| 介质加载回旋行波管小信号分析 |
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| 引用本文： | 鄢然,罗勇.介质加载回旋行波管小信号分析[J].强激光与粒子束,2007,19(6):927-930. |
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| 作者姓名： | 鄢然 罗勇 |
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| 作者单位： | 电子科技大学,高能电子学研究所,成都,610054;电子科技大学,高能电子学研究所,成都,610054 |
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| 基金项目： | 国家高技术研究发展计划(863计划) |
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| 摘 要： | 应用分析回旋行波管绝对不稳定性的Briggs-Bers相碰判据与小信号色散方程，结合介质加载波导的冷场分析，数值计算并比较了不同介质加载条件下回旋行波管工作模式的起振电流与寄生模式的起振长度。改变加载介质的特性参数可以增加行波损耗从而显著提高工作模式起振电流，并抑制掉寄生模式的返波振荡。结合介质加载波导冷场分析与回旋行波管小信号色散方程，分析了介质加载条件下回旋行波管小信号增益，计算得出了不同介质加载条件下的回旋行波管的小信号增益带宽曲线。
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| 关 键 词： | 高功率微波 回旋行波管 绝对不稳定性 自激振荡 介质加载 小信号增益 |
| 文章编号： | 1001-4322（2007）06-0927-04 |
| 收稿时间： | 2006/12/20 |
| 修稿时间： | 2006-12-202007-05-17 |
Small-signal theory analysis of dielectric-loade gyro-TWT |
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| YAN Ran,LOU Yong.Small-signal theory analysis of dielectric-loade gyro-TWT[J].High Power Laser and Particle Beams,2007,19(6):927-930. |
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| Authors: | YAN Ran LOU Yong |
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| Institution: | Institute of High Energy Electronics, University of Electronic Science and Technology of China, Chengdu 610054, China |
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| Abstract: | The small-signal theory of the gyro-TWT,a pinch-point analysis based on the theory of Briggs and Bers combining the cold analysis of the dielectric-loaded waveguide are employed to analysis the threshold current of the operating mode and critical oscillation lengths of the spurious mode under different load condition.The analysis concludes that the improvement of the dielectric loss,through altering the load condition,can enhance the threshold current and critical oscillation lengths.The cold analysis of the dielectric-loaded waveguide and a smooth waveguide dispersion relation is used to analyse the small signal gain of the dielectric-loaded gyro-TWT.Through numerical calculation,the analysis gives the gain-frequency response of a dielectric-loaded gyro-TWT. |
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| Keywords: | HPM Gyro-TWT Absolute instability Self-oscillation Dielectric-loaded Small-signal gain |
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