Ke波段小型多注速调管

介绍了近期研制的Ke波段小型多注速调管，对该管的设计特点、结构特点作了较详细的介绍，还对设计该类型管的技术关键进行了分析。     

多注速调管一种新型大功率微波放大器

本文介绍了一种新型大功率微波放大器多注速调管。扼要地评述了多注速调管的发展概况,详细地介绍了基于速调管谐振腔基模的多注速调管的工作原理和主要特点。研究了多注速调管参数对工作带宽和输出功率的影响。给出了多注速调管的功率限制。指出了多注速调管的关键技术问题和发展趋势。     

一种多注速调管发射机的设计

介绍了一种多注速调管发射机。在数百千瓦功率电平上,多注速调管具有频带宽、工作电压低、体积小、重量轻、增益和效率高等特点,可根据系统要求,设计出性能不同的发射机,所以许多雷达选用多注速调管作为末极发射管。文中对多注速调管的使用、高压电源和控保电路进行了阐述,着重介绍了栅极调制器设计方法及刚管的参数选择,最后给出本系统的测试结果。     

多注速调管——一种新型大功率微波放大器

本文介绍了一种新型大功率微波放大器－－多注速调管。扼要地评述了多注速调管的发展概况，详细地介绍了基于速调管谐振腔基模的多注速调管的工作原理和主要特点。研究了多注速调管参数对工作宽和输出功率的影响。给出了多注速调管的功率限制。指出了多注速调管的关键技术问题和发展趋势。     

多注速调管发射机的设计和应用

本文介绍了一种新型大功率微波管多注速调管的主要特点，重点叙述了多注速调管发射机设计中所采用的关键技术，并对其应用前景作了客观评述。     

小型化加速器用X波段多注速调管的研制与测试

介绍了一种应用于加速器系统的X波段高功率多注速调管,该管脉冲输出功率达到2.2 MW,增益大于45 dB,效率大于55%。文章对该速调管的电子光学系统、高频系统、输能系统以及收集极等各项专题的设计及模拟仿真进行了详细介绍,设计过程和结果可以为其它同类型的高功率多注速调管提供技术基础。     

多注速调管在雷达发射机中的应用

本文简述了多注速调管的主要特点,列举了多注速调管在雷达发射机中的应用事例,介绍了一种X波段多注速调管雷达发射机。     

宽脉冲大功率多注速调管

介绍了近期研制的X波段宽脉冲大功率栅控多注速调管的情况,该多注速调管在1.1ms脉冲宽度下实现了130MHz内6kW平均功率的稳定指标。本文对其结构特点也作了相应的介绍。     

高峰值功率多注速调管的发展现状

高峰值功率多注速调管是一种在单注速调管及传统多注速调管的基础上发展起来的新型微波电真空器件。本文介绍了高峰值功率多注速调管的基本特点及目前世界上高峰值功率多注速调管的发展状况,其中包括已经研制成功的10MW级多注速调管、正在研制的50 MW级多注速调管及一些处于概念设计阶段的更高功率水平的多注速调管。最后阐述了研制高峰值功率多注速调管遇到的问题及可能的解决方法,并对其发展前景进行了展望。     

超宽带多注速调管的模拟研究

本文介绍了多注速调管的发展历史和现状,以及速调管模拟软件的发展情况。用1．5维软件KIystron-MSU和2．5维软件Arsenal-MSU对超宽带多注速调管进行了设计计算,并对计算结果进行分析,得到了比较好的输出特性。计算结果表明可以实现该超宽带多注速调管,其带宽10-14％,增益40～50dB,效率40～50％。     

中功率宽带多注速调管的研制进展

介绍了Ku波段中功率宽带多注速调管的最新研制进展情况,该管实现了工作电压14 kV、带宽大于1.8%、脉冲功率大于20 kW的指标。文中给出该管的试验数据,并对其中的关键技术进行了分析。     

多注速调管技术的新进展

系统地介绍了多注速调管的工作原理、主要特点和发展概况。比较详细地分析了俄罗斯、中国和法国等国研制的多注速调管的主要性能指标和技术特点，分析了多注速调管研制中遇到的关键技术问题；讨论了多注速调管技术的发展趋势和应用范围。     

RECENT PROGRESS IN MULTI—BEAM KLYSTRON IN IECAS

Recent research progresses in Multi-Beam Klystron(MBK)in IECAS are briefly introduced in the letter,The S-band MBKs of IECAs have peak power of 120-250kW,average power of 4-9kW,efficiency of 35-45%,gain of 41-46dB.beam voltage of 15-19kV,and weight of 40-45kg.Some key technical problem of MBK are also described and discussed.Among them,improving the design of MBK to botain the required bandwidth,raising beam transmission to increase average power,eliminating oscillation and spray spectrum,overcoming window breakdown caused by magic mode,reducing breakdown times of electron gun,are most important things for the practical MBK.Besides,further research owrk in MBK in IECAS is commented.     

