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The dependences of microwave efficiency and frequency on the parameters of diode in virtual cathode oscillator (VCO) are studied with particle-in-cell simulations, which further gives the effects of diode impedance on microwave efficiency and frequency. The characteristic impedance of microwave mode in virtual cathode oscillator is derived as in other high power microwave generators with slow-wave configurations and is used to analyze the optimization of diode parameters. It is shown that the optimal values of diode parameters are obtained when the diode impedance matches with the characteristic impedance of microwave mode in VCO with coaxial wave guide as well as in VCOs with other configurations. This is a good theoretical explanation for the optimization of diode in VCO and can be used to guide the design of devices.
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Keywords:
- Virtual cathode oscillator /
- Coaxial waveguide /
- Diode parameters /
- Characteristic impedance
[1] James B,Swegle J A,Schamiloglu E 2007 High Power Microwaves(Second Edition) (Taylor Francis Group,LLC)
[2] Zherlitsyn A G, Melnikov G V, Isakov P Ya 2007 Journal of communication technology and electronics 52 798
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[10] Shao H, Liu G Z, Yang Z F 2006 High Power Laser and Particle Beams 18 230(in Chinese) [邵 浩、刘国治、杨占锋 2006 强激光与粒子束 18 230]
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[18] Grigoryev V P, Koval T V 1999 IEEE International University Conference Electronics and Radiophysics of Ultra-High Frequencies 198
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[22] Liu Y,Gong H R,Wei Y Y,Gong Y B,Wang W X,Liao F J 2009 Acta Phys. Sin. 58 7845 (in Chinese) [刘 漾、巩华荣、魏彦玉、宫玉彬、王文祥、廖复疆 2009 物理学报 58 7845]
[23] [24] Dong Y H, Ding Y G, Xiao L 2005 Acta Phys. Sin. 54 5629 (in Chinese) [董玉和、丁耀根、肖 刘 2005 物理学报 54 5629]
[25] [26] Tarakanov V P User's Manual for Code KARAT 2004 Virginia: Berkeley Research Associate inc.
[27] [28] Liu J,Li Z Q,Shu T 2010 Acta Phys. Sin. 59 2629(in Chinese) [刘 静、李志强、舒 挺 2010 物理学报 59 2629]
[29] [30] [31] Liu J, Li Z Q 2008 17th International Conference On High-Power Particle Beams, Xi'an, China
[32] [33] Jiang W, Woolverton K, Dickens J, Kristiansen M 1999 IEEE Trans. Plasma Sci. 27 1538
[34] Shu T, Wang Y, Qian B L, Tan Q M 2002 Chin. Phy. Lett. 19 1646
[35] -
[1] James B,Swegle J A,Schamiloglu E 2007 High Power Microwaves(Second Edition) (Taylor Francis Group,LLC)
[2] Zherlitsyn A G, Melnikov G V, Isakov P Ya 2007 Journal of communication technology and electronics 52 798
[3] [4] [5] Chen Y, Mankowski J, Walter J, Kristiansen M, Gale R 2007 IEEE Transactions on Dielectrics and Electrical Insulation 14 1037
[6] [7] Li Z Q,Zhong H H,Fan Y W,Shu T,Yang J H,Yuan C W,Xu L R,Zhao Y S 2008 Chin. Phy. Lett. 25 2566
[8] [9] Luo X,Liao C,Meng F B,Zhang Y J,Wang X D 2007 High Power Laser and Particle Beams 19 92 (in Chinese) [罗 雄、廖 成、孟凡宝、张运俭、王晓东 2007 强激光与粒子束 19 92]
[10] Shao H, Liu G Z, Yang Z F 2006 High Power Laser and Particle Beams 18 230(in Chinese) [邵 浩、刘国治、杨占锋 2006 强激光与粒子束 18 230]
[11] [12] [13] Shao H,Liu G Z 2001 Acta Phys. Sin. 50 2387 (in Chinese) [邵 浩、刘国治 2001 物理学报 50 2387]
[14] Sung K Y, Jeon W, Jung Y, Lim J E, Uhm H S, Choi E H 2005 IEEE Trans. Plasma Sci. 33 1353
[15] [16] [17] Choi E H, Choi M C, Choi S H, Song K B, Jung Y, Seo Y H, Shin H M, Uhm H S, Lim D W, Kim C H, Lee J M, Ahn J W 2002 IEEE Trans. Plasma Sci. 30 1728
[18] Grigoryev V P, Koval T V 1999 IEEE International University Conference Electronics and Radiophysics of Ultra-High Frequencies 198
[19] [20] [21] Song K B, Lim J E, Seo Y, Choi E H 2009 IEEE Trans. Plasma Sci. 37 304
[22] Liu Y,Gong H R,Wei Y Y,Gong Y B,Wang W X,Liao F J 2009 Acta Phys. Sin. 58 7845 (in Chinese) [刘 漾、巩华荣、魏彦玉、宫玉彬、王文祥、廖复疆 2009 物理学报 58 7845]
[23] [24] Dong Y H, Ding Y G, Xiao L 2005 Acta Phys. Sin. 54 5629 (in Chinese) [董玉和、丁耀根、肖 刘 2005 物理学报 54 5629]
[25] [26] Tarakanov V P User's Manual for Code KARAT 2004 Virginia: Berkeley Research Associate inc.
[27] [28] Liu J,Li Z Q,Shu T 2010 Acta Phys. Sin. 59 2629(in Chinese) [刘 静、李志强、舒 挺 2010 物理学报 59 2629]
[29] [30] [31] Liu J, Li Z Q 2008 17th International Conference On High-Power Particle Beams, Xi'an, China
[32] [33] Jiang W, Woolverton K, Dickens J, Kristiansen M 1999 IEEE Trans. Plasma Sci. 27 1538
[34] Shu T, Wang Y, Qian B L, Tan Q M 2002 Chin. Phy. Lett. 19 1646
[35]
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