| 高增益相对论速调管放大器自激振荡的分析与抑制 |
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| 引用本文： | 吴洋,谢鸿全,李正红,张运俭,马乔生,成会.高增益相对论速调管放大器自激振荡的分析与抑制[J].强激光与粒子束,2014,26(3):033001-157. |
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| 作者姓名： | 吴洋 谢鸿全 李正红 张运俭 马乔生 成会 |
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| 作者单位： | 1.中国工程物理研究院 应用电子研究所, 四川 绵阳 621 900; |
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| 基金项目： | 国家自然科学基金项目(61271109) |
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| 摘 要： | 通过二维和三维粒子模拟研究了高增益相对论速调管放大器中高次模式的激励机理,两者结果的一致性排除了高次非对称模式激励的影响。由此建立了高次模式起振的理论模型,给出了高次模式的起振电流。并通过在器件内加入微波衰减材料来抑制高次模式自激振荡,模拟获得了1.95GW的微波输出,增益62.8dB。
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| 关 键 词： | 相对论速调管放大器 高增益 高次模式 自激振荡 |
| 收稿时间： | 2013/9/8 |
Analysis and suppression of self-oscillation in high gain relativistic klystron amplifier |
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| Institution: | 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 |
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| Abstract: | The mechanism of high order mode excitation in high gain relativistic klystron amplifier is explored in the 2D and 3D PIC simulations. The impact of the asymmetric mode excitation is excluded as the 2D simulation result is in accord with the 3D simulation. The formula for startup current of high order mode excitation is developed based on theoretical model. And RF lossy material is introduced to suppress high order mode self-oscillation. Mode control is realized in the simulation with the RF output power of 1.95 GW, and the corresponding gain is 62.8 dB. |
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| Keywords: | relativistic klystron amplifier high gain high order mode self-oscillation |
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