运用螺旋腔振荡器提高相对论磁控管的整体效率

Using Spiral Cavity Oscillator to Improve the Overall Efficiency of RM

相对论磁控管(RM)的工作电流较大的时候,工作电流所产生的角向磁场将对电子产生一个轴向的漂移力,使得电子在产生高功率微波之前就漂移出谐振腔,导致RM的整体效率下降.本文研究了螺旋腔高频结构的特性,提出一种提高RM整体工作效率的新方法:适当地选择螺旋方式和磁场的组合,从而有效地抑制电子的轴向溢出、减小漏电流,提高RM的整体工作效率.

Large current, under which a relativistic magnetron is operated, results in an azimuthal magnetic field which gives the electrons a force and make electrons escape from the interaction space before energy of the electrons is converted to rf energy sufficiently. That will substantially reduce efficiency. In this paper, we study the attributes of ＂helix cavity＂, and based on the attributes of ＂helix cavity＂, we can conclude that if we choose the method of twisting and direction of uniform, applied magnetic field （Bz） appropriately, we can counteract tendency of escaping so as to enhance the overall efficiency.