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Multi-Frequency Recirculating Planar Magnetrons 多频循环平面磁控管
IEEE International Vacuum Electronics Conference. International Vacuum Electronics Conference Pub Date : 2016-08-18 DOI: 10.1063/1.4961070
G. Greening, M. Franzi, R. Gilgenbach, Y. Lau, N. Jordan
{"title":"Multi-Frequency Recirculating Planar Magnetrons","authors":"G. Greening, M. Franzi, R. Gilgenbach, Y. Lau, N. Jordan","doi":"10.1063/1.4961070","DOIUrl":"https://doi.org/10.1063/1.4961070","url":null,"abstract":"The Multi-Frequency Recirculating Planar Magnetron (MFRPM) is a type of Recirculating Planar Magnetron (RPM) designed for tunable or simultaneous oscillation at more than one primary frequency. Like the RPM, the MFRPM is a crossed-field, high power microwave (HPM) source that integrates the design advantages of the RPM with the added benefit of producing multiple frequencies using a single HPM device. Design of an L-S-band prototype is underway for a 0.2 T axial magnetic field and a -300 kV voltage pulse.","PeriodicalId":88890,"journal":{"name":"IEEE International Vacuum Electronics Conference. International Vacuum Electronics Conference","volume":"2 1","pages":"407-408"},"PeriodicalIF":0.0,"publicationDate":"2016-08-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"86046530","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: 3
MW-level 0.34 THz wave radiation from slow-wave device with relativistic hollow thin-wall electron beam 具有相对论性空心薄壁电子束的慢波装置产生的毫瓦级0.34太赫兹波辐射
IEEE International Vacuum Electronics Conference. International Vacuum Electronics Conference Pub Date : 2015-04-27 DOI: 10.1109/IVEC.2015.7223830
Guang-qiang Wang, Jianguo Wang, Shuang Li, Peng Zeng
{"title":"MW-level 0.34 THz wave radiation from slow-wave device with relativistic hollow thin-wall electron beam","authors":"Guang-qiang Wang, Jianguo Wang, Shuang Li, Peng Zeng","doi":"10.1109/IVEC.2015.7223830","DOIUrl":"https://doi.org/10.1109/IVEC.2015.7223830","url":null,"abstract":"A rectangularly corrugated relativistic slow-wave oscillator is designed to generate the MW-level 0.34 THz wave radiation. By using large overmoded ratio the manufacturing difficulty is efficiently decreased, while relativistic hollow thin-wall electron beam is adopted to suppress the mode competition. Simulations based on a 2.5-D particle-in-cell (PIC) code UNIPIC predict an output power up to 131MW at the frequency of 0.34 THz with conversion efficiency almost 10.8% when beam voltage is about 382kV, current 3.18kA, and the confined magnetic field 5.2T.","PeriodicalId":88890,"journal":{"name":"IEEE International Vacuum Electronics Conference. International Vacuum Electronics Conference","volume":"95 1","pages":"1-2"},"PeriodicalIF":0.0,"publicationDate":"2015-04-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"80851270","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 optimization design for a diamond window in W band TWT W波段行波管菱形窗口的优化设计
IEEE International Vacuum Electronics Conference. International Vacuum Electronics Conference Pub Date : 2015-04-27 DOI: 10.1109/IVEC.2015.7223993
Z. Song, Zhiqiang Gao, Pengchao Huang, Zhilong Zhou, Yingbo Liu, Hui Wang, Qiang Liu, Xingda Lu
{"title":"The optimization design for a diamond window in W band TWT","authors":"Z. Song, Zhiqiang Gao, Pengchao Huang, Zhilong Zhou, Yingbo Liu, Hui Wang, Qiang Liu, Xingda Lu","doi":"10.1109/IVEC.2015.7223993","DOIUrl":"https://doi.org/10.1109/IVEC.2015.7223993","url":null,"abstract":"This paper introduces the design of a diamond window. By using CST simulation software, calculation results are given. This kind of window has important significances for the characteristic improvement of W band TWT.","PeriodicalId":88890,"journal":{"name":"IEEE International Vacuum Electronics Conference. International Vacuum Electronics Conference","volume":"52 1","pages":"1-2"},"PeriodicalIF":0.0,"publicationDate":"2015-04-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"91006816","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
Study on high-frequency dielectric performance of complex ceramics with microwave absorbing characteristics 具有微波吸收特性的复合陶瓷高频介电性能研究
IEEE International Vacuum Electronics Conference. International Vacuum Electronics Conference Pub Date : 2015-04-27 DOI: 10.1109/IVEC.2015.7223826
Yan-ling Yang, Yanping Lu, Shuai Wang
