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2007 IEEE International Vacuum Electronics Conference最新文献

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Evaluation and Impacts of Space TWT Gain Change Over Life 空间行波管增益随寿命变化的评估与影响
2007 IEEE International Vacuum Electronics Conference Pub Date : 2007-05-15 DOI: 10.1109/IVELEC.2007.4283289
M. Kaliski
{"title":"Evaluation and Impacts of Space TWT Gain Change Over Life","authors":"M. Kaliski","doi":"10.1109/IVELEC.2007.4283289","DOIUrl":"https://doi.org/10.1109/IVELEC.2007.4283289","url":null,"abstract":"This paper has described the determination method of long term TWT gain stability. If there is a change in gain, it can be detected using available spacecraft level on-orbit measurements and then quantifies the resulting impact on linearity performance and it concluded TWT gain change can be detected using available satellite telemetry, provided that the TWT operation meets the criteria described.","PeriodicalId":254940,"journal":{"name":"2007 IEEE International Vacuum Electronics Conference","volume":"27 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2007-05-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123656275","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
Analysis and Test Preparation of Attenuator for W-band Folded Waveguide TWT w波段折叠波导行波管衰减器的分析与测试制备
2007 IEEE International Vacuum Electronics Conference Pub Date : 2007-05-15 DOI: 10.1109/IVELEC.2007.4283213
Jun Cai, Jinjun Feng, Xianping Wu, Y. Hu, B. Qu, Mingguang Huang, Shaoyun Ma
{"title":"Analysis and Test Preparation of Attenuator for W-band Folded Waveguide TWT","authors":"Jun Cai, Jinjun Feng, Xianping Wu, Y. Hu, B. Qu, Mingguang Huang, Shaoyun Ma","doi":"10.1109/IVELEC.2007.4283213","DOIUrl":"https://doi.org/10.1109/IVELEC.2007.4283213","url":null,"abstract":"Attenuator has been designed to meet the strict requirements in W-band for folded waveguide TWT. Synthetical analysis of parameters is carried out, and using microwave studio simulation results show design has good performances. Fabrication technology and test system are in progress to develop the practical attenuator.","PeriodicalId":254940,"journal":{"name":"2007 IEEE International Vacuum Electronics Conference","volume":"53 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2007-05-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128306389","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: 9
Generator on the corrugated resonator 波纹谐振器上的发电机
2007 IEEE International Vacuum Electronics Conference Pub Date : 2007-05-15 DOI: 10.1109/IVELEC.2007.4283341
S. Kolosov, A. Kurayev, A.P. Harseyev
{"title":"Generator on the corrugated resonator","authors":"S. Kolosov, A. Kurayev, A.P. Harseyev","doi":"10.1109/IVELEC.2007.4283341","DOIUrl":"https://doi.org/10.1109/IVELEC.2007.4283341","url":null,"abstract":"In the report are given the results of research of the new type of microwave electronic device - gyroton on the corrugated resonator.","PeriodicalId":254940,"journal":{"name":"2007 IEEE International Vacuum Electronics Conference","volume":"22 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2007-05-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123145894","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
The Design And Testing of a 1.3GHz, 120kW Injector Klystron 1.3GHz 120kW喷油器速调管的设计与测试
2007 IEEE International Vacuum Electronics Conference Pub Date : 2007-05-15 DOI: 10.1109/IVELEC.2007.4283264
A. Wheelhouse, S. Andrews, S. Guy, S. Hurrell, E. Sobieradzki
{"title":"The Design And Testing of a 1.3GHz, 120kW Injector Klystron","authors":"A. Wheelhouse, S. Andrews, S. Guy, S. Hurrell, E. Sobieradzki","doi":"10.1109/IVELEC.2007.4283264","DOIUrl":"https://doi.org/10.1109/IVELEC.2007.4283264","url":null,"abstract":"This paper describes the design process for a 1.5 GHz, 120 kW CW injector klystron for use on the Energy Recovery Linac at Cornell University, and presents some of the early test performance data.","PeriodicalId":254940,"journal":{"name":"2007 IEEE International Vacuum Electronics Conference","volume":"91 4 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2007-05-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129904905","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
