Gyrotron Traveling Wave Tube Amplifier With The Helical Wave Guide

Gyrotron traveling wave tube amplifier (Gyro-TWT) is an important millimeter wave amplifier with the characteristics of the high output power, the broadband width, and so on. This amplifier has vast a:lication vistas in many areas such as millimeter radar, communications, electronic countermeasure, and so forth. During the development of gyro-TWT, people have being paid much attention to enhance the power and efficiency of gyro-TWT, and increase bandwidth for su:ression of spurious oscillations, and reduce sensitivity to the spread of electron-beam and so on.. So, kinds of high frequency wave-guides come forth. Some employ the tapered wave-guide with gradual change magnetic field, and Zhu guorui employs interaction structure with severed and distributed wall losses and University of Electronic science and Technology of China employs interaction slotted structure. These have obtained better effect. During these research, one kind of wave-guide with helical corrugation is more ideal than others, and this kind structure is put by the Russian, G . Denisov and others. This structure made efficient interaction between the beam and operating mode by altering the guide dispersion characteristics and improve gyro-TWT work characteristic. The wave-guide with helical corrugation which changes radius on axial and azimuthal only can find the results in correlative literature, and dispersion characteristics are referred to simplify. Except of these, systemic theory research is seldom seen. Under this background, many problems about Gyro-TWT are addressed thoroughly and intensively in this dissertation su:orted by the pre-study item, and "863 Plan" .The designing criterion and the calculation program about a kind of stability and high efficiency Gyro-TWT are presented .The main works of this dissertation are listed as following:1. The basic operation process of the wave-guide with helical corrugation is...