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	Computation for dispersion of gyro-TWT with a helical waveguide by MAFIA
	Zhou Lin ; Chen Huai-bi ; Xu Zhou ; Zheng Shu-xin ; He Xiao-zhong
	2010-05-06 ; 2010-05-06
关键词	Practical Experimental/ CAD dispersion (wave) gyrotrons helical waveguides microwave amplifiers physics computing travelling wave tubes/ gyro-TWT helical waveguide MAFIA spiral waveguide design dispersion characteristics CAD quasiperiodic boundary condition phaseshift dispersion equation longitudinal wavenumber dispersion curve slope microwave amplifier/ B2350D Travelling wave tubes B1310 Waveguides and striplines B1350 Microwave circuits and devices C7320 Physics and chemistry computing C7410D Electronic engineering computing
中文摘要	This paper provides a simple technique to design and optimize the spiral waveguide of Gyro-TWT. The dispersion characteristics of helical waveguide was given out. The structure of waveguide was modeled by CAD and it's dispersion curve was calculated by MAFIA using quasi-periodic boundary condition. The modes were calculated alternation 30 degrees phaseshift from -180 degrees to 180 degrees . This method leads to a good agreement with the result of dispersion equation over 8.3~10.6 GHz, and the maximum relative deviation is below 0.5%. For a rather broad frequency band around the point where the longitudinal wavenumber is equal to zero, the slope of the dispersion curve trends to a positive constant. As a micro-wave amplifier, Gyro-TWT using spiral waveguide has a good potential in improving its effectiveness and increasing its bandwidth.
语种	中文 ; 中文
出版者	Nucl. Soc. China ; China
内容类型	期刊论文
源URL	[http://hdl.handle.net/123456789/11488]
专题	清华大学
推荐引用方式 GB/T 7714	Zhou Lin,Chen Huai-bi,Xu Zhou,et al. Computation for dispersion of gyro-TWT with a helical waveguide by MAFIA[J],2010, 2010.
APA	Zhou Lin,Chen Huai-bi,Xu Zhou,Zheng Shu-xin,&He Xiao-zhong.(2010).Computation for dispersion of gyro-TWT with a helical waveguide by MAFIA..
MLA	Zhou Lin,et al."Computation for dispersion of gyro-TWT with a helical waveguide by MAFIA".(2010).

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