论文部分内容阅读
应用Pierce小信号理论,对设计高效率宽带行波管的一般方法进行分析,采用螺距跳变渐变技术,形成了相速减少和相速增加两段结合的输出段作为宽带行波管的慢波结构,并采用散热性能好的半金属化夹持杆慢波结构产生反常色散曲线。为了提高行波管工作频带的电子效率,在高频点(18 GHz),利用遗传算法并调用1维BWIS互作用程序,对相速减少和相速增加两段相结合输出段的慢波结构进行了优化。计算结果表明:行波管在工作频带(6~18 GHz)获得了比较平坦的饱和输出功率,为下一步实际研制宽带行波管提供了理论依据。
The Pierce small signal theory is used to analyze the general method of designing a high efficiency wideband traveling wave tube. By adopting the pitch hopping gradual change technique, an output segment with a combination of phase velocity reduction and phase velocity increase is formed as a slow wave Structure, and the use of semi-metallic clamping rod with good thermal performance of the slow-wave structure to generate anomalous dispersion curve. In order to improve the electronic efficiency of TWT’s working frequency band, a genetic algorithm and a one-dimensional BWIS interaction program are used at high frequency (18 GHz) Optimized. The calculation results show that the traveling wave tube obtains relatively flat saturated output power in the working frequency band (6 ~ 18 GHz), which provides a theoretical basis for the next practical development of broadband traveling wave tube.