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Broadband traveling wave tubes in Ka- and Ku-band Ka和ku波段的宽带行波管
IEEE International Vacuum Electronics Conference. International Vacuum Electronics Conference Pub Date : 2014-04-22 DOI: 10.1109/IVEC.2014.6857483
P. Ehret, A. Laurent, E. Bosch
{"title":"Broadband traveling wave tubes in Ka- and Ku-band","authors":"P. Ehret, A. Laurent, E. Bosch","doi":"10.1109/IVEC.2014.6857483","DOIUrl":"https://doi.org/10.1109/IVEC.2014.6857483","url":null,"abstract":"The paper presents the capability of THALES Traveling Wave Tubes (TWT) for broadband satellite applications in the Ku- and the Ka-band. In the last years on the communication market a significant increase of data transfer has been recognized. Based on this continuing trend the satellite infrastructure has to provide a flexible and broadband solution for the communication equipment. The RF amplifier has a key role in the definition of the performance. The Traveling Wave Tube technology is able to support the broadband characteristic. THALES provides a portfolio of TWTs which will cover the need of the payload manufacturers. THALES has an outstanding experience in developing and manufacturing Traveling Wave Tubes and can demonstrate an impressive in orbit heritage.","PeriodicalId":88890,"journal":{"name":"IEEE International Vacuum Electronics Conference. International Vacuum Electronics Conference","volume":"129 1","pages":"47-48"},"PeriodicalIF":0.0,"publicationDate":"2014-04-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"74897187","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
Analysis of backward-wave oscillation in Gyro-TWT by steady-state multimode theory 用稳态多模理论分析陀螺行波管的后向波振荡
IEEE International Vacuum Electronics Conference. International Vacuum Electronics Conference Pub Date : 2014-04-22 DOI: 10.1109/IVEC.2014.6857664
Shuyuan Peng, Qiushi Wang, Zhaochuan Zhang, Jirun Luo
{"title":"Analysis of backward-wave oscillation in Gyro-TWT by steady-state multimode theory","authors":"Shuyuan Peng, Qiushi Wang, Zhaochuan Zhang, Jirun Luo","doi":"10.1109/IVEC.2014.6857664","DOIUrl":"https://doi.org/10.1109/IVEC.2014.6857664","url":null,"abstract":"The mode competition problems in a gyro-TWT were investigated by a nonlinear steady-state multimode theory. Simulation results show the effect of backward wave oscillation mode (TE<sub>21</sub><sup>(2)</sup>) and working mode (TE<sub>11</sub><sup>(1)</sup>) on each other for different beam current and guiding center radius, which helps to discuss how to suppress the oscillation and improve the amplification characteristics.","PeriodicalId":88890,"journal":{"name":"IEEE International Vacuum Electronics Conference. International Vacuum Electronics Conference","volume":"12 1","pages":"411-412"},"PeriodicalIF":0.0,"publicationDate":"2014-04-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"72865500","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
Multi-kW sheet beam amplifiers at Ka and W bands Ka和W波段的多kw片束放大器
IEEE International Vacuum Electronics Conference. International Vacuum Electronics Conference Pub Date : 2014-04-22 DOI: 10.1109/IVEC.2014.6857469
J. Pasour, D. Abe, K. Nguyen, E. Wright, D. Pershing, A. Balkcum, P. Larsen, F. Wood, R. Myers, B. Levush
{"title":"Multi-kW sheet beam amplifiers at Ka and W bands","authors":"J. Pasour, D. Abe, K. Nguyen, E. Wright, D. Pershing, A. Balkcum, P. Larsen, F. Wood, R. Myers, B. Levush","doi":"10.1109/IVEC.2014.6857469","DOIUrl":"https://doi.org/10.1109/IVEC.2014.6857469","url":null,"abstract":"NRL's unique sheet-beam electron gun, which produces a 3.5-4-A, 0.3 × 4 mm electron beam at ~20 kV, has been successfully used to power multi-kW amplifiers at both Ka and W bands. The 94-GHz narrow-band EIK uses a 3-cavity circuit to produce a peak output power of over 7.5 kW, with saturated gain of ~35 dB. The Ka-band amplifier uses a double staggered ladder coupled-cavity circuit to achieve a peak output power >10 kW at 34 GHz, with a 3-dB bandwidth of 5 GHz and saturated gain of ~15 dB. The performance of both amplifiers is in very good agreement with models and simulations.","PeriodicalId":88890,"journal":{"name":"IEEE International Vacuum Electronics Conference. International Vacuum Electronics Conference","volume":"72 1","pages":"19-20"},"PeriodicalIF":0.0,"publicationDate":"2014-04-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"73869296","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
Electron-positron matter waves as oscillations of Minkowski spacetime 作为闵可夫斯基时空振荡的电子-正电子物质波
IEEE International Vacuum Electronics Conference. International Vacuum Electronics Conference Pub Date : 2014-04-22 DOI: 10.1109/IVEC.2014.6857710
A. Gritsunov
