一种长阳极磁控管谐振系统的计算机模拟研究

Design and Simulation of a Long-Anode Magnetron Resonant System

高功率连续波磁控管在工业加热等方面有着广泛的应用，长阳极磁控管以其大的热容量及长的互作用区可以得到较大功率的输出．本文试图研究和设计一种针对2450MHz的连续波输出的长阳极磁控管谐振系统，对有输出耦合圆盘和不同隔模方式的频率色散特性和模式分隔进行了计算和比较，对场型分布图的分析发现了普通磁控管中所没有的高阶轴向模式，最后通过适当的隔模带方法得到可满足π模振荡要求的模式分隔．

High power CW magnetrons can be used widely in industrial heating and other aspects, and long-anode magnetrons could reach higher power because of their larger thermal capacitance and longer interaction distance than convntionalmagnetrons. In this paper, a preliminary design of a long-anode resonator for 2450 me operation was given and its charcteristics including mode dispersion and characteristic impedance etc. for different arrangement of output structure and straps werecalculated using MAFIA package. Higher axial modes,which do not exist in ordinary magnetrons were found by the study ofthe field patterns. At last, a good mode separation has been obtained for π-mode oscillation by prope straps arrangements.