The multiple-beam klystron

The multiple-beam klystron (MBK) is a device for extending klystron power generation capability at a given frequency by a factor of ten or more. The MBK utilizes a multiplicity of electron beams in conjunction with multiwavelength waveguide circuits. These circuits are periodically loaded and operate in thepi/2-mode. The efficiency, bandwidth, gain and stability of the MBK are equal to or better than that of the single-beam prototype klystron. Furthermore, the MBK permits generation of a given power level at an unusually low voltage, thus minimizing insulation, X-radiation, and modulator problems. An MBK utilizing ten external-circuit klystrons has been built for 750-Mc operation to demonstrate the principle of the device. A single main magnetic circuit is used to focus all beams simultaneously. An RF power output ten times that of one klystron was measured, corresponding to an efficiency of 44 per cent. Bandwidth and gain were identical with single-beam prototype operation. Individual beam drop-out tests were made which showed no disruption of operation in case of the failure of one or more beams. Limited tests tend to confirm the conclusion that the harmonic content of an MBK can be lower than that of a single-beam klystron.     

Ka波段多注速调管的研制

主要介绍了一支Ka波段多注速调管的研制进展;该设计方案在毫米波段采用了多注技术和分布作用腔技术,给出了采用CAD技术对各部分分析计算的结果,包括总体设计、电子光学设计、高频互作用段设计,最后与实验结果进行了对比验证,给出了改进方向。     

X波段同轴腔多注速调管的研究

开展了具有同轴谐振腔互作用电路和双模工作杆控电子枪的X波段同轴腔双模多注速调管的研究工作.结合数值计算和冷测实验,对工作于TM₃₁₀高次模的同轴谐振腔模式分布和特性参数进行研究,获得了可满足多注速调管要求的谐振腔特性阻抗和良好的模式稳定性.采用具有双控制极的新型杆控多注电子枪及电子光学系统,可使多注速调管具有双模的新工作特性,通过数值模拟获得了优化的几何参数和具有良好层流性和波动性的空心多电子注.对采用6个电子注和5个谐振腔的X波段多注速调管进行了注波互作用大信号计算,结果表明当电子注电压为21.5kV,脉冲电流为14.4A时,可在30MHz频带范围内获得的100kW左右的脉冲输出功率,互作用效率大于30%,增益大于36dB.     

110kHz高重频多注速调管发射机

通过某110 kHz高功率多注速调管发射机的研制介绍了高重频发射机的设计要点,重点介绍了一种采用IGBT开关管串联组成的高重频高压固态浮动板调制器的设计,对调制器的电路组成和为实现高重频所采取的关键技术进行了简要的介绍,对发射机的主要组成、高压电源和撬棒保护电路等也进行了简要的介绍。试验结果表明,采用固态开关串联完全可取代传统的真空管开关,在高重频的大功率雷达发射机中稳定可靠工作。     

Experimental Study and Analysis of an S-Band Multiple-Beam Klystron With 6% Bandwidth

We present experimental results and analyses of an eight-beam five-cavity multiple-beam klystron (MBK) operating at a center frequency of ~3.2 GHz. The device met its performance goals in its first hardware implementation, generating a peak RF output power of 600 kW and a 3-dB bandwidth of ~6%. The circuit was modeled with TESLA, a 2.5-D large-signal klystron/MBK code that was extended to enable simulations of the low- Q multiple-gap cavities used to increase the bandwidth. Details of the model and underlying theory are described, and the simulation results are compared with experimental measurements. The good agreement between the model and the experiment provides a validation for our tools and techniques that will be used in the design of future devices.     

Properties of electromagnetic beams generated by ultra-widebandwidth pulse-driven arrays

Analytical bounds on the characteristics of beams generated by an arbitrary pulse-driven array are derived and supported with numerical calculations. These bounds extend the meaning of near-field distances or diffraction lengths to the situation where the array driving functions can be broad-bandwidth signals. Particular attention is given to transmitting and receiving array systems which consist of elements that are not large in comparison to the shortest wavelength of significance contained in the signals driving them. Their output signals constitute higher-order beams whose coherence properties are degraded more slowly by diffraction than lower-order beams. It is shown that for certain measures of performance involving these beam characteristics, a localized wave pulse-driven array can outperform similar continuous-wave-driven arrays. An array with independent addressable elements is required to realize these localized wave effects. The enhanced localization effects are intimately coupled to the proper spatial distribution of broad-bandwidth signals driving the array