行波管中多级降压收集极效率评估的研究

李飞; 肖刘; 刘濮鲲; 袁广江; 易红霞; 万晓声

doi:10.7498/aps.61.102901

摘要

在行波管中,多级降压收集极(MDC)效率由于其与总效率的关系密切而显得非常重要. 而在设计MDC之前对其效率和行波管的总效率进行准确的评估可以把握管子的整体性能, 并为相关软件的开发提供理论指导,因而对MDC的优化和行波管总效率的提高具有十分重要的意义. 虽然Kosmahl在1980年就给出了MDC的效率评估公式,但其预测值比实测值偏高较多, 因而需要更为准确的评估公式.本文首先引入耗散公差的概念, 然后建立作用完电子注等差三角能量分布模型推导了MDC效率评估的公式,与Kosmahl给出的预测相比, 新公式的估计结果更接近实测值.最后根据MDC效率最高和各个电极上耗散能量最低这两个极值条件, 给出了MDC最佳电极级数的选取公式,其预测结果合理而且准确.

关键词:

Abstract

In a traveling wave tube, efficiency of multistage depressed collector (MDC) is very important because it is closely related to total efficiency. The correct estimate of the efficiencies of MDC and TWT can help us predict TWT's whole function and provide a theoretical guidance for developing pertinent software, which therefore plays an important role in optimizing MDC and improving TWT total efficiency. Although formula for predicting MDC efficiency was given by Kosmahl in 1980, whose estimation is much higher than the measured value, a more accurate formula is still necessary. Firstly, the concept of dissipated common difference is used in this paper to estimate the efficiencies of MDC and TWT and then new estimate formulas are obtained by making a model of arithmetic triangular energy distribution for spent beam. It is expected that new formulas give predictions closer to the measured values than the Kosmahl's evaluation. Finally, expression for optimal MDC electrodes is given on the basis of two extreme values, i.e., maximal MDC efficiency and minimal total dissipated energies on all electrodes. The prediction from the expression is reasonable and accurate.

Keywords:

multistage depressed collector /
dissipated common difference /
arithmetic triangular energy distribution /
efficiency

作者及机构信息

1.
中国科学院电子学研究所,中国科学院高功率微波源与技术重点实验室, 北京 100190;

2.
中国科学院研究生院, 北京 100049

基金项目: 国家自然科学基金重点项目(批准号: 60931001)和国家自然科学基金青年科学基金项目 (批准号: 60801030, 60871054)资助的课题.

Authors and contacts

1.
Key Laboratory of High Power Microwave Sources and Technologies, Institute of Electronics, Chinese Academy of Science, Beijing 100190, China;

2.
Graduate University of Chinese Academy of Science, Beijing 100190, China

Funds: Project supported by the Key Program of the National Natural Science Foundation of China (Grant No. 60931001) and the Young Scientists Fund of the National Natural Science Foundation of China (Grant Nos. 60801030, 60871054).

参考文献

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[19]	Dunn D A, Borghi R P, Wadat G 1960 IRE Trans. Electron Dev. 7 262
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[24]	Dayton J A, Kosmahl H G, Ramins P, Stankiewicz N 1981 IEEE Trans. Electron Dev. 28 1480
[25]	Kosmahl H G 1979 IEEE Trans. Electron Dev. 26 156
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[27]	Santra M, Kumar L, Balakrishnan J 2011 IEEE Trans. Electron. Dev. 58 4087

施引文献

[1]	Xie H Q, Li C Y, Yan Y, Liu S G 2003 Acta Phys. Sin. 52 914 (in Chinese) [谢鸿全, 李承跃, 鄢扬, 刘盛纲 2003 52 914]
[2]	Gao P, Booske J H, Yang Z H, Li B, Xu L, He J, Gong Y B, Tian Z 2010 Acta Phys. Sin. 59 8484 (in Chinese) [高鹏, Booske John H, 杨中海, 李斌, 徐立, 何俊, 宫玉彬, 田忠 2010 59 8484]
[3]	Peng W F, Hu Y L, Yang Z H, Li J Q, Lu Q R, Li B 2011 Chin. Phys. B 20 028401
[4]	Duan Z Y, Gong Y B, Wei Y Y, Wang W X 2008 Chin. Phys. B 17 2484
[5]	Chernin D, Antonsen T M, Levush J B, Whaley D R 2001 IEEE Trans. Electron. Dev. 48 3
[6]	Lai G J, Liu P K 2006 Acta Phys. Sin. 55 321 (in Chinese) [来国军, 刘濮鲲 2006 55 321]
[7]	Xiao L, Su X B, Liu P K 2006 Acta Phys. Sin. 55 5150 (in Chinese) [肖刘, 苏小保, 刘濮鲲 2006 55 5150]
[8]	Chua C, Tsai J M, Aditya S, Tang M, Ho S W, Shen Z X, Wang L 2011 IEEE Trans. Electron. Dev. 58 4098
[9]	Li F, Xiao L, Liu P K, Yi H X, Wan X S 2011 Acta Phys. Sin. 60 097901 (in Chinese) [李飞, 肖刘, 刘濮鲲, 易红霞, 万晓声 2011 60 097901]
[10]	Peng W F, Yang Z H, Hu Y L, Li J Q, Lu Q R, Li B, 2011 Chin. Phys. B 20 078401
[11]	Komm D S, Benton R T, Limburg H C, Menninger W L, Zhai X L 2001 IEEE Trans. Electron. Dev. 48 174
[12]	Ramins P, Fox T A August 1981 NASA Technical Paper-1832
[13]	Yi H X, Xiao L, Liu P K, Hao B L, Li F, Li G C 2011 Acta Phys. Sin. 60 068403 (in Chinese) [易红霞, 肖刘, 刘濮鲲, 郝保良, 李飞, 李国超 2011 60 068403]
[14]	Hu Y L, Yang Z H, Li B, Li J Q, Huang T, Jin X L, Zhu X F, Liang X P 2010 Acta Phys. Sin. 59 5439 (in Chinese) [胡玉禄, 杨中海, 李斌, 李建清, 黄桃, 金晓林, 朱小芳, 梁献普 2010 59 5439]
[15]	Ramins P 1984 NASA Technical Paper-2248
[16]	Kosmahl H G 1971 NASA Tech. Note TN-D-6093
[17]	Hechtel J R 1977 IEEE Trans. Electron Dev. 24 45
[18]	Okoshi T 1972 IEEE Trans. Electron Dev. 19 104
[19]	Dunn D A, Borghi R P, Wadat G 1960 IRE Trans. Electron Dev. 7 262
[20]	Chen T S, Wolkstein H J, Mcmurrough R W 1963 IEEE Trans. Electron Dev. 10 243
[21]	Kosmahl H G 1982 Proc. IEEE 70 1325
[22]	Kosmahl H G 1980 IEEE Trans. Electron Dev. 27 526
[23]	Guo K K 2008 Traveling wave tubes development technology (Beijing: Publishing House of Electronics Industry) (in Chinese) [郭开周 2008 行波管研制技术(北京: 电子工业出版社)]
[24]	Dayton J A, Kosmahl H G, Ramins P, Stankiewicz N 1981 IEEE Trans. Electron Dev. 28 1480
[25]	Kosmahl H G 1979 IEEE Trans. Electron Dev. 26 156
[26]	Du C H, Liu P K, Xue Q Z 2010 Acta Phys. Sin. 59 4612 (in Chinese) [杜朝海, 刘濮鲲, 薛谦忠 2010 59 4612]
[27]	Santra M, Kumar L, Balakrishnan J 2011 IEEE Trans. Electron. Dev. 58 4087

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