{"title":"Electron-positron matter waves as oscillations of Minkowski spacetime","authors":"A. Gritsunov","doi":"10.1109/IVEC.2014.6857710","DOIUrl":"https://doi.org/10.1109/IVEC.2014.6857710","url":null,"abstract":"An attempt is made to generalize the basic idea of the self-sufficient potential formalism in electrodynamics (interpretation of electromagnetic phenomena as natural or forced oscillations of the Minkowski spacetime treated as a distributed electromagnetic oscillating system) on the De Broglie waves. Both electrons and positrons are considered as excited modes (oscillations) of a distributed electron-positron oscillating system, not as “hard” particles. Thus, the matter waves are treated as real oscillations of the Minkowski spacetime, not as Born's “probability waves”.","PeriodicalId":88890,"journal":{"name":"IEEE International Vacuum Electronics Conference. International Vacuum Electronics Conference","volume":"48 1","pages":"503-504"},"PeriodicalIF":0.0,"publicationDate":"2014-04-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"84687832","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
Review of particle-in-cell (PIC) simulations of an oven magnetron 炉磁控管的粒子池(PIC)模拟研究进展
IEEE International Vacuum Electronics Conference. International Vacuum Electronics Conference Pub Date : 2014-04-22 DOI: 10.1109/IVEC.2014.6857707
A. Andreev, S. Birla
{"title":"Review of particle-in-cell (PIC) simulations of an oven magnetron","authors":"A. Andreev, S. Birla","doi":"10.1109/IVEC.2014.6857707","DOIUrl":"https://doi.org/10.1109/IVEC.2014.6857707","url":null,"abstract":"The conventional microwave oven with the 2.45 GHz “cooker” magnetron producing output microwave power of 0.7-1.0 kW has become de-facto one of the “must-have” from the long line of different kitchen appliances available for everyday use in every single US home or office. A problem has arisen, however, during the last 10 years with the rise of numerous wireless systems, most notable of which is the IEEE 802.11/WiFi system, operating at the same frequency 2.45 GHz in a close proximity to the working microwave oven. The problem is called the Electro-Magnetic Interference (EMI) and it is making life really complicated for nearby wireless computer networks and numerous home/office wireless devices. One of the possible solutions of the EMI problem is to redesign the “cooker” magnetron to operate at the frequency located at the outer edge of the Wi-Fi spectrum, 2.48 GHz for example. The presentation describes how the modern computer particle-in-cell (PIC) simulations of a conventional double-strapped ten-cavity non-relativistic magnetron may help one to design and build the new 2.48 GHz “cooker” magnetron with the reduced EMI problem to home/office 2.45 GHz wireless devices.","PeriodicalId":88890,"journal":{"name":"IEEE International Vacuum Electronics Conference. International Vacuum Electronics Conference","volume":"26 1","pages":"497-498"},"PeriodicalIF":0.0,"publicationDate":"2014-04-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"85051069","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
160-Watt radiation-cooled, linearized X-band helix TWTA flight set 160瓦辐射冷却，线性x波段螺旋TWTA飞行装置
IEEE International Vacuum Electronics Conference. International Vacuum Electronics Conference Pub Date : 2014-04-22 DOI: 10.1109/IVEC.2014.6857508
R. H. Martin, W. Menninger, X. Zhai, S. T. Blunk, J. Feicht
{"title":"160-Watt radiation-cooled, linearized X-band helix TWTA flight set","authors":"R. H. Martin, W. Menninger, X. Zhai, S. T. Blunk, J. Feicht","doi":"10.1109/IVEC.2014.6857508","DOIUrl":"https://doi.org/10.1109/IVEC.2014.6857508","url":null,"abstract":"L-3 Communications Electron Technologies Inc., (L-3 ETI), recently introduced a modernized 160W, radiation-cooled, linearized X-band helix traveling-wave tube amplifier (LTWTA). The traveling-wave tube (TWT) has completed space-flight qualification and units for two flight sets have been manufactured and tested with an average overall efficiency of 69.0%. This paper will discuss the LTWTA flight set performance and TWT flight qualification testing.","PeriodicalId":88890,"journal":{"name":"IEEE International Vacuum Electronics Conference. International Vacuum Electronics Conference","volume":"25 1","pages":"97-98"},"PeriodicalIF":0.0,"publicationDate":"2014-04-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"82184593","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
Resonance interaction in electron-positron medium with Coulomb field compensation 具有库仑场补偿的电子-正电子介质共振相互作用
IEEE International Vacuum Electronics Conference. International Vacuum Electronics Conference Pub Date : 2014-04-22 DOI: 10.1109/IVEC.2014.6857660
Yury D. Mozgovoi, S. A. Khritkin