{"title":"Study on high-frequency dielectric performance of complex ceramics with microwave absorbing characteristics","authors":"Yan-ling Yang, Yanping Lu, Shuai Wang","doi":"10.1109/IVEC.2015.7223826","DOIUrl":"https://doi.org/10.1109/IVEC.2015.7223826","url":null,"abstract":"In this paper, dielectric-metal, dielectric semiconductor and dielectric - metal - semiconductor microwave absorbing ceramics were fabricated. The mechanism of microwave loss in complex microwave absorbing ceramics was studied through analyzing high-frequency dielectric properties.","PeriodicalId":88890,"journal":{"name":"IEEE International Vacuum Electronics Conference. International Vacuum Electronics Conference","volume":"67 1","pages":"1-2"},"PeriodicalIF":0.0,"publicationDate":"2015-04-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"79156529","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
High power and efficiency power combining of space TWTAs with waveguide magic-T for Satellite communication 用于卫星通信的空间twta与波导magic-T的大功率高效功率组合
IEEE International Vacuum Electronics Conference. International Vacuum Electronics Conference Pub Date : 2015-04-27 DOI: 10.1109/IVEC.2015.7223941
Yawei Liu, Xiao-bao Su
{"title":"High power and efficiency power combining of space TWTAs with waveguide magic-T for Satellite communication","authors":"Yawei Liu, Xiao-bao Su","doi":"10.1109/IVEC.2015.7223941","DOIUrl":"https://doi.org/10.1109/IVEC.2015.7223941","url":null,"abstract":"A high efficiency power combining demonstration is presented in this paper of 2 X-band TWTAs based on magic-T corporate combiner. A low loss, amplitude and phase balanced, high isolation and power waveguide magic-T combiner is designed. Power combining efficiencies of greater than 90% and output power of more than 85W over a 0.7GHz frequency band are successfully demonstrated by introducing phase shifter and variable attenuator within input end. Such combiner can also be taken as an element within a corporate combining architecture of more TWTAs for much high efficiency and power outputting for satellite communication.","PeriodicalId":88890,"journal":{"name":"IEEE International Vacuum Electronics Conference. International Vacuum Electronics Conference","volume":"25 1","pages":"1-2"},"PeriodicalIF":0.0,"publicationDate":"2015-04-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"85360228","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
Experimental study of thermal contact resistance between AlN and Kovar alloy by laser flash method 激光闪蒸法研究AlN与Kovar合金的热接触电阻
IEEE International Vacuum Electronics Conference. International Vacuum Electronics Conference Pub Date : 2015-04-27 DOI: 10.1109/IVEC.2015.7223827
Lin Zhang, Yan-ping Lu, B. Du
{"title":"Experimental study of thermal contact resistance between AlN and Kovar alloy by laser flash method","authors":"Lin Zhang, Yan-ping Lu, B. Du","doi":"10.1109/IVEC.2015.7223827","DOIUrl":"https://doi.org/10.1109/IVEC.2015.7223827","url":null,"abstract":"In this paper, the thermal contact resistance of solid interface between AlN and Kovar alloy and some main influencing factors of it were investigated. The thermal contact resistance of the interface between AlN ceramic and Kovar alloy decreases with increasing temperature and increasing pressure respectively, and thermal contact resistance between the unpolished samples is higher than that between polished samples. A function relation between pressure P applied on the AlN ceramic and Kovar alloy interface and the thermal contact resistance R is also presented.","PeriodicalId":88890,"journal":{"name":"IEEE International Vacuum Electronics Conference. International Vacuum Electronics Conference","volume":"53 1","pages":"1-2"},"PeriodicalIF":0.0,"publicationDate":"2015-04-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"88534735","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 the resonator in a 110-GHz Gyrotron 110 ghz回旋管谐振器的设计
IEEE International Vacuum Electronics Conference. International Vacuum Electronics Conference Pub Date : 2015-04-27 DOI: 10.1109/IVEC.2015.7223973
Ying-hui Liu, Qiao Liu, X. Niu, Hui Wang, Fei Liu, Li-xuan Wang
{"title":"Design of the resonator in a 110-GHz Gyrotron","authors":"Ying-hui Liu, Qiao Liu, X. Niu, Hui Wang, Fei Liu, Li-xuan Wang","doi":"10.1109/IVEC.2015.7223973","DOIUrl":"https://doi.org/10.1109/IVEC.2015.7223973","url":null,"abstract":"On the basis of electron cyclotron resonance maser theory and generalized transmission line theory, we compiled programs to analyze the resonant cavity in a 110 GHz gyrotron. By calculating and studying different gradual-varying and line-joint resonant cavities, we designed a gradually tapered resonator for a 110 GHz Gyrotron, which is good at suppressing the parasitic modes, improving the purity of the operating mode and the efficiency of the beam-wave interaction.","PeriodicalId":88890,"journal":{"name":"IEEE International Vacuum Electronics Conference. International Vacuum Electronics Conference","volume":"10 1","pages":"1-2"},"PeriodicalIF":0.0,"publicationDate":"2015-04-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"74200375","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
