| 衰减材料对高增益相对论速调管自激振荡的抑制 |
| |
| 引用本文： | 吴洋,李正红,谢鸿全,成会.衰减材料对高增益相对论速调管自激振荡的抑制[J].强激光与粒子束,2014,26(6):063043. |
| |
| 作者姓名： | 吴洋 李正红 谢鸿全 成会 |
| |
| 作者单位： | 1.中国工程物理研究院 应用电子学研究所, 四川 绵阳 621 900; |
| |
| 基金项目： | 国家自然科学基金项目（61271109） |
| |
| 摘 要： | 在高增益相对论速调管放大器中,自激振荡严重影响器件的正常工作并导致脉冲缩短。通过粒子模拟研究了高次模式自激振荡的激励机制,并提出在器件内加入微波衰减材料来抑制该类自激振荡。详细研究了衰减材料的电导率和几何参数与高次模式衰减常数的关系,并开展了微波衰减体的冷测实验。冷测表明微波衰减体对高次模式的衰减达11.25 dB,其性能满足器件实验要求,可以用于高增益相对论速调管的热腔实验。
|
| 关 键 词： | 相对论速调管放大器 高增益 自激振荡 微波衰减材料 |
| 收稿时间： | 2013/11/15 |
Suppression of self-oscillation in high gain relativistic klystron amplifier by RF lossy material |
| |
| Affiliation: | 1.Institute of Applied Electronics,CAEP,P.O.Box 919-1015,Mianyang 621900,China;2.Science and Technology on High Power Microwave Laboratory,Mianyang 621900,China;3.College of Science,Southwestern University of Science and Technology,Mianyang 621010,China |
| |
| Abstract: | In the high gain relativistic klystron amplifier, higher mode self-oscillation seriously degrades klystron performance and causes pulse shortening. The mechanism of higher mode excitation is explored in the PIC simulation, and RF lossy material is introduced to suppress higher mode self-oscillation. The relations of the attenuation characteristics with thickness, electric conductivity and length of the lossy material are studied. The cold test of the lossy material is performed. The attenuation of the lossy material is about 11.25 dB which fulfills the requirement of the suppression of self-oscillation, and can be used in the high gain relativistic klystron amplifier. |
| |
| Keywords: | relativistic klystron amplifier high gain self-oscillation RF lossy material |
| 本文献已被 CNKI 等数据库收录！ |
| 点击此处可从《强激光与粒子束》浏览原始摘要信息 |
|
点击此处可从《强激光与粒子束》下载全文 |
|
