.3 Mm The Trapezoidal Slow-wave System Eio Study

The ladder slow-wave structure is an important slow-wave system, which is used in resonator of extended interaction oscillator. The Ladder slow-wave structure is kind of coupled cavity slow-wave systems, compared with the traditional coupled cavity slow wave systems, The Ladder slow-wave system need small number of parts and has advantage of simple structure, and it has good consistency and integrity in particular. The ladder slow-wave structure is easy to process and ensure accuracy, thereby production costs can be reduced. Because of large size, The ladder slow-wave has good cooling performance and high power capacity.In this thesis, the ladder slow-wave structure of interaction oscillator has been analyzed. Then novel materials and process are explored and investigated for non-reducible dielectrics. The main research and results for ladder slow wave structure are as follows:1. The dispersion characteristic of ladder slow wave structure is investigated in detail. This paper has solved the dispersion characteristic of the slow wave structure. The effects of various size parameters on the dispersion characteristic has been researched in this thesis, and the conclusion is universal.2. A simple calculation method of coupled impedance using the CST software is refered first time, and the curve of coupled impedance on frequency can be obtained one time using the method. This method can save a lot of time for reference, and the coupled impedance of the ladder slow-wave structure has been calculated by the method. The effects of various size parameters on the coupled impedance are researched in this thesis, and the conclusion has been listed.3. The S₁₁ parameter of resonator has been simulated using CST Software, and the simulation results can meet the requirements, and the coupled impedance at the oscillation frequency point can meet the requirements. The effect factors on the S₁₁ parameter are researched in this thesis, and the conclusion has been listed.4. Then, the beam-wave interaction has been simulated, and the simulation results show that the beam-wave interaction effect is good. The effects of gap number and beam voltage on the interaction are researched, and the conclusion has been listed.