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新型滤波器加载同轴复合腔输出回路

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一种新型滤波器加载同轴复合腔输出回路

内容简介:该文介绍了一种适用于 S 波段宽带多注速调管的新型滤波器加载同轴复合腔输出回路.根据耦合谐振腔理论对该输出结构进行了理论分析并给出其等效电路;采用3维电磁场仿真软件CST-MWS进行计算模拟,研究了输出腔间隙的场分布均匀性及输出回路间隙阻抗的频率特性.研究结果表明,采用该滤波器加载同轴复合腔输出回路不仅可以极大地降低多注速调管总体对高阴极发射电流密度的要求,而且在保证多注速调管128 MHz/dB带宽的同时输出腔间隙处的轴向电场有较好的均匀性.

Abstract:@@@@This paper presents a new type of coaxial cavity loaded with a ridged cavity and a filter as the output circuit of S-band multiple-beam klystron. Theoretic analysis and equivalent circuit of the output circuit are given based on the theory of coupling resonance cavity. The uniformity of the gap field distribution in the output cavity and the gap impedance varying with frequency of output circuit are studied and simulated by means of CST-MWS simulation software. The results show that coaxial output cavity of the output circuit with coaxial compound cavity loaded with a filter not only reduces the request for the high current density emitted by the cathode, but also realizes 128 MHz/dB broad bandwidth and ensures the uniformity of the gap field distribution in the output cavity.

作者:华逢珍*, 沈斌, 张兆传, 丁耀根, 曹静, 王彩英,

关键词:S波段宽带多注速调管, 同轴复合腔, 阴极发射电流密度, 场均匀性, 间隙阻抗的频率特性

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