- 必威体育下载

姓名
邮箱
手机号码
标题
留言内容
验证码

Abstract

Extended interaction klystron is a very important millimeter-wave and sub-millimeter-wave vacuum electron device with many actual and potential applications, such as space-borne cloud profiling radar, communication, imaging system, precision guided missiles, etc. Kinematical theory and space charge wave theory are extensively used to analyze the bunching process of electrons. Kinematical theory is precise when electron beam is especially small because the influence of space charge effect is ignored, while space charge wave theory is accurate when the modulation of electron beam is small since it is based on the premise of small amplitude. Based on kinematical theory, law of induce current, principle of charge conservation in a one-dimensioanl mode and small signal condition, the influence of electron beam on standing wave electric field in multiple-gap cavity is analyzed, and the expression of beam-loading conductance and beam-loading susceptance in multiple-gap cavity are derived. The influence of the direct current transmit angle of single gap, the number of multiple gaps and the direct current transmit angle of between center of adjacent gaps on beam-loading conductance and beam-loading susceptance are analyzed. The results show that the beam-loading conductance and beam-loading susceptance of multiple-gap cavity can change to a bigger extent when the number of cavity gaps is bigger, which means that the maximum beam-wave conversion efficiency and the range of loaded frequency increase with the number of cavity gaps increasing. The results also show that the direct current transmit angle between centers of adjacent gaps is the most important parameter for the beam-wave interaction effect. Based on the above analysis, a G-band extended interaction klystron amplifier consisting of three five-gap cavities is designed by an three-dimensional PIC code. An output power of 225.5 W at 217.94 GHz with an efficiency of 6.26%, whose gain and 3 dB bandwidth are 30.5 dB and 470 MHz respectively, is obtained by simulation. This study is of great significance for the physical design and process in engineering the G-band extended interaction klystron amplifier.

Keywords:

Authors and contacts

Corresponding author:Chen Hong-Bin,17721915695@163.com

Funds:Project supported by the Program of the Ministry of Science and Technology of China (Grant No. 2018YFC0115001).

FullText HTML: translate this paragraph

References

[1]
[2]
[3]
[4]
[5]
[6]
[7]
[8]
[9]
[10]
[11]
[12]
[13]
[14]
[15]
[16]
[17]
[18]
[19]
[20]
[21]
[22]
[23]
[24]
[25]
[26]
[27]
[28]
[29]
[30]
[31]
[32]
[33]
[34]
[35]
[36]
[37]
[38]

Cited By

DownLoad: Full-Size Img PowerPoint

谐振腔	纵向工作模式	谐振频率/GHz	固有品质因数Q₀	外观品质因数Q_ext	起始位置/mm
输入腔	${\text{π}}$模	218	413	380	0
中间腔	${\text{π}}$模	218.05	413	∞	4.87
输出腔	${\text{π}}$模	218	413	1940	7.77

DownLoad: CSV

[1]
[2]
[3]
[4]
[5]
[6]
[7]
[8]
[9]
[10]
[11]
[12]
[13]
[14]
[15]
[16]
[17]
[18]
[19]
[20]
[21]
[22]
[23]
[24]
[25]
[26]
[27]
[28]
[29]
[30]
[31]
[32]
[33]
[34]
[35]
[36]
[37]
[38]

