Ka波段500W螺旋线行波管的设计和研究进展
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摘要
本文介绍了Ka波段500W毫米波螺旋线行波管的整体设计和目前的研究进展,利用CST软件模拟了返波振荡的起振频率和起振长度等参量。采用了相速渐变、低电子注填充比和磁场优化等多种抑制返波振荡的方法。研制出了大功率Ka波段螺旋线行波管初样管,在Ka波段2GHz工作频带内,行波管峰值输出功率达到500W以上,饱和增益大于39d B。返波振荡得到了有效抑制,返波基波功率比在-27d Bc~-33d Bc之间。
引文
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[5]陈波等4人.螺旋线镀铜对行波管电子效率提升的模拟计算,真空电子学学术年会;2013,270-273.
[2]David Chernin,Thomas M.Antonsen,Jr.,Member,IEEE,and Baruch Levush,Fellow,IEEE,“