引言在1943年11月1日,R.康普夫纳博士用实验说明了第一个行波管放大器。他相当直观地选择了一个螺旋线射频(RF)慢波电路,当时对该电路的电磁场结构还没有完全了解清楚,对慢波线内是否有足够的场与电子束互相作用也存在分歧。当时康普夫纳博士所说的慢波电路的增益只有几个分贝(同时观察了第一个行波管 INTRODUCTION On November 1, 1943, Dr. R. Vypfner experimentally demonstrated the first traveling wave tube amplifier. He quite intuitively chose a helical radio frequency (RF) slow-wave circuit, at the time of the electromagnetic field structure of the circuit is not fully understood, there is a disagreement on whether there is enough field in the slow-wave line to interact with the electron beam. At that time, Dr. Wupffner said the gain of the slow-wave circuit was only a few decibels (while observing the first traveling-wave tube