| Dielectric effect on the rf characteristics of a helical groove travelling wave tube |
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| 作者姓名： | 魏彦玉 王文祥 孙嘉鸿 刘盛纲 Baofu Ji Gun-Sik Park |
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| 作者单位： | National Key Laboratory of High Power Vacuum Electronics, University of Electronic Science and Technology of China, Chengdu 610054, China;National Key Laboratory of High Power Vacuum Electronics, University of Electronic Science and Technology of China, Chengdu 610054, China;National Key Laboratory of High Power Vacuum Electronics, University of Electronic Science and Technology of China, Chengdu 610054, China;National Key Laboratory of High Power Vacuum Electronics, University of Electronic Science and Technology of China, Chengdu 610054, China;National Key Laboratory of High Power Vacuum Electronics, University of Electronic Science and Technology of China, Chengdu 610054, China; Vacuum Electrophysical National Laboratory, Department of Physics, Seoul National University, Korea;Vacuum Electrophysical National Laboratory, Department of Physics, Seoul National University, Korea |
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| 基金项目： | Project supported by the Fund of the Institute of Electronics Science of the Ministry of Electron Industry (Grant No DJ3.1.1.2). |
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| 摘 要： | A new type of partial-dielectric-loaded helical groove slow-wave structure (SWS) for millimetre wave travelling wave tube (TWT） is presented in this paper.The radio-frequency characteristics including the dispersion properties,the longitudinal electric field distribution and the beam-wave coupling impedance of this structure are analysed.The results show that the dispersion of the helical groove circuit is weakened,the phase velocity is reduced and the position of the maximum Ez is moved from the mouth to the inside of the groove after partially filling the dielectric materials in the helical groove SWS.Therefore,the dielectric-loaded helical groove SWS is suitable for a multi-beam TWT with broad band and high gain.
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| 关 键 词： | 行波管 慢波结构 介电效应 |
| 收稿时间： | 2001-02-14 |
Dielectric effect on the rf characteristics of a helical groove travelling wave tube |
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| Wei Yan-Yu,Wang Wen-Xiang,Sun Jia-Hong,Liu Sheng-Gang,Baofu Jia and Gun-Sik Park.Dielectric effect on the rf characteristics of a helical groove travelling wave tube[J].Chinese Physics B,2002,11(3):277-281. |
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| Authors: | Wei Yan-Yu Wang Wen-Xiang Sun Jia-Hong Liu Sheng-Gang Baofu Jia and Gun-Sik Park |
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| Affiliation: | National Key Laboratory of High Power Vacuum Electronics, University of Electronic Science and Technology of China, Chengdu 610054, China; National Key Laboratory of High Power Vacuum Electronics, University of Electronic Science and Technology of China, Chengdu 610054, China; Vacuum Electrophysical National Laboratory, Department of Physics, Seoul National University, Korea; Vacuum Electrophysical National Laboratory, Department of Physics, Seoul National University, Korea |
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| Abstract: | A new type of partial-dielectric-loaded helical groove slow-wave structure (SWS) for millimetre wave travelling wave tube (TWT) is presented in this paper. The radio-frequency characteristics including the dispersion properties, the longitudinal electric field distribution and the beam-wave coupling impedance of this structure are analysed. The results show that the dispersion of the helical groove circuit is weakened, the phase velocity is reduced and the position of the maximum Ez is moved from the mouth to the inside of the groove after partially filling the dielectric materials in the helical groove SWS. Therefore, the dielectric-loaded helical groove SWS is suitable for a multi-beam TWT with broad band and high gain. |
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| Keywords: | dielectric-loading helical groove waveguide slow wave structure travelling wave tube |
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