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A new view of phase distortion in a traveling wave tube 行波管相位畸变的新观点
4th IEEE International Conference on Vacuum Electronics, 2003 Pub Date : 2003-05-28 DOI: 10.1109/IVEC.2003.1286355
J. Wohlbier, J. Booske, I. Dobson
{"title":"A new view of phase distortion in a traveling wave tube","authors":"J. Wohlbier, J. Booske, I. Dobson","doi":"10.1109/IVEC.2003.1286355","DOIUrl":"https://doi.org/10.1109/IVEC.2003.1286355","url":null,"abstract":"The paper deals about the phase distortion in a Traveling Wave Tube. It is based on unique insights afforded by the MUSE model of a TWT. The phase distortion on dc and harmonic frequencies is studied via MUSE simulations. An approximate analytic solution to the S-MUSE model reveals that phase distortion up to the 1 dB gain compression point is due to the fact that the fundamental frequency is an intermodulation product of itself. Simulations are also compared to the large signal code LATTE. The majority of the phase distortion prior to gain compression is not due to the average slowing down of electrons was been analysed.","PeriodicalId":203178,"journal":{"name":"4th IEEE International Conference on Vacuum Electronics, 2003","volume":"98 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2003-05-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126779210","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Future prospects for high frequency devices based on vacuum microelectronics 基于真空微电子技术的高频器件的未来展望
4th IEEE International Conference on Vacuum Electronics, 2003 Pub Date : 2003-05-28 DOI: 10.1109/IVEC.2003.1286055
K. Yokoo
{"title":"Future prospects for high frequency devices based on vacuum microelectronics","authors":"K. Yokoo","doi":"10.1109/IVEC.2003.1286055","DOIUrl":"https://doi.org/10.1109/IVEC.2003.1286055","url":null,"abstract":"Field emission micro cathode and its array are promising to apply to high frequency devices due to a high current density of emitted electrons and a cathode size as small as micron or less. The paper describes prospects of vacuum microelectronic devices at high frequency as high as microwave and optical frequencies.","PeriodicalId":203178,"journal":{"name":"4th IEEE International Conference on Vacuum Electronics, 2003","volume":"55 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2003-05-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126646709","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Development of Ka-band 175W low gain TWT ka波段175W低增益行波管的研制
4th IEEE International Conference on Vacuum Electronics, 2003 Pub Date : 2003-05-28 DOI: 10.1109/IVEC.2003.1286044
T. Machida, T. Kanamoto, K. Tsutaki
{"title":"Development of Ka-band 175W low gain TWT","authors":"T. Machida, T. Kanamoto, K. Tsutaki","doi":"10.1109/IVEC.2003.1286044","DOIUrl":"https://doi.org/10.1109/IVEC.2003.1286044","url":null,"abstract":"This paper describes the development of Ka-band 175W low gain helix traveling wave tube (TWT), the model LD7285, for the gateway terminal of next generation satellite broadband communication systems and local multipoint distribution services(LMDS).The noise power is reduced by reducing the TWT gain and also to provide output power of 175 W over 27.5 - 30.0 GHz.","PeriodicalId":203178,"journal":{"name":"4th IEEE International Conference on Vacuum Electronics, 2003","volume":"4 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2003-05-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123869636","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 4
Design of a 50 MW multiple beam klystron at 11.424 GHz 11.424 GHz频率50mw多波束速调管的设计
4th IEEE International Conference on Vacuum Electronics, 2003 Pub Date : 2003-05-28 DOI: 10.1109/IVEC.2003.1286254
L. Song, P. Ferguson, L. Ives
