Research on Automatic Measurement Method of Saturation Characteristics of Broadband TWT

The saturation characteristics is an important index of high power broadband traveling wave tubes. In this paper, an adaptive variable power stepping method is proposed to measure the saturation characteristics of broadband TWTs. In this method, we perform fast sweeping in the linear region and accurate sweeping in the saturation region respectively. Furthermore, the multi-level protection mechanism used in the measurement system can fully guarantee the safety and reliability of the measurement process. And this is of great significance in real measurement systems.