Enhanced Scheme On The Adaptability Of Space In S-band Pluse Traveling-Wave Tubes

Space traveling-wave tubes (TWT) are key components in space application system used as RF power amplifier. Due to the extremely rigorous operation condition, adaptability of Space is always hot topics in space TWT. In this dissertation, a series of researches have been done in order to increase the Adaptability of Space in S-band pulse TWT. Several important and valuable results are achieved and listed as follows:1. The thermal performance of S-band pulse traveling wave tube multistage depressed collector was simulated using the finite element method, attaining the temperature distribution of the multistage depressed collector. The influences of contact resistance on the thermal performance were analyzed. Improved heat conduction for S-band pulse traveling wave tube is proposed by using ANSYS software had made, long time steadily working in space environment ion are Realized.2. Some factors that affect multipactor’s threshold are analyzed. And a general step and method of designing on multipactor components are discussed. Then the measures to be taken in structure and technology are considered for avoiding and eliminating micro-discharge phenomena.The analyzation of Multipactor and the technology resolution aiming at the problem of fluctuant temperature and radiation in out space.; The TWT can work in order with peak output Power being higher than3000W when temperature fluctuant is-55℃～+70℃, It will provide useful help to improve the output power of space TWT and expand application in Satellites in this research.