一种具有双输出端口的200-kW Ka波段速调管的集成互作用电路设计  

Design of the integrated interaction circuits for a 200-kW Ka-band klystron with two output ports

作　　者：毕亮杰 蒋欣宇 李海龙[1] 王彬[1] 蒙林[1] 殷勇[1] BI Liang-Jie;JIANG Xin-Yu;LI Hai-Long;WANG Bin;MENG Lin;YIN Yong(School of Electronic Science and Engineering,University of Electronic Science and Technology of China,Chengdu 610054,China)

机构地区：[1]电子科技大学电子科学与工程学院,四川成都610054

出　　处：《红外与毫米波学报》2023年第6期772-779,共8页Journal of Infrared and Millimeter Waves

基　　金：Supported by the Natural Science Foundation of Sichuan Province(2023NSFSC1376)。

摘　　要：文章提出了一种基于集成互作用单元的高效谐振电路,以改善注波互作用,将Ka波段速调管的峰值功率提高到200 kW。被集成的单元电路设计是基于矩形间隙波导中级联的场结构,通过特定边界条件的融合,将两个或多个单注-波互作用单元横向连接在一起(每个单元通常用于传统的单注速调管)。针对输入腔,通过优化注加载参数和腔体参数将两个互作用单元有效地整合在一起,以获得~35 GHz恒定输入功率下的最佳吸收效率。输出腔1)设计有两个输出端口,以平衡功率提取对集成互作用电路的影响;2)通过优化两个预调制的电子束得到200-kW的峰值功率。在注电压为45 kV、单个注电流为5.6 A的条件下,通过粒子模拟(PIC),所设计的Ka波段速调管的整体互作用电路能够产生202.9-kW的峰值功率,效率为40.2%,增益最大达到47 dB。In this paper,an efficient resonant circuit based on integrated interaction units is proposed to improve the beam-wave interaction for increasing the peak power of a Ka-band klystron to 200 kW.The integrated-unit cir⁃cuit is designed with connecting two or several single-beam-wave interaction units across the cross section(each of which is typically used in a conventional single-beam klystron)based on the cascaded field structure in the rect⁃angular gap waveguide with specific fusion boundary conditions.For the input cavity,two interaction units have been efficiently integrated to obtain the optimal absorption efficiency with the constant input power at~35 GHz,through optimizing both the beam-loading parameters and cavity parameters.The output cavity has been 1)de⁃signed with two output ports for balancing the effect of the power extraction on the integrated circuit,and 2)opti⁃mized to deliver 200-kW peak power through injecting two pre-modulated beams.The overall interaction circuit of a Ka-band klystron is accordingly designed to produce the peak power of 202.9-kW with the efficiency of 40.2%and the maximum gain of 47 dB using particle-in-cell(PIC)simulations,when the two beams with the voltage of 45 kV and every current of 5.6 A are used to drive the klystron.

关 键 词：速调管 分布式电子束 集成互作用单元 高功率毫米波源 真空电子学 

分 类 号：TN122[电子电信—物理电子学]