{"title":"Design of a 50 MW multiple beam klystron at 11.424 GHz","authors":"L. Song, P. Ferguson, L. Ives","doi":"10.1109/IVEC.2003.1286254","DOIUrl":"https://doi.org/10.1109/IVEC.2003.1286254","url":null,"abstract":"The paper presents the design of a 50 MW multiple beam Klystron at 11.424 GHz. The klystron operates at low voltages for solid state power supplies. The reduced voltages provides decreased X-ray generation and a reduction in the risk of electrical breakdown. This paper analyses various cavity configurations including standard pillbox cavities and multiple cavity ring resonators using the 3D code, MAGIC.","PeriodicalId":203178,"journal":{"name":"4th IEEE International Conference on Vacuum Electronics, 2003","volume":"14 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2003-05-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124390902","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 1
Magneto-active plasma stream as effective source of electromagnetic radiation in microwave power engineering 磁源等离子体流是微波功率工程中有效的电磁辐射源
4th IEEE International Conference on Vacuum Electronics, 2003 Pub Date : 2003-05-28 DOI: 10.1109/IVEC.2003.1286284
A.P. Smakhtin, V. Rybakov
{"title":"Magneto-active plasma stream as effective source of electromagnetic radiation in microwave power engineering","authors":"A.P. Smakhtin, V. Rybakov","doi":"10.1109/IVEC.2003.1286284","DOIUrl":"https://doi.org/10.1109/IVEC.2003.1286284","url":null,"abstract":"The paper deals with magneto-active plasma stream as effective source of electromagnetic radiation in microwave power engineering. PEMG (plasma electromagnetic generator) allows to achieve the direct conversion of plasma stream energy to monochromatic microwave radiation by the decelerating plasma in a transverse magnetic field. The plasma stream moves through the transverse magnetic field with near-constant velocity as the drift flow. Ions of the plasma stream are ahead of the electrons and form longitudinal polarization of the plasma stream. Longitudinal electric field provides the conversion of ion kinetic energy to energy of rotating electron. The kinetic energy of the plasma stream transforms to the microwave radiation. The paper also presents the estimation of the possible level of PEMGs operation parameters and analysis of instability type of transverse electromagnetic waves.","PeriodicalId":203178,"journal":{"name":"4th IEEE International Conference on Vacuum Electronics, 2003","volume":"92 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2003-05-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115627450","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Development of a high efficiency travelling-wave tube for satellite communication 卫星通信用高效行波管的研制
4th IEEE International Conference on Vacuum Electronics, 2003 Pub Date : 2003-05-28 DOI: 10.1109/IVEC.2003.1286327
S. Ghosh, K. S. Prasad, P. V. Bhaskar, S. Prakash, V. Kiran, V. Srivastava
{"title":"Development of a high efficiency travelling-wave tube for satellite communication","authors":"S. Ghosh, K. S. Prasad, P. V. Bhaskar, S. Prakash, V. Kiran, V. Srivastava","doi":"10.1109/IVEC.2003.1286327","DOIUrl":"https://doi.org/10.1109/IVEC.2003.1286327","url":null,"abstract":"In this paper, the development of a high efficiency TWT for space applications has been presented. The tube has been developed for 60 watt output power in C-band with TWT efficiency 50%. The electron gun developed for the tube is Pierce convergent type electron gun with an ion barrier. The important aspect of this tube is the development of a four stage depressed collector. The depression of the collector electrodes are so adjusted to achieve collector efficiency in excess of 70%.","PeriodicalId":203178,"journal":{"name":"4th IEEE International Conference on Vacuum Electronics, 2003","volume":"34 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2003-05-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115381851","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 2
The study of helix traveling-wave tube cold-test characteristics by three-dimensional simulation codes 用三维模拟程序研究螺旋行波管冷试验特性
4th IEEE International Conference on Vacuum Electronics, 2003 Pub Date : 2003-05-28 DOI: 10.1109/IVEC.2003.1286088
B. Jia, A. Sinha, Deng Heng, Yang Gang, Chengxian Huang, G. Park
