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The folded waveguide traveling-wave tube which works at 3 mm band and above the band is limited to machining accuracy and power capacity. So a slow-wave folded waveguide structure which has a finite number of cycles and whose period can be changed nonasymptotically is proposed. Firstly, the theory for effectively increasing the high-order space harmonic coupling impedance of the structure is given. And the expressions for dispersion and coupling impedance are derived. Then through the simulation, a set of optimized design parameters is achieved. Thus the operating point of the traveling-wave tube is determined. Finally, it is simulated by MAFIA. And an effective gain is obtained. The traveling-wave tube which works at low voltage, relatively large size and relatively large period, is designed.
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Keywords:
- folded waveguide /
- varying-period /
- high-order mode /
- traveling-wave tube
[1] Zhang C Q, Gong Y B, Wei Y Y, Wang W X 2010 Acta Phys. Sin. 59 6653 (in Chinese) [张长青, 宫玉彬, 魏彦玉, 王文祥 2010 59 6653]
[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 [高鹏, Booske J H, 杨中海, 李斌, 徐立, 何俊, 宫玉彬, 田忠 2010 59 8484]
[3] Xu A, Wang W X, Wei Y Y, Gong Y B, Wang Z L, Fu C F, Yin H R 2009 Acta Phys. Sin. 58 3592 (in Chinese) [徐翱, 王文祥, 魏彦玉, 宫玉彬, 王战亮, 付成芳, 殷海荣 2009 58 3592]
[4] Xu A, Wang W X, Wei Y Y, Gong Y B 2009 Chin. Phys. 18 810
[5] Xu A, Wang W X, Wei Y Y, Gong Y B 2009 Chin. Phys. 18 1270
[6] Ganguly A K, Choi J J, Armstrong C 1995 IEEE Trans. Plasma Sci. 42 348
[7] Na Y H, Chung S W, Choi J J 2002 IEEE Trans. Plasma Sci. 30 1017
[8] Bhattacharjee S, Booske J, Kory C 2004 IEEE Trans. Plasma Sci. 32 1002
[9] Han S T, Jang K H, So J K 2004 IEEE Trans. Plasma Sci. 32 60
[10] Booske J, Converse M, Kory C 2005 IEEE Trans. Electron Dev. 52 685
[11] Kory C, Read M, Ives L 2009 IEEE Trans. Electron Dev. 56 713
[12] Comfoltey E N 2009 Ph. D. Dissertation (Cambridge: Massachusetts Institute of Technology)
[13] Carlsten B, Earley L, Haynes W 2006 IEEE Trans. Plasma Sci. 34 2393
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[1] Zhang C Q, Gong Y B, Wei Y Y, Wang W X 2010 Acta Phys. Sin. 59 6653 (in Chinese) [张长青, 宫玉彬, 魏彦玉, 王文祥 2010 59 6653]
[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 [高鹏, Booske J H, 杨中海, 李斌, 徐立, 何俊, 宫玉彬, 田忠 2010 59 8484]
[3] Xu A, Wang W X, Wei Y Y, Gong Y B, Wang Z L, Fu C F, Yin H R 2009 Acta Phys. Sin. 58 3592 (in Chinese) [徐翱, 王文祥, 魏彦玉, 宫玉彬, 王战亮, 付成芳, 殷海荣 2009 58 3592]
[4] Xu A, Wang W X, Wei Y Y, Gong Y B 2009 Chin. Phys. 18 810
[5] Xu A, Wang W X, Wei Y Y, Gong Y B 2009 Chin. Phys. 18 1270
[6] Ganguly A K, Choi J J, Armstrong C 1995 IEEE Trans. Plasma Sci. 42 348
[7] Na Y H, Chung S W, Choi J J 2002 IEEE Trans. Plasma Sci. 30 1017
[8] Bhattacharjee S, Booske J, Kory C 2004 IEEE Trans. Plasma Sci. 32 1002
[9] Han S T, Jang K H, So J K 2004 IEEE Trans. Plasma Sci. 32 60
[10] Booske J, Converse M, Kory C 2005 IEEE Trans. Electron Dev. 52 685
[11] Kory C, Read M, Ives L 2009 IEEE Trans. Electron Dev. 56 713
[12] Comfoltey E N 2009 Ph. D. Dissertation (Cambridge: Massachusetts Institute of Technology)
[13] Carlsten B, Earley L, Haynes W 2006 IEEE Trans. Plasma Sci. 34 2393
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