两腔高功率微波振荡器研究

对一种新型两腔振荡器进行了理论和数字模拟研究.这种结构中的调制腔实现电子束速度调制，调制后的电子束在通过两腔之间一个微波场较弱的区间时实现电子束群聚，然后在换能腔实现电子能量到微波能量的转换，并通过输出结构输出.同时，调制腔和换能腔之间存在微波耦合，换能腔中的一部分微波能量可以耦合到调制腔，形成一个正反馈回路，在一定条件下实行微波振荡.设计了一个X波段的器件，理论效率为294%，25维Particle in Cell(PIC)程序模拟的效率为28%，微波频率为942GHz，微波输出功率为225GW. 关键词： 高功率微波 微波腔 模式 自洽方程

Investigation of bitron as a high power microwave oscillator

Bitron, as a new type of high-power microwave device, is studied in this paper. The parameters (such as microwave power and its efficiency) based on the theoretical analysis has been realized on 25D Particle in Cell (PIC) simulation code. This device is composed of two parts: a modulation cavity and an output cavity . Coupling exists between these two cavities, so the oscillation occurs under ce rtain conditions. X band bitron is designed in this paper, and its theoretical e fficiency is 294%. The process is also realized by 25 PIC simulation code, w ith an efficiency 28%, microwave frequency 942GHz, and the power output 2 25GW.