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500W S-band traveling wave tube 500W s波段行波管
IEEE International Vacuum Electronics Conference. International Vacuum Electronics Conference Pub Date : 2014-04-22 DOI: 10.1109/IVEC.2014.6857507
W. Durr, P. Ehret, E. Bosch
{"title":"500W S-band traveling wave tube","authors":"W. Durr, P. Ehret, E. Bosch","doi":"10.1109/IVEC.2014.6857507","DOIUrl":"https://doi.org/10.1109/IVEC.2014.6857507","url":null,"abstract":"The paper shows a new generation very high power conduction cooled S-band TWT feasible for 500W continuous RF output power. This TWT, named TL 2500, was designed for geostationary payloads with an overall output power of several kW. The RF output of the TWT is done with a WR340 ¼ height waveguide interface which will be used already on these payloads for the high power network up to the antenna. The waveguide output of the TWT is a very robust design without any dielectric inside, similar to [1]. It was tested successfully with more than 7 dB multipaction margin [2], fully compatible to ESA requirements [3]. Simultaneously the efficiency was improved significantly which can be used to increase additional the overall payload output power. Coming from a well-known heritage TWT TL2240 with typical output power of 250W, the new TL 2500 will reduce significantly the complexity of an S-band high power payload. With a reduced number of needed channel amplifiers, linearizers and power combining networks this TWT will give a significant mass and cost improvement to the customers.","PeriodicalId":88890,"journal":{"name":"IEEE International Vacuum Electronics Conference. International Vacuum Electronics Conference","volume":"7 1","pages":"95-96"},"PeriodicalIF":0.0,"publicationDate":"2014-04-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"79128119","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
M-type oscillator with periodic metamaterial-like electrodynamic system 具有周期性超材料样电动力系统的m型振荡器
IEEE International Vacuum Electronics Conference. International Vacuum Electronics Conference Pub Date : 2014-04-22 DOI: 10.1109/IVEC.2014.6857505
M. Fuks, E. Schamiloglu
{"title":"M-type oscillator with periodic metamaterial-like electrodynamic system","authors":"M. Fuks, E. Schamiloglu","doi":"10.1109/IVEC.2014.6857505","DOIUrl":"https://doi.org/10.1109/IVEC.2014.6857505","url":null,"abstract":"Metamaterial-like slow wave structure systems are being considered in an O-type and an M-type device. In both systems the period of the structures is much less than the wavelength of the radiation. These devices are being explored for their novel characteristics.","PeriodicalId":88890,"journal":{"name":"IEEE International Vacuum Electronics Conference. International Vacuum Electronics Conference","volume":"41 1","pages":"91-92"},"PeriodicalIF":0.0,"publicationDate":"2014-04-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"77073846","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
New modular implementation of 2D large-signal code and its application to the modeling of wide class of TWT amplifiers 二维大信号编码的新型模块化实现及其在宽类行波管放大器建模中的应用
IEEE International Vacuum Electronics Conference. International Vacuum Electronics Conference Pub Date : 2014-04-22 DOI: 10.1109/IVEC.2014.6857466
I. Chernyavskiy, A. Vlasov, D. Abe, B. Levush, T. Antonsen
{"title":"New modular implementation of 2D large-signal code and its application to the modeling of wide class of TWT amplifiers","authors":"I. Chernyavskiy, A. Vlasov, D. Abe, B. Levush, T. Antonsen","doi":"10.1109/IVEC.2014.6857466","DOIUrl":"https://doi.org/10.1109/IVEC.2014.6857466","url":null,"abstract":"We report on the extension and further generalization of two different large-signal models suitable for the 2D modeling of TWTs based on different types of slow-wave structures. The initial implementation of the 2D large-signal codes TESLA-CC and TESLA-FW has been generalized in such way to create a single algorithm with modular extensions that can be applied to the modeling of coupled-cavity or serpentine/folded-waveguide types of slow-wave structures. This new modular code is called TESLA-TWT and, in general, it can be extended in the future to support other types of the slow-wave structures. As a next step, TESLA-TWT has been extended for parallel operation, which makes it perfectly applicable to the modeling of “hybrid” multi-stage devices.","PeriodicalId":88890,"journal":{"name":"IEEE International Vacuum Electronics Conference. International Vacuum Electronics Conference","volume":"62 12 1","pages":"13-14"},"PeriodicalIF":0.0,"publicationDate":"2014-04-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"91279414","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
Hot test of gyrotron cavity interaction using a 3D CFDTD PIC method 利用三维CFDTD PIC方法进行回旋管腔相互作用热测试
IEEE International Vacuum Electronics Conference. International Vacuum Electronics Conference Pub Date : 2014-04-22 DOI: 10.1109/IVEC.2014.6857503
M. C. Lin, D. Smithe, W. Guss, R. Temkin