[1]	Zeng Zao-Jin, Hu Lin-Lin, Ma Qiao-Sheng, Jiang Yi, Chen Hong-Bin.Design and experimental analysis of W-band extended interaction klystron amplifier. Acta Physica Sinica, 2019, 68(8): 084101.doi:10.7498/aps.68.20182194
[2]	Zeng Zao-Jin, Ma Qiao-Sheng, Hu Lin-Lin, Jiang Yi, Hu Peng, Lei Wen-Qiang, Ma Guo-Wu, Chen Hong-Bin.Theoretical analysis and simulation of W-band sheet beam extended interaction klystron amplifier. Acta Physica Sinica, 2019, 68(24): 248401.doi:10.7498/aps.68.20190907
[3]	Luo Ji-Run, Tang Yan-Na, Fan Yu, Peng Shu-Yuan, Xue Qian-Zhong.Comparative demonstration of multimode steady-state theory for the gyrotron traveling-wave tube based on a distributed loss-loaded metal cylindrical waveguide. Acta Physica Sinica, 2018, 67(1): 018402.doi:10.7498/aps.67.20171831
[4]	Liu Zhen-Bang, Zhao Yu-Cong, Huang Hua, Jin Xiao, Lei Lu-Rong.Analysis and design of a Ka-band sheet beam relativistic extended interaction klystron amplifier. Acta Physica Sinica, 2015, 64(10): 108404.doi:10.7498/aps.64.108404
[5]	Chen Shu-Yuan, Ruan Cun-Jun, Wang Yong.Research on equivalent circuit of multi-gap output cavity for sheet beam extended-interaction klystron. Acta Physica Sinica, 2014, 63(2): 028402.doi:10.7498/aps.63.028402
[6]	Xue Zhi-Hao, Liu Pu-Kun, Du Chao-Hai.Research on non-linear beam-wave interaction of W-band Gyro-TWT with helical waveguide. Acta Physica Sinica, 2014, 63(8): 080201.doi:10.7498/aps.63.080201
[7]	Yan Wei-Zhong, Hu Yu-Lu, Li Jian-Qing, Yang Zhong-Hai, Tian Yun-Xian, Li Bin.Research on the beam-wave interaction theory of folded waveguide traveling wave tubes based on three-port network model. Acta Physica Sinica, 2014, 63(23): 238403.doi:10.7498/aps.63.238403
[8]	Chen Yong-Dong, Wu Yang, Xie Hong-Quan, Li Zheng-Hong, Zhou Zi-Gang.Nonlinear interaction between modulated electron beam and the intermediate cavity of RKA. Acta Physica Sinica, 2013, 62(10): 104104.doi:10.7498/aps.62.104104
[9]	Chen Ye, Zhao Ding, Wang Yong.Study on the interaction between a sheet electron beam and the slow-wave structure for dielectric-loaded rectangular Cerenkov maser. Acta Physica Sinica, 2012, 61(9): 094102.doi:10.7498/aps.61.094102
[10]	Xue Zhi-Hao, Liu Pu-Kun, Du Chao-Hai, Li Zheng-Di.Research on non-linear beam-wave interaction of W-band gyro-TWT with helical waveguide. Acta Physica Sinica, 2012, 61(17): 170201.doi:10.7498/aps.61.170201
[11]	Bai Chun-Jiang, Li Jian-Qing, Hu Yu-Lu, Yang Zhong-Hai, Li Bin.Calculation of beam-wave interaction of coupled-cavity TWT using equivalent circuit model. Acta Physica Sinica, 2012, 61(17): 178401.doi:10.7498/aps.61.178401
[12]	Wu Yang, Xu Zhou, Zhou Lin, Li Wen-Jun, Tang Chuan-Xiang.Simulation and design of a W-band extended interaction klystron amplifier. Acta Physica Sinica, 2012, 61(22): 224101.doi:10.7498/aps.61.224101
[13]	Guo Jian-Hua, Yu Sheng, Li Hong-Fu, Zhang Tian-Zhong, Lei Chao-Jun, Li Xiang, Zhang Yan-Yan.Transient nonlinear theory and model of beam-wave interaction for gyroklystron. Acta Physica Sinica, 2011, 60(9): 090301.doi:10.7498/aps.60.090301
[14]	Zhang Xiao-Feng, Ruan Cun-Jun, Luo Ji-Run, Ruan Wang, Zhao Ding.Beam-wave interaction and simulation program for sheet beam klystron. Acta Physica Sinica, 2011, 60(6): 068402.doi:10.7498/aps.60.068402
[15]	Peng Wei-Feng, Hu Yu-Lu, Yang Zhong-Hai, Li Jian-Qing, Lu Qi-Ru, Li Bin.A time-dependent theory for helix traveling wave tubes in beam-wave interaction. Acta Physica Sinica, 2010, 59(12): 8478-8483.doi:10.7498/aps.59.8478
[16]	Hao Bao-Liang, Xiao Liu, Liu Pu-Kun, Li Guo-Chao, Jiang Yong, Yi Hong-Xia, Zhou Wei.Calculations of three-dimensional frequency-domain nonlinear beam-wave reaction for helix traveling wave tubes. Acta Physica Sinica, 2009, 58(5): 3118-3124.doi:10.7498/aps.58.3118
[17]	Sun Hai-Yan, Jiao Chong-Qing, Luo Ji-Run.Influence of reflection of the output port on beam-wave interaction in gyrotron traveling wave amplifier. Acta Physica Sinica, 2009, 58(2): 925-929.doi:10.7498/aps.58.925
[18]	Hu Yu-Lu, Yang Zhong-Hai, Li Jian-Qing, Li Bin, Gao Peng, Jin Xiao-Lin.Theoretical model and numerical simulation of three-dimensional multifrequency interaction of helix traveling wave tubes. Acta Physica Sinica, 2009, 58(9): 6665-6670.doi:10.7498/aps.58.6665
[19]	Zhao Ding, Ding Yao-Gen, Wang Yong.Research on 2.5-dimensional nonlinear beam-wave interaction program of klystrons. Acta Physica Sinica, 2007, 56(6): 3324-3331.doi:10.7498/aps.56.3324
[20]	Li Jian-Qing, Mo Yuan-Long.General theory of nonlinear beam-wave interaction in traveling-wave tubes. Acta Physica Sinica, 2006, 55(8): 4117-4122.doi:10.7498/aps.55.4117

Catalog

Vol. 68, Issue 15 - 2019-08-05

Metrics

Abstract views:7170
PDF Downloads:47
Cited By:0

Search

Article