本文介绍了四种宽带行波管的实测特性,为了控制螺旋线的色散,它们使用不同的线路负载量和线路负载方法。管子使用相同的电子枪、收集极和聚焦结构,所以可以直接比较线路的特性。在一大部份频率范围内具有反常色散的负载最重的线路,在超过两个倍频程以上的范围内性能良好,在通常无负载的电路内与一个倍频程的线路作了比较。描述了各种不同的线路,指出了影响选择“最佳”线路的某些因素。 This paper describes the measured characteristics of four kinds of broadband traveling wave tube, in order to control the dispersion of the spiral, they use different line load and line load method. The tube uses the same electron gun, collector and focusing structure, so you can directly compare the characteristics of the line. The most heavily loaded line with anomalous dispersion over most of the frequency range performed well over more than two octaves and was compared to an octave line in a normally unloaded circuit. Described a variety of different lines, pointed out that some of the factors that affect the selection of the “best” line.