高功率毫米波绕射辐射振荡器高频特性研究  

Study on high-frequency characteristics of high-power millimeter-wave diffraction radiation generator

作　　者：王浩英[1] 梁正[1] 杨梓强[1] 

机构地区：[1]电子科技大学物理电子学院,四川成都610054

出　　处：《强激光与粒子束》2004年第4期489-492,共4页High Power Laser and Particle Beams

基　　金：国家自然科学基金资助课题(60178011)

摘　　要：　讨论了高功率毫米波绕射辐射振荡器的高频特性。利用线性理论和PIC模拟相结合的方法对器件的高频特性进行了比较仔细的分析。分析结果表明,合理地选择电子注的参量(电流、电压)及高频结构的尺寸(波纹深度、半径、周期等)可以获得较高的输出功率并且具有较好的频谱纯度。The high-frequency characteristics of high-power millimeter-wave diffraction radiation generator are analyzed in detail using both linear theory and PIC method. This paper presents a method of mode selection. Results show that high-power millimeter wave with good frequency spectrum purity can be obtained by reasonably adjusting the operating parameters such as the electron beam's current, voltage and the high-frequency structure's depth, radius, period. Through analyses it can be found that the device with h=0.05cm can generate single-frequency and high-power radiation of 8mm wave band. Studies indicate that diffraction radiation generator with simpler structure can also generate single-frequency and high-power radiation of millimeter-wave band.

关 键 词：绕射辐射振荡器 波纹波导 色散曲线 谐振频率 PIC模拟方法 

分 类 号：O413[理学—理论物理] TL56[理学—物理]