梯形结构高功率扩展互作用速调管
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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94.52 GHz以及电压16 k V、电流0.6 A的电子注参数下,最大输出功率达到1.8 k W,相应的增益和电子效率分别为47.7 d B和19.4%;扫频结果显示瞬时3 d B带宽为210 MHz.
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 multigap resonant cavity were explored. PIC simulation results showthat the output power is up to 1. 8 k W at the frequency of94. 52 GHz with the voltage of 16 k V and beam current of 0. 6 A. This power corresponds to a gain of 47. 7 d B and an efficiency of 19. 4% respectively. The sweep-frequency simulations with the same drive power showthat the 3-d B bandwidth of 210 M Hz can be achieved.
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 multigap resonant cavity were explored. PIC simulation results showthat the output power is up to 1. 8 k W at the frequency of94. 52 GHz with the voltage of 16 k V and beam current of 0. 6 A. This power corresponds to a gain of 47. 7 d B and an efficiency of 19. 4% respectively. The sweep-frequency simulations with the same drive power showthat the 3-d B bandwidth of 210 M Hz can be achieved.
引文
[1]Chodorow M,Wessel-Berg T.A high-efficiency klystron with distributed interaction[J].IRE Transactions on Electron Devices,1961,8(1):44-55.
[2]Chodorow M,Kulke B.An extended-interaction klystron:efficiency and bandwidth[J].IEEE Transactions on Electron Devices,1966,13(4):439.
[3]Richard D,Mark H,Brian S,et al.Rugged and efficient Ka-band extended interaction klystrons for satellite communication systems[C].IEEE International Vacuum Electronics Conference(IVEC),Kitakyushu,Japan,2007:141-142.
[4]Roitman A,Berry D,Steer B.State-of-the-art W-band extended interaction klystron for the CloudS at program[J].IEEE Transactions on Electron Devices,2005,52(5):895-898.
[5]David C,Alex B,Igor C,et al.Extended interaction klystrons for terahertz power amplifiers[C].IEEE International Vacuum Electronics Conference(IVEC),Monterey,CA,2010:217-218.
[6]Shin Y M,Park G S,Scheltrum G P,et al.Circuit analysis of an extend-interaction klystron[J].Journal of the Korean Physical Society,2004,44(5):1239-1245.
[7]WANG Shu-Zhong,MA Jing,WANG Yong,et al.Design on Ka-band filter loaded three-gap coupled output cavity[J].J.Infrared Millim.Waves(王树忠,马菁,王勇,等.Ka波段滤波器加载三间隙耦合输出腔的设计.红外与毫米波学报),2010,29(2):105-108.
[8]Gilmour A S.Klystron,traveling-wave tubes,magnetrons,crossed-field amplifiers,and gyrotrons[M].丁耀根,张兆传,等译.北京:国防工业出版社,2012:p207.
[9]XING Jun-yi,FENG Jin-jun.Millimeter wave extended interaction device[J].Vacuum Electronic(邢俊毅,冯进军.毫米波扩展互作用器件.真空电子技术),2010,02:33-37.
[10]SHENG Xing,WEI Ying,SUN Fu-Jiang,et al.Ka-band extended-interaction klystron design[J].Vacuum Electronic(盛兴,韦莹,孙福江,等.Ka波段分布作用速调管技术.真空电子技术),2012,02:19-24.
[11]RUAN Cun-Jun,WANG Shu-Zhong,HAN Yin,et al.The electron optics system and beam-wave interaction for novel W-band sheet beam klystron[J].J.Infrared Millim.Waves(阮存军,王树忠,韩莹,等.W波段带状注速调管电子光学及注波互作用系统.红外与毫米波学报),2012,31(6):510-522.
[12]XIE Jia-Lin,ZHAO Yong-Xiang.Theory of the Klystrons Modulation[M].Beijing:Science Press(谢家麟,赵永翔.速调管群聚理论.北京:科学出版社),1966,229.
[2]Chodorow M,Kulke B.An extended-interaction klystron:efficiency and bandwidth[J].IEEE Transactions on Electron Devices,1966,13(4):439.
[3]Richard D,Mark H,Brian S,et al.Rugged and efficient Ka-band extended interaction klystrons for satellite communication systems[C].IEEE International Vacuum Electronics Conference(IVEC),Kitakyushu,Japan,2007:141-142.
[4]Roitman A,Berry D,Steer B.State-of-the-art W-band extended interaction klystron for the CloudS at program[J].IEEE Transactions on Electron Devices,2005,52(5):895-898.
[5]David C,Alex B,Igor C,et al.Extended interaction klystrons for terahertz power amplifiers[C].IEEE International Vacuum Electronics Conference(IVEC),Monterey,CA,2010:217-218.
[6]Shin Y M,Park G S,Scheltrum G P,et al.Circuit analysis of an extend-interaction klystron[J].Journal of the Korean Physical Society,2004,44(5):1239-1245.
[7]WANG Shu-Zhong,MA Jing,WANG Yong,et al.Design on Ka-band filter loaded three-gap coupled output cavity[J].J.Infrared Millim.Waves(王树忠,马菁,王勇,等.Ka波段滤波器加载三间隙耦合输出腔的设计.红外与毫米波学报),2010,29(2):105-108.
[8]Gilmour A S.Klystron,traveling-wave tubes,magnetrons,crossed-field amplifiers,and gyrotrons[M].丁耀根,张兆传,等译.北京:国防工业出版社,2012:p207.
[9]XING Jun-yi,FENG Jin-jun.Millimeter wave extended interaction device[J].Vacuum Electronic(邢俊毅,冯进军.毫米波扩展互作用器件.真空电子技术),2010,02:33-37.
[10]SHENG Xing,WEI Ying,SUN Fu-Jiang,et al.Ka-band extended-interaction klystron design[J].Vacuum Electronic(盛兴,韦莹,孙福江,等.Ka波段分布作用速调管技术.真空电子技术),2012,02:19-24.
[11]RUAN Cun-Jun,WANG Shu-Zhong,HAN Yin,et al.The electron optics system and beam-wave interaction for novel W-band sheet beam klystron[J].J.Infrared Millim.Waves(阮存军,王树忠,韩莹,等.W波段带状注速调管电子光学及注波互作用系统.红外与毫米波学报),2012,31(6):510-522.
[12]XIE Jia-Lin,ZHAO Yong-Xiang.Theory of the Klystrons Modulation[M].Beijing:Science Press(谢家麟,赵永翔.速调管群聚理论.北京:科学出版社),1966,229.