·高功率微波技术·S波段低磁场紧凑型相对论磁控管设计*张伟1,2,徐莎1,秦奋1,雷禄容1,王冬1,张勇1,鞠炳全1,崔越1,2(1.中国工程物理研究院应用电子学研究所高功率微波技术重点实验室,四川绵阳621900;2.中国工程物理研究院研究生院,四川绵阳621999)摘要:针对高功率微波器件的低磁场小型化发展需求,设计了工作在S波段的低磁场紧凑型相对论磁控管,建立了三维仿真模型。设计衍射输出结构,输出模式为TE11模。在圆波导中TE11模具有最小的截止半径,因此选取TE11模输出比高阶模输出具有更小的波导半径。分析了磁控管的输出性能随磁场、输出波导半径和倾斜角的变化规律。在磁场0.34T、电压352kV条件下,模拟仿真结果显示磁控管输出功率达到567MW,功率转换效率为62.5%,在频率为2.37GHz时波导半径仅为77.5mm。关键词:磁控管;S波段;轴向衍射输出;TE11模式;粒子模拟中图分类号:TN125文献标志码:Adoi:10.11884/HPLPB202335.230058DesignofacompactS-bandrelativisticmagnetronoperatingatlowmagneticfieldZhangWei1,2,XuSha1,QinFen1,LeiLurong1,WangDong1,ZhangYong1,JuBingquan1,CuiYue1,2(1.KeyLaboratoryonHighPowerMicrowaveTechnology,InstituteofAppliedElectronics,CAEP,Mianyang621900,China;2.GraduateSchoolofChinaAcademyofEngineeringPhysics,Mianyang621999,China)Abstract:Forcompacthigh-powermicrowavedevicesoperatingatlowmagneticfield,acompactS-bandrelativisticmagnetronoperatingatlowmagneticfieldwasdesignedandsimulatedwiththree-dimensionalparticle-in-cellcodes.ThistuberadiatesTE11modeincircularwaveguidewithdiffractionoutputstructure.AsthecutoffradiusofTE11modeisthesmallestincircularwaveguide,comparedwithhighermodes,theradiusoftheoutputwaveguidecouldbereducedobviously.Theoutputperformanceasafunctionofmagneticfield,radiusofwaveguideandanglewasstudied.Typicalsimulationresultsshowthatmicrowavepowerof567MWwasgeneratedat2.37GHzwhenthevoltageandmagneticfieldwere352kVand0.34T,thepowerconversionefficiencywas62.5%,andtheradiusofwaveguidewasonly77.5mm.Keywords:magnetron,S-band,axialdiffractionoutput,TE11mode,PICsimulation随着对高功率微波器件的不断深入研究,具有结构紧凑、可便携、高功率、高可靠和高效率等特点的微波器件越来越受到重视。在所...