{"title":"Hot test of gyrotron cavity interaction using a 3D CFDTD PIC method","authors":"M. C. Lin, D. Smithe, W. Guss, R. Temkin","doi":"10.1109/IVEC.2014.6857503","DOIUrl":"https://doi.org/10.1109/IVEC.2014.6857503","url":null,"abstract":"Modeling a gyrotron cavity interaction in 3D and time-domain is very challenging due to the open-end features of cavity structure and higher-order mode excitation employed to achieve high efficiency. In this work, a 3D conformal finite-difference time-domain (CFDTD) particle-in-cell (PIC) method has been developed to perform a hot test of gyrotron cavity interaction. With a tailored gyrobeam emission, not only forward wave but also backward wave interactions have been observed in an MIT gyrotron cavity, consistent with a recent experiment at MIT. Our preliminary results show that the 3D CFDTD PIC method could provide an alternative modeling tool for studying the gyrotron cavity interaction for further improving efficiency and studying mode competition.","PeriodicalId":88890,"journal":{"name":"IEEE International Vacuum Electronics Conference. International Vacuum Electronics Conference","volume":"86 1","pages":"87-88"},"PeriodicalIF":0.0,"publicationDate":"2014-04-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"83699970","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
Micro Barkhausen-Kurz oscillators for terahertz integrated systems 太赫兹集成系统的微型巴克豪森-库尔兹振荡器
IEEE International Vacuum Electronics Conference. International Vacuum Electronics Conference Pub Date : 2014-04-22 DOI: 10.1109/IVEC.2014.6857494
A. Dixit, J. P. Snapp, T. Lee
{"title":"Micro Barkhausen-Kurz oscillators for terahertz integrated systems","authors":"A. Dixit, J. P. Snapp, T. Lee","doi":"10.1109/IVEC.2014.6857494","DOIUrl":"https://doi.org/10.1109/IVEC.2014.6857494","url":null,"abstract":"We propose micro Barkhausen-Kurz oscillators suitable for operation at THz frequencies and can be fabricated along-side CMOS or III-V ICs. Electron dynamics will be described along with theoretical and particle-in-cell simulation results. Device performance and limitations will be discussed with emphasis on scaling of properties with frequency. Preliminary cathode and repeller structures made on silicon will be shown.","PeriodicalId":88890,"journal":{"name":"IEEE International Vacuum Electronics Conference. International Vacuum Electronics Conference","volume":"23 1","pages":"69-70"},"PeriodicalIF":0.0,"publicationDate":"2014-04-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"87076384","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
Analysis of a planar inter-digital slow-wave structure 平面数字间慢波结构分析
IEEE International Vacuum Electronics Conference. International Vacuum Electronics Conference Pub Date : 2014-04-22 DOI: 10.1109/IVEC.2014.6857561
M. Sumathy, L. Christie, S. K. Datta, L. Kumar
{"title":"Analysis of a planar inter-digital slow-wave structure","authors":"M. Sumathy, L. Christie, S. K. Datta, L. Kumar","doi":"10.1109/IVEC.2014.6857561","DOIUrl":"https://doi.org/10.1109/IVEC.2014.6857561","url":null,"abstract":"A planar inter-digital type slow-wave structures is proposed for forward first-space-harmonic operation. The proposed structure supports hybrid (even and odd) modes. The analysis of the proposed structures is carried out using CST-Microwave studio for the mode analysis and slow-wave characteristics (dispersion and interaction impedance characteristics) at W-band. Fabrication and cold test measurement of the structure is in progress and the measured results will be presented at the time of conference.","PeriodicalId":88890,"journal":{"name":"IEEE International Vacuum Electronics Conference. International Vacuum Electronics Conference","volume":"10 1","pages":"203-204"},"PeriodicalIF":0.0,"publicationDate":"2014-04-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"84691101","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
System study using injection phase locked magnetron as an alternative source for superconducting radio frequency accelerator 注入锁相磁控管作为超导射频加速器替代源的系统研究
IEEE International Vacuum Electronics Conference. International Vacuum Electronics Conference Pub Date : 2014-04-22 DOI: 10.1109/IVEC.2014.6857680
Haipeng Wang, T. Plawski, R. Rimmer, A. Dexter, I. Tahir, M. Neubauer, A. Dudas
{"title":"System study using injection phase locked magnetron as an alternative source for superconducting radio frequency accelerator","authors":"Haipeng Wang, T. Plawski, R. Rimmer, A. Dexter, I. Tahir, M. Neubauer, A. Dudas","doi":"10.1109/IVEC.2014.6857680","DOIUrl":"https://doi.org/10.1109/IVEC.2014.6857680","url":null,"abstract":"As a drop-in replacement of Continuous Electron Beam Accelerator Facility (CEBAF) 5kW CW klystron system, a 1497MHz, high efficiency magnetron using injection phase lock [1] and slow amplitude variation using magnetic field trimming and anode voltage modulation has been studied systematically using MatLab/Simulink simulations. The magnetron model is based the characteristics of experiment and manufacture chart on a 2.45GHz cooker type CW magnetron. To achieve high performance of a superconducting radio frequency (SRF) acceleration cavity with an electron beam loading, the magnetron's low level radio frequency (LLRF) control has been studied in two lock loops. In the frequency lock loop, the characterized anode V-I curve, output power (the tube electronic efficiency) and frequency