應用網路理論於開口式共振腔之量測與分析

• Main Author: 黃瑞琦
• Other Authors: 劉慶
• Format: Others
• Language: zh-TW
• Published: 1997
• Online Access: http://ndltd.ncl.edu.tw/handle/05274271887715456334

碩士 === 中正理工學院 === 電子工程研究所 === 85 === 　　The open cavity is a critical component of the gyrotron. The propagation and resonance phenomena of the electromagnetic wave in the structure is based on the theory of weakly irregular waveguide to calculate the resonance frequency and the field distribution by numerical integral method. In this paper, the open cavity is viewed as a microwave two-port network. And we use the network-theory which is evolved from wave equation and WKB (Wentzel, Kramers, and Brillouin) solutions to elaborate a S-parameter analytical model of two-port network. So that the network analytical technique in conventional circuit can be apply to the gyrotron to enhance the incompleteness of the electromagnetic theory in matching and stability. In experiment, we measure the frequency response and S-parameters of the open cavity. And using quantitative-circle graphics to analyze the influence of the output gain on the input/output matching state.