A Cerenkov generator with coaxial slow wave structure
A Cerenkov generator with coaxial slow wave structure
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DOI：
10.1063/1.2908185
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发表时间：
2008-05
影响因子：
3.2
通讯作者：
Guozhi Liu;R. Xiao;Changhua Chen;H. Shao;Yongmei Hu;Hongjun Wang
中科院分区：
文献类型：
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作者：
Guozhi Liu;R. Xiao;Changhua Chen;H. Shao;Yongmei Hu;Hongjun Wang
本文给出了同轴慢波结构Ceronkov发生器的解析理论、数值模拟和实验研究结果。在解析理论中给出了轴向模的色散曲线和场图，表明了准TEM模的工作模式。数值模拟结果表明，该器件具有谐振特性，微波频谱纯度高，主频率在较宽的二极管电压范围内保持恒定，最佳效率大于37%。初步实验获得了频率为7.7GHz、功率为1.3GW、效率为28%的微波脉冲。
Results of analytic theory, numerical simulation, and experimental studies on a Ceronkov generator with coaxial slow wave structure are presented. The dispersion curves and the field patterns of the axial modes are given in the analytic theory, showing the operation mode of quasi-TEM mode. The numerical simulation results indicate that the device is featured by the resonance characteristics, the microwave frequency spectrum illustrates high purity, the dominant frequency remains fairly constant over a wide range of diode voltage, and the optimized efficiency of more than 37% is obtained. In preliminary experiment, a microwave pulse with frequency of 7.7GHz, power of 1.3GW, and efficiency of 28% was obtained.