As far as most of the high power microwave source is concerned , the mechanism of microwave generation is to make use of the interaction between beam electrons and microwave , during which the energy of the electron beam transfers to the microwave , and the power of the microwave is generated or amplified 大多数高功率微波源,都是利用电子束与微波相互作用,将束电子的部分能量转化为微波场的能量,使微波功率得到放大,从而使高功率微波的产生有了可能。因此电子束的发射和传输规律对微波器件的研究非常重要。
The experimental results show : the flattop phenomenon on the diode voltage pulse was very apparent for using the carbon fiber cathode , that is to say , the pulse duration of the diode voltage was widened ; moreover , under the condition of the same power of microwave , the pulse duration of the out - put microwave was prolonged by about 30 % ; the peak power of the microwave was enhanced by 3db 通过在装置上做的两种阴极的对比实验,结果显示:碳纤维阴极的使用,改善了电子束质量,使辐射微波的脉宽增加了30 %以上,辐射主瓣方向上的功率密度提高了3db以上,频谱分布较纯净,实现了微波的高效输出。
First introduces briefly the characteristic of microwave , the history of mamt , its characteristic and trends . then explains the contents of one port reflection parameters , the way to measure them and something to pay attention to . at the end we illustrates how to get the reversible two ports s matrix using eight - point method 首先概述了微波的特点,接着介绍了微波自动测量技术的发展历史、特点及其今后发展的趋势,然后说明了二端口网络反射参量的内容、测定方法、需要注意的问题以及可逆二口网络散射参量的八点法测量,重点介绍了八点法图解的方法。