无隔模带磁控管谐振系统的理论分析与仿真  

Theoretical Analysis and Simulation of the Unstrapped Magnetron's Resonant System

作　　者：岳松[1,2] 张兆传[1] 高冬平[1] 

机构地区：[1]中国科学院电子学研究所,北京100190 [2]中国科学院大学,北京100049

出　　处：《电子与信息学报》2014年第9期2272-2277,共6页Journal of Electronics & Information Technology

基　　金：国家973计划项目(2013CB32890);国家自然科学基金(11305177)资助课题

摘　　要：为了提高磁控管稳定性,需要研究各耦合因素对磁控管谐振频率及模式分隔度的影响。该文采用等效电路的方法,给出了无隔模带磁控管在电容、电感耦合下的谐振频率及模式分隔度的表达式,并分析谐振频率随模数的变化趋势及电感、电容耦合强弱对模式分隔度的影响。采用CST-MWS软件对不同阴极半径及顶盖高度的谐振系统的谐振频率进行仿真,并将仿真结果与理论结果进行对比。理论分析与计算机仿真表明,对于无隔模带磁控管谐振系统,电容耦合使谐振频率随模数的增大而增大,电感耦合使谐振频率随模数的增大而减小;两者分别通过增大和降低p模频率从而增大模式分隔度,两者共同作用时模谱图取决于占主导地位的耦合因素。The effects of various coupling factors on resonant frequency and mode separation of magnetrons should be investigated to improve the stability of the magnetrons. The resonant frequency and the mode separation of the unstrapped magnetron with capacitance and inductance coupling are derived using equivalent circuit method. Besides, the change of resonant frequency and the effects of capacitance and inductance coupling on mode separation are also numerically calculated. Moreover, the resonant frequencies of magnetrons are simulated by CST-MWS, which are compared with theoretical results. Theoretical analysis and computer simulations show that as the mode number increases, the resonant frequency of unstrapped magnetron induced by the capacitance coupling increases, while the inductance coupling is opposite. The two couplings can both enlarge the mode separation by opposite methods. The mode spectrum of unstrapped magnetron with capacitance and inductance coupling depends on the dominant couDling factor.

关 键 词：磁控管 电感耦合 电容耦合 谐振频率 模式分隔度 

分 类 号：TN123[电子电信—物理电子学]