dependence to the anode current (pushing by Vaughan model) and the Rieke diagram (frequency pulling by the reactive load) are simulated. The magnetic field B and anode voltage V in Hartree condition are satisfied and the effect of filament heater power to the frequency lock is also included. In the phase lock loop, the Adler equation governing injection phase stability is included in this study. The control of the magnet trim-coil power-supply and of the anode voltage modulation-switching power-supply has been also simulated to achieve the amplitude modulation. The result of linear responses to the amplitude and phase of SRF cavity will be presented in this paper. The requirement of LLRF control will be given by this result.","PeriodicalId":88890,"journal":{"name":"IEEE International Vacuum Electronics Conference. International Vacuum Electronics Conference","volume":"101 1","pages":"443-444"},"PeriodicalIF":0.0,"publicationDate":"2014-04-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"84827838","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: 5
Calculation and comparison for the axial electric field profile in multi-gap Hughes-type coupled cavity chain 多间隙休斯型耦合腔链轴向电场分布的计算与比较
IEEE International Vacuum Electronics Conference. International Vacuum Electronics Conference Pub Date : 2014-04-22 DOI: 10.1109/IVEC.2014.6857708
Haiyu Zhang, Jirun Luo, Mingkui Zhu, Wei Guo
{"title":"Calculation and comparison for the axial electric field profile in multi-gap Hughes-type coupled cavity chain","authors":"Haiyu Zhang, Jirun Luo, Mingkui Zhu, Wei Guo","doi":"10.1109/IVEC.2014.6857708","DOIUrl":"https://doi.org/10.1109/IVEC.2014.6857708","url":null,"abstract":"Considering the coupling of electric field between the adjacent cavities of multi-gap Hughes-type coupled cavity chain, the axial electric field profile is analytically expressed by hyperbolic secant function and calculated by polynomial curve-fitting program to decrease the calculating error in this abstract. The analytic results are in good agreement with those calculated by CST-MWS code.","PeriodicalId":88890,"journal":{"name":"IEEE International Vacuum Electronics Conference. International Vacuum Electronics Conference","volume":"12 1","pages":"499-500"},"PeriodicalIF":0.0,"publicationDate":"2014-04-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"89368562","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
Flexibility performance in advanced Ka-band multibeam satellites 先进ka波段多波束卫星的柔性性能
IEEE International Vacuum Electronics Conference. International Vacuum Electronics Conference Pub Date : 2014-04-22 DOI: 10.1109/IVEC.2014.6857482
Juan Lizarraga, P. Angeletti, N. Alagha, M. Aloisio
{"title":"Flexibility performance in advanced Ka-band multibeam satellites","authors":"Juan Lizarraga, P. Angeletti, N. Alagha, M. Aloisio","doi":"10.1109/IVEC.2014.6857482","DOIUrl":"https://doi.org/10.1109/IVEC.2014.6857482","url":null,"abstract":"Multibeam satellite systems are typically designed assuming a uniform traffic demand, while, in reality, the uncertainty of the actual traffic creates load imbalances among different beams. In this case, the global capacity balance yields to a paradox: the system is not able to meet the demand while some of the available capacity is left unused. Multibeam systems can mitigate this effect by embarking flexible payloads that allow to allocate the available resources on demand, depending on the actual traffic conditions.","PeriodicalId":88890,"journal":{"name":"IEEE International Vacuum Electronics Conference. International Vacuum Electronics Conference","volume":"2 1","pages":"45-46"},"PeriodicalIF":0.0,"publicationDate":"2014-04-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"87546736","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: 13
Development of an X-band 800W pulsed mini-TWT for active phased array radar modules 用于有源相控阵雷达模块的x波段800W脉冲微型行波管的研制
IEEE International Vacuum Electronics Conference. International Vacuum Electronics Conference Pub Date : 2014-04-22 DOI: 10.1109/IVEC.2014.6857509
T. Munehiro, Junichi Kobayashi, J. Matsuoka, Mitsuru Yoshida, Satoshi Kainuma, Y. Ueda
{"title":"Development of an X-band 800W pulsed mini-TWT for active phased array radar modules","authors":"T. Munehiro, Junichi Kobayashi, J. Matsuoka, Mitsuru Yoshida, Satoshi Kainuma, Y. Ueda","doi":"10.1109/IVEC.2014.6857509","DOIUrl":"https://doi.org/10.1109/IVEC.2014.6857509","url":null,"abstract":"This paper describes our successful development of a mini-TWT (miniature travelling wave tube) for active phased array radar systems delivering high RF output power of more than 800W over the frequency range of 9 to 10GHz with a high overall efficiency of 46%. This mini-TWT achieves compact size in a package of 20mm(W) × 20mm(H) × 195mm(L) with a lightweight of 0.4kg.","PeriodicalId":88890,"journal":{"name":"IEEE International Vacuum Electronics Conference. International Vacuum Electronics Conference","volume":"66 1","pages":"99-100"},"PeriodicalIF":0.0,"publicationDate":"2014-04-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"85628139","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: 6
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