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A nonlinear model for the numerical simulation of coupled-cavity traveling wave tube is described. The model is based on the Curnow equivalent circuit from which the matrix equations for the fields of any single cavity can be obtained. And the model can be divided into the matrix equations, the motion equations and the space-charge field equations, in which the sever, dynamic tapering in the circuit and the multiple-frequency signal amplification can be also considered. The simulation is used to analyze the nonlinear AM-PM distortion and the intermodulation products of a coupled cavity TWT whose working frequencies range from 59 GHz to 64 GHz. And the analysis of the saturated output power within the frequency band is also included. Comparing the simulation results with the measurements, the percentage difference between the calculation results and the test results is less than 5%.
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Keywords:
- coupled cavity TWTs /
- beam-wave interaction /
- nonlinear theory /
- equivalent circuit
[1] Vaughan J R M 1975 IEEE Trans. Electron Oct. 22 880
[2] Freund H P, Antonsen T M Jr, Zaidman E G 2002 Phys. Plasmas 30 1024
[3] Chernin D, Antonsen T M Jr, Chernyavskiy I A, Vlasov A N, Levush B, Begum R, Legarra J 2011 IEEE Trans. Electron Apr. 4 1229
[4] Xiong X Z, Li S, Li J Y 1995 Journal of UESTC of China 24 619 (in Chinese) [熊祥正, 李慎, 李家胤 1995 电子科技大学学报 24 619]
[5] Curnow H J 1965 IEEE Trans Microwave 13 671
[6] Qiu W, Lee H J, Verboncoeur J P, Birdsall 2001 IEEE Trans. Plasma Sci. 29 911
[7] Dialetis D, Chernin D P, Antonsen T M Jr, Chang C L, Levush B 2005 IEEE Trans. Electron May. 52 774
[8] Kosmahl H G, Branch G M Jr 1973 IEEE Trans. Electron Dev. 20 621
[9] Chernin D P, Antonsen T M Jr 2001 IEEE Trans. Electron Dev. 48 3
[10] Chernin D P, Antonsen T M Jr, Levush B 2003 IEEE Trans. Electron Dev.2540
[11] Kory C L1996 IEEE Trans. Electron Dev. 43 1317
[12] Wilson J D, Kory C L 1995 IEEE Trans. Electron Dev. 42 2015
[13] Xiao L 2006 Ph. D. Dissertation (Beijing: Institute of Electronics, Chinese Academy of Science) (in Chinese) [肖刘 2006 博士学位论文(北京:中国科学院电子学研究所)]
[14] Peng W F, Hu Y L, Yang Z H, Li J Q, Lu Q R, Li B 2010 Acta Phys. Sin. 59 8478 (in Chinese) [彭维峰, 胡玉禄, 杨中海, 李建清, 陆麒如, 李斌 2010 59 8478]
[15] Peng W F, Hu Y L, Yang Z H, Li J Q, Lu Q R, Li B 2011 Chin Phys. B 20 078401
[16] Peng W F, Hu Y L, Yang Z H, Li J Q, Lu Q R, Li B 2011 Chin Phys. B 20 028401
[17] Hu Y L, Yang Z H, Li J Q, Li B, Gao P, Jin X L 2009 Acta Phys. Sin. 58 6665 (in Chinese) [胡玉禄, 杨中海, 李建清, 李斌, 高鹏, 金晓林 2009 58 6665]
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[1] Vaughan J R M 1975 IEEE Trans. Electron Oct. 22 880
[2] Freund H P, Antonsen T M Jr, Zaidman E G 2002 Phys. Plasmas 30 1024
[3] Chernin D, Antonsen T M Jr, Chernyavskiy I A, Vlasov A N, Levush B, Begum R, Legarra J 2011 IEEE Trans. Electron Apr. 4 1229
[4] Xiong X Z, Li S, Li J Y 1995 Journal of UESTC of China 24 619 (in Chinese) [熊祥正, 李慎, 李家胤 1995 电子科技大学学报 24 619]
[5] Curnow H J 1965 IEEE Trans Microwave 13 671
[6] Qiu W, Lee H J, Verboncoeur J P, Birdsall 2001 IEEE Trans. Plasma Sci. 29 911
[7] Dialetis D, Chernin D P, Antonsen T M Jr, Chang C L, Levush B 2005 IEEE Trans. Electron May. 52 774
[8] Kosmahl H G, Branch G M Jr 1973 IEEE Trans. Electron Dev. 20 621
[9] Chernin D P, Antonsen T M Jr 2001 IEEE Trans. Electron Dev. 48 3
[10] Chernin D P, Antonsen T M Jr, Levush B 2003 IEEE Trans. Electron Dev.2540
[11] Kory C L1996 IEEE Trans. Electron Dev. 43 1317
[12] Wilson J D, Kory C L 1995 IEEE Trans. Electron Dev. 42 2015
[13] Xiao L 2006 Ph. D. Dissertation (Beijing: Institute of Electronics, Chinese Academy of Science) (in Chinese) [肖刘 2006 博士学位论文(北京:中国科学院电子学研究所)]
[14] Peng W F, Hu Y L, Yang Z H, Li J Q, Lu Q R, Li B 2010 Acta Phys. Sin. 59 8478 (in Chinese) [彭维峰, 胡玉禄, 杨中海, 李建清, 陆麒如, 李斌 2010 59 8478]
[15] Peng W F, Hu Y L, Yang Z H, Li J Q, Lu Q R, Li B 2011 Chin Phys. B 20 078401
[16] Peng W F, Hu Y L, Yang Z H, Li J Q, Lu Q R, Li B 2011 Chin Phys. B 20 028401
[17] Hu Y L, Yang Z H, Li J Q, Li B, Gao P, Jin X L 2009 Acta Phys. Sin. 58 6665 (in Chinese) [胡玉禄, 杨中海, 李建清, 李斌, 高鹏, 金晓林 2009 58 6665]
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