摘要
通过对一种磁控管及其输出窗的冷热测参数分析和采用CST软件对输出窗频率特性的模拟仿真,证明了输出窗传输特性不良是造成磁控管频带内功率波动大和峰值功率大时某些频点上波导叫的主要原因。而陶瓷窗片介电常数变化超出设计允许变化,则是输出窗组件批生产性能失控的主要原因。通过对输出窗组件结构优化,多种结构改进的输出窗组件实际试样对比,兼顾良品率和可靠性,最终确定了一种合理的输出窗结构。该结构输出窗组件频带内的驻波和频率特性对陶瓷窗片介电常数变化不敏感,保证了该管批生产时性能的一致性和能量输出的高效性,解决了磁控管热测带内功率波动大和波导叫难题,实现了该管的批量稳定生产。
On the analysis of testing parameters and the simulation of frequency characters of the magnetron microwave windows by using CST software,it is proved that the poor transmission of microwave windows mainly induces the large fluctuations of the output powers and the whistles from the windows at some frequency at a large peak power,and the excessive permittivity change of the ceramic windows leads to batch production failure.Considering the reliability and passed yield rate,optimization and comparison were made and a reasonable microwave window structure was determined.The band standing wave characteristic and the frequency characteristic of designed ceramic window structure is insensitive to the permittivity change,which ensures the batch production consistency and the high efficiency energy output,avoids over fluctuation of the output power and whistle from the window,realizes the stable batch production.
出处
《真空电子技术》
2015年第5期30-35,共6页
Vacuum Electronics
关键词
磁控管
输出窗
功率波动
波导叫
介电常数
模拟仿真
优化
传输特性
Magnetron,Microwave window,Fluctuations of powers,Whistles from windows,Permittivity,Simulations,Optimization,Transmission characteristics