Microwave chemistry technology in coal desulfurization 微波化学技术在煤脱硫中的应用
IEEE International Vacuum Electronics Conference. International Vacuum Electronics Conference Pub Date : 2015-04-27 DOI: 10.1109/IVEC.2015.7223989
Wei Yang
{"title":"Microwave chemistry technology in coal desulfurization","authors":"Wei Yang","doi":"10.1109/IVEC.2015.7223989","DOIUrl":"https://doi.org/10.1109/IVEC.2015.7223989","url":null,"abstract":"This paper presents the application of microwave chemistry technology to coal desulfurization. The effects of the dosage and the proportion of oxidant, microwave power and radiation time, as well as coal particle size on the desulfurization process are investigated. Optimizing technological route has been obtained. They are: microwave power: 900W, microwave radiation time 60 second, the best dosage of oxidant: 50mL, oxidizer volume ratio:1∶1, coal particle size: 1000µm. Infrared spectra shows that the coal sample after such treatment has no change in its chemical and internal structure.","PeriodicalId":88890,"journal":{"name":"IEEE International Vacuum Electronics Conference. International Vacuum Electronics Conference","volume":"21 1","pages":"1-2"},"PeriodicalIF":0.0,"publicationDate":"2015-04-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"74930627","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
Microwave treatment technology for oil contaminated drill cuttings 石油污染岩屑的微波处理技术
IEEE International Vacuum Electronics Conference. International Vacuum Electronics Conference Pub Date : 2015-04-27 DOI: 10.1109/IVEC.2015.7223988
Hui Zhang, H. Wei, Qi Yang, J. Xiao, Youchun Liu
{"title":"Microwave treatment technology for oil contaminated drill cuttings","authors":"Hui Zhang, H. Wei, Qi Yang, J. Xiao, Youchun Liu","doi":"10.1109/IVEC.2015.7223988","DOIUrl":"https://doi.org/10.1109/IVEC.2015.7223988","url":null,"abstract":"This paper introduces the microwave treatment method for the oil contaminated drill cuttings. The method could lead the oil content to reduce to less than 1%, and the oil recovery rate could reach 51.53%. A large amount of oil and water mixed vapor are separated from the cuttings when they are heated to 125°C. Therefore, the oil in the cuttings is carried over by water steam and removed at lower temperatures.","PeriodicalId":88890,"journal":{"name":"IEEE International Vacuum Electronics Conference. International Vacuum Electronics Conference","volume":"120 1","pages":"1-2"},"PeriodicalIF":0.0,"publicationDate":"2015-04-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"86696448","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
Quasi-optical spatial power combining millimeter wave high power traveling wave tubes 准光空间功率组合毫米波高功率行波管
IEEE International Vacuum Electronics Conference. International Vacuum Electronics Conference Pub Date : 2014-07-17 DOI: 10.1109/IVEC.2014.6857511
R. Hwu, J. Ren, D. Kress, L. Sadwick
{"title":"Quasi-optical spatial power combining millimeter wave high power traveling wave tubes","authors":"R. Hwu, J. Ren, D. Kress, L. Sadwick","doi":"10.1109/IVEC.2014.6857511","DOIUrl":"https://doi.org/10.1109/IVEC.2014.6857511","url":null,"abstract":"A quasi optical spatial power combining traveling wave tube has been successfully developed and used to increase the output power from solid state devices (as the driver). We report here the development of novel quasi optical spatial power combining for vacuum electronic devices and, more specifically, for traveling wave tubes (TWTs) to increase output power at millimeter waves (MMW) and higher frequencies. A quasi optical spatial power combining array of five complete plus two half slow wave structures (SWSs) was developed at W-band (center frequency 95 GHz) to achieve a combined output power of over 1000 Watts. These SWSs are arranged into a linear array. A sheet beam electron gun and a single stage collector were designed and implemented to mate to the SWSs for this W-band high power TWT.","PeriodicalId":88890,"journal":{"name":"IEEE International Vacuum Electronics Conference. International Vacuum Electronics Conference","volume":"90 1","pages":"103-104"},"PeriodicalIF":0.0,"publicationDate":"2014-07-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"80305498","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
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