学报》2020年第5期61-65,共5页Journal of Microwaves

摘　　要：冷阴极技术是磁控管的重要发展方向,辅助热阴极式冷阴极技术在短毫米波和太赫兹磁控管中应用,可以突破阴极尺寸的限制,突破阴极发射能力的瓶颈,延长阴极使用寿命。文中对辅助热阴极式冷阴极的基本原理进行了理论分析,采用PIC软件分析了不同工作条件下电子相位的分布情况,在此基础上开展了W波段辅助热阴极式冷阴极磁控管试验研究,在磁场0.72 T、电压14.6 kV条件下,磁控管输出功率340 W,工作频率95.913 GHz,磁控管能正常起振。Cold cathode technique is a significant development direction in magnetron.The application of cold secondary-emission cathode firing by auxiliary thermionic cathode in short-millimeter and THz magnetron could break the limit of cathode geometry dimension,increase the emission ability and prolong the lifetime of magnetron.In this paper,the operation principle of auxiliary thermionic cathode is theoretically analyzed and the electron phase space under different conditions is simulated with PIC code.Based on theory and simulation,a W-band cold secondary-emission cathode magnetron with auxiliary thermionic cathode is fabricated and the experimental results show that the tube could startup successfully and the output power is 340 W at 95.913 GHz when the voltage is 14.6 kV and the magnetic field is 0.72 T.

关 键 词：短毫米波 磁控管 冷阴极 辅助热阴极 

分 类 号：TN123[电子电信—物理电子学]