Millimeter Wave Radar and EMI for Safety Drive Applications 毫米波雷达和电磁干扰的安全驱动应用
2007 IEEE International Vacuum Electronics Conference Pub Date : 2007-05-15 DOI: 10.1109/IVELEC.2007.4283196
M. Masegi
{"title":"Millimeter Wave Radar and EMI for Safety Drive Applications","authors":"M. Masegi","doi":"10.1109/IVELEC.2007.4283196","DOIUrl":"https://doi.org/10.1109/IVELEC.2007.4283196","url":null,"abstract":"Latest situation of vehicle safety drive application systems and millimeter-wave radar used for those safety systems are explained. Also, EMI concerns for those advanced electronic vehicle components are focused.","PeriodicalId":254940,"journal":{"name":"2007 IEEE International Vacuum Electronics Conference","volume":"89 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2007-05-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133828762","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
Compact High-Power THz Source Development 紧凑型大功率太赫兹源开发
2007 IEEE International Vacuum Electronics Conference Pub Date : 2007-05-15 DOI: 10.1109/IVELEC.2007.4283337
H. Bluem, A. Todd, R. Jackson
{"title":"Compact High-Power THz Source Development","authors":"H. Bluem, A. Todd, R. Jackson","doi":"10.1109/IVELEC.2007.4283337","DOIUrl":"https://doi.org/10.1109/IVELEC.2007.4283337","url":null,"abstract":"A compact, affordable THz source to provide high power is under development. The prototype is designed to operate around 600 GHz with reasonable gain and efficiency. The goal of the present project is development of a tunable THz source, based on the ubitron concept, utilizing an RF gun with an electron beam energy less than 2 MeV. This configuration results in a cost-effective, compact system capable of generating flexible, high-power THz radiation. Our simulations projected the source deliver THz radiation with 10s of watts of output power.","PeriodicalId":254940,"journal":{"name":"2007 IEEE International Vacuum Electronics Conference","volume":"49 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2007-05-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130951812","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
Improvements in Broadband Performance of Mini-TWTs at e2v technologies 小型行波管e2v技术宽带性能的改进
2007 IEEE International Vacuum Electronics Conference Pub Date : 2007-05-15 DOI: 10.1109/IVELEC.2007.4283202
T. Ghosh, A. Challis, A. Tokeley, K. Rushbrook, I. Poston, R. Matthews, A. Jacob, D. Bowler
{"title":"Improvements in Broadband Performance of Mini-TWTs at e2v technologies","authors":"T. Ghosh, A. Challis, A. Tokeley, K. Rushbrook, I. Poston, R. Matthews, A. Jacob, D. Bowler","doi":"10.1109/IVELEC.2007.4283202","DOIUrl":"https://doi.org/10.1109/IVELEC.2007.4283202","url":null,"abstract":"Positive phase velocity tapering has been implemented to improve the broadband performance of helix traveling wave tubes (TWTs). The slow wave structures of a mini-TWT and a midi-TWT have been optimized using this technique. A comparison between the actual performances of the tubes with uniform and positive tapered pitch shows a significant improvement in efficiency and power at the higher end of the frequency band of operation in the later case.","PeriodicalId":254940,"journal":{"name":"2007 IEEE International Vacuum Electronics Conference","volume":"2012 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2007-05-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133897434","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
High Efficiency, 250 W300 W S-band and 100 W K-band Traveling Wave Tubes for Satellite Communications 高效，250w300w s波段和100w k波段卫星通信行波管
2007 IEEE International Vacuum Electronics Conference Pub Date : 2007-05-15 DOI: 10.1109/IVELEC.2007.4283217
