梯形结构高功率扩展互作用速调管
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中国科学院电子学研究所,北京航空航天大学,电子信息工程学院,中国科学院电子学研究所,中国科学院高功率微波源与技术重点实验室,中国科学院电子学研究所,中国科学院高功率微波源与技术重点实验室

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国家自然科学基金项目(面上项目,重点项目,重大项目)


High-power extended-interaction klystron with ladder-type structure
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Institute of Electronics, Chinese Academy of Sciences,School of Electronics and Information Engineering, BeiHang University,Key Laboratory of High Power Microwave Sources and Technologies, Institute of Electronics, Chinese Academy of Sciences,Key Laboratory of High Power Microwave Sources and Technologies, Institute of Electronics, Chinese Academy of Sciences

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    摘要:

    对平面梯形结构多间隙谐振腔的模式分布、特性阻抗、耦合系数以及工作稳定性进行了研究.在此基础上给出了W波段高峰值功率扩展互作用速调管高频互作用系统设计, 并采用三维粒子模拟(PIC)技术对电子的速度调制、群聚及其与高频场的相互作用和能量转换等物理过程进行了研究, 定量给出了放大器的功率、带宽、效率以及增益等关键技术指标.PIC结果显示: 在中心频率94.52GHz以及电压16kV、电流0.6A的电子注参数下, 最大输出功率达到1.8kW, 相应的增益和电子效率分别为47.7dB和19.4%; 扫频结果显示瞬时3dB带宽为210MHz.

    Abstract:

    The characteristics of the planar ladder-type multi-gap resonant cavity are investigated, including the mode distribution, characteristic impedance (R/Q), coupling coefficient and the operating stability. The high-frequency interaction system for a W-band high-power extended interaction klystron was designed. The nonlinear performances such as the saturated power, gain, efficiency, as well as bandwidth are predicted by using the three-dimension Particle-in-Cell technology. The modulation and bunching of the beam and the physics of the interaction between the beam and the multi-gap resonant cavity were explored. PIC simulation results show that the output power is up to 1.8kW at the frequency of 94.52GHz with the voltage of 16 kV and beam current of 0.6 A. This power corresponds to a gain of 47.7dB and an efficiency of 19.4% respectively. The sweep-frequency simulations with the same drive power show that the 3-dB bandwidth of 210MHz can be achieved.

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张长青,阮存军,王树忠,杨修东.梯形结构高功率扩展互作用速调管[J].红外与毫米波学报,2015,34(3):307~313]. ZHANG Chang-Qing, RUAN Cun-Jun, WANG Shu-Zhong, YANG Xiu-Dong. High-power extended-interaction klystron with ladder-type structure[J]. J. Infrared Millim. Waves,2015,34(3):307~313.]

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  • 收稿日期:2014-03-12
  • 最后修改日期:2014-06-11
  • 录用日期:2014-06-12
  • 在线发布日期: 2015-09-28
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