{"title":"The study of helix traveling-wave tube cold-test characteristics by three-dimensional simulation codes","authors":"B. Jia, A. Sinha, Deng Heng, Yang Gang, Chengxian Huang, G. Park","doi":"10.1109/IVEC.2003.1286088","DOIUrl":"https://doi.org/10.1109/IVEC.2003.1286088","url":null,"abstract":"In this study we used CST microwave studio and Ansoft HFSS to simulate cold characteristics of four different kinds of helix slow wave circuits and compared the results with the experiments.","PeriodicalId":203178,"journal":{"name":"4th IEEE International Conference on Vacuum Electronics, 2003","volume":"74 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2003-05-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122631779","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Flexible TWT amplifier for space applications 用于空间应用的柔性行波管放大器
4th IEEE International Conference on Vacuum Electronics, 2003 Pub Date : 2003-05-28 DOI: 10.1109/IVEC.2003.1286041
F. André, R. Pasdeloup, H. Rothacker
{"title":"Flexible TWT amplifier for space applications","authors":"F. André, R. Pasdeloup, H. Rothacker","doi":"10.1109/IVEC.2003.1286041","DOIUrl":"https://doi.org/10.1109/IVEC.2003.1286041","url":null,"abstract":"Flexible travelling wave tubes are now made available by TED and flexibility on the ground are analyzed here. In flight flexibility can be proposed in a near future at the advantage of the satellite systems. The output power range is 10W to 200W. The range of travelling wave tubes for space telecommunication has greatly increased. The total frequency range extends from 1.5 up to 32 GHz.","PeriodicalId":203178,"journal":{"name":"4th IEEE International Conference on Vacuum Electronics, 2003","volume":"215 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2003-05-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122823917","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 2
Complex dynamics of gyrotron with non-fixed structure 非固定结构回旋管的复杂动力学
4th IEEE International Conference on Vacuum Electronics, 2003 Pub Date : 2003-05-28 DOI: 10.1109/IVEC.2003.1286209
E. Blokhina, A. Rozhnev
{"title":"Complex dynamics of gyrotron with non-fixed structure","authors":"E. Blokhina, A. Rozhnev","doi":"10.1109/IVEC.2003.1286209","DOIUrl":"https://doi.org/10.1109/IVEC.2003.1286209","url":null,"abstract":"In this work the results of nonstationary processes investigation in relativistic electron generator-gyrotron with non-fixed field structure are presented. As distinct from previous works it was taken into account the realistic dependence of reflections coefficient from input and output devices irregularity, which is achieved by using received previously nonstationary non-local in time domain boundary conditions. The numerical simulation of nonstationary processes in gyrotron with non-fixed field structure is carried out.","PeriodicalId":203178,"journal":{"name":"4th IEEE International Conference on Vacuum Electronics, 2003","volume":"66 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2003-05-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122872866","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 4
Compression of frequency modulated microwave pulses in wave-guides 调频微波脉冲在波导中的压缩
4th IEEE International Conference on Vacuum Electronics, 2003 Pub Date : 2003-05-28 DOI: 10.1109/IVEC.2003.1286047
A. Phelps, S. Samsonov, G. Burt, G. Denisov, A. Cross, V. Bratman, W. He, K. Ronald, H. Yin
{"title":"Compression of frequency modulated microwave pulses in wave-guides","authors":"A. Phelps, S. Samsonov, G. Burt, G. Denisov, A. Cross, V. Bratman, W. He, K. Ronald, H. Yin","doi":"10.1109/IVEC.2003.1286047","DOIUrl":"https://doi.org/10.1109/IVEC.2003.1286047","url":null,"abstract":"In this paper, we propose that a helically corrugated waveguide, whose properties were intensively studied in the course of work on gyro-TWTs be used as a frequency dispersive medium for microwave pulse compression. The main advantage of such a waveguide is that helical symmetry and circular polarization of the operating mode permit the realization of the necessary dispersion for pulse compression without having to operate close to cutoff, which makes it possible to use such a compressor at the output of a high-power amplifier.","PeriodicalId":203178,"journal":{"name":"4th IEEE International Conference on Vacuum Electronics, 2003","volume":"92 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2003-05-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125547144","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
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