W. Menninger, R. Benton, X. Zhai, K. Ching, S. Aldana-Gutierrez, W. McGeary
{"title":"High Efficiency, 250 W300 W S-band and 100 W K-band Traveling Wave Tubes for Satellite Communications","authors":"W. Menninger, R. Benton, X. Zhai, K. Ching, S. Aldana-Gutierrez, W. McGeary","doi":"10.1109/IVELEC.2007.4283217","DOIUrl":"https://doi.org/10.1109/IVELEC.2007.4283217","url":null,"abstract":"L-3 Communications Electron Technologies, Inc. (L-3 ETI) continues its development of high efficiency traveling-wave tubes (TWTs) for space communications with the 2006 development of a 250 W - 300 W S-band TWT and a 100 W K-band TWT. These TWTs will enhance L-3 ETI's TWT product line and cover important emerging applications. For TWTs placed in orbit since 1987 (when L-3 ETI, then Hughes EDD, switched to M-coat cathodes), L-3 ETI has a 46 FIT (failures in time) observed TWT failure rate (1 FIT = one failure for every one billion operating hours).","PeriodicalId":254940,"journal":{"name":"2007 IEEE International Vacuum Electronics Conference","volume":"56 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2007-05-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132018501","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: 8
Field emission from multiwall carbon nanotubes on flexible paper substrates 柔性纸基上多壁碳纳米管的场发射
2007 IEEE International Vacuum Electronics Conference Pub Date : 2007-05-15 DOI: 10.1109/IVELEC.2007.4283382
S. Lyth, S. Silva
{"title":"Field emission from multiwall carbon nanotubes on flexible paper substrates","authors":"S. Lyth, S. Silva","doi":"10.1109/IVELEC.2007.4283382","DOIUrl":"https://doi.org/10.1109/IVELEC.2007.4283382","url":null,"abstract":"This paper presents a method for homogeneously coating paper substrates with acid-oxidised multiwall carbon nanotubes (o-MWNT) via a dip-coating technique. The field emission (FE) properties of these substrates were investigated as a function of the surface roughness (and thereby the morphology) of the underlying paper substrate. This technique brings about the possibility of directly coating o-MWNT in a controlled manner onto a plethora of pre-patterned substrates with morphologies chosen to maximise the enhancement factor (beta), over very large areas, using solution processing.","PeriodicalId":254940,"journal":{"name":"2007 IEEE International Vacuum Electronics Conference","volume":"24 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2007-05-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132273876","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
Efficient field emission of carbon nanotubes grown on a copper substrate 在铜衬底上生长的碳纳米管的高效场发射
2007 IEEE International Vacuum Electronics Conference Pub Date : 2007-05-15 DOI: 10.1109/IVELEC.2007.4283350
Xiaowei Yin, Qilong Wang, C. Lou, Xiaobing Zhang, W. Lei, Chengxian Huang, Guodong Yang
{"title":"Efficient field emission of carbon nanotubes grown on a copper substrate","authors":"Xiaowei Yin, Qilong Wang, C. Lou, Xiaobing Zhang, W. Lei, Chengxian Huang, Guodong Yang","doi":"10.1109/IVELEC.2007.4283350","DOIUrl":"https://doi.org/10.1109/IVELEC.2007.4283350","url":null,"abstract":"Carbon nanotubes have been grown on a polished copper substrate by thermal chemical vapor deposition (CVD). Nickel film is deposited on the metallic substrate as catalyst and the reactant gas is acetylene. Efficient field emission of CNTs emitters (Emission area is about 3.14 mm2) is observed from I-V and F-N curves. Stable emission current with the density of more than 20mA was got at the electric field of 2.87V/um. SEM and TEM were used to characterize the morphologies of carbon nanotubes.","PeriodicalId":254940,"journal":{"name":"2007 IEEE International Vacuum Electronics Conference","volume":"127 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2007-05-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133747698","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
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