{"title":"Resonance interaction in electron-positron medium with Coulomb field compensation","authors":"Yury D. Mozgovoi, S. A. Khritkin","doi":"10.1109/IVEC.2014.6857660","DOIUrl":"https://doi.org/10.1109/IVEC.2014.6857660","url":null,"abstract":"Electron-positron medium is considered as a promising implementation of powerful microwave devices on multibeam electron and positron streams. Simulation of the resonant interaction processes in electron-positron substance is carried out using macroscopic wave functions of electrons and positrons of macroscopic quantum theory. It is shown that at optimum space charge observed nonlinear resonance exchange process leading to the compensation of the Coulomb field.","PeriodicalId":88890,"journal":{"name":"IEEE International Vacuum Electronics Conference. International Vacuum Electronics Conference","volume":"29 1","pages":"403-404"},"PeriodicalIF":0.0,"publicationDate":"2014-04-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"79733647","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
Metamaterial-enhanced traveling wave tubes 超材料增强行波管
IEEE International Vacuum Electronics Conference. International Vacuum Electronics Conference Pub Date : 2014-04-22 DOI: 10.1109/IVEC.2014.6857559
A. Rashidi, N. Behdad
{"title":"Metamaterial-enhanced traveling wave tubes","authors":"A. Rashidi, N. Behdad","doi":"10.1109/IVEC.2014.6857559","DOIUrl":"https://doi.org/10.1109/IVEC.2014.6857559","url":null,"abstract":"We present the design of a folded waveguide traveling wave tube (TWT) periodically loaded by epsilon negative (ENG) metamaterial slabs. When a given folded waveguide slow-wave structure (SWS) is loaded with ENG metamaterials, its band diagram is shifted to higher frequencies. To shift the band diagram back to the desired (lower) frequency of operation, we scale up the structure's dimensions. This enlargement of the SWS, however, allows for increasing the beam tunnel diameter of the SWS for a given frequency of operation and also increases the interaction impedance of the TWT. Both of these physical phenomena can be exploited to increase the gain of the TWT for a given number of periods in the SWS and achieve a higher output power level. This concept is expected to be particularly useful at millimeter-wave frequencies where the beam diameter and current are usually limited by the small dimensions of the SWS thereby limiting the gain and total output power of millimeter-wave TWTs.","PeriodicalId":88890,"journal":{"name":"IEEE International Vacuum Electronics Conference. International Vacuum Electronics Conference","volume":"50 1","pages":"199-200"},"PeriodicalIF":0.0,"publicationDate":"2014-04-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"79786173","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 gridded sheet beam electron gun 栅格片束电子枪的设计
IEEE International Vacuum Electronics Conference. International Vacuum Electronics Conference Pub Date : 2014-04-22 DOI: 10.1109/IVEC.2014.6857729
He Lu, Q. Hu, Tao Huang, Yu-Lu Hu, Jianqing Li, Bin Li
{"title":"Design of gridded sheet beam electron gun","authors":"He Lu, Q. Hu, Tao Huang, Yu-Lu Hu, Jianqing Li, Bin Li","doi":"10.1109/IVEC.2014.6857729","DOIUrl":"https://doi.org/10.1109/IVEC.2014.6857729","url":null,"abstract":"A sheet beam gun with spoke grid is designed with EOS [1][2]. The results between with spoke grid and without spoke grid have been compared under the same wiggler magnetic field. When there is spoke grid, the electron beam will have a strong fluctuation in the narrow planar, but will not have great impact in the broad planar.","PeriodicalId":88890,"journal":{"name":"IEEE International Vacuum Electronics Conference. International Vacuum Electronics Conference","volume":"61 1","pages":"541-542"},"PeriodicalIF":0.0,"publicationDate":"2014-04-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"85118782","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
Design of a 233 GHz high-gain single-stage hybrid-serpentine TWT 233 GHz高增益单级混合蛇形行波管的设计
IEEE International Vacuum Electronics Conference. International Vacuum Electronics Conference Pub Date : 2014-04-22 DOI: 10.1109/IVEC.2014.6857568
K. Nguyen, C. Joye, E. Wright, A. Cook, J. Calame, S. Cooke, D. Pershing, B. Levush, J. Pasour, D. Abe
{"title":"Design of a 233 GHz high-gain single-stage hybrid-serpentine TWT","authors":"K. Nguyen, C. Joye, E. Wright, A. Cook, J. Calame, S. Cooke, D. Pershing, B. Levush, J. Pasour, D. Abe","doi":"10.1109/IVEC.2014.6857568","DOIUrl":"https://doi.org/10.1109/IVEC.2014.6857568","url":null,"abstract":"The design of a high-gain single-stage TWT amplifier is presented. This amplifier will be driven by a 124 mA 20 kV electron gun currently under development. Output power is expected to be more than 80 W across the 231.5-235 GHz band at 113 mW of input power. Predicted saturated output power is more than 140 W, which can yield 23% overall efficiency with the use of a single-stage depressed collector.","PeriodicalId":88890,"journal":{"name":"IEEE International Vacuum Electronics Conference. International Vacuum Electronics Conference","volume":"35 1","pages":"217-218"},"PeriodicalIF":0.0,"publicationDate":"2014-04-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"85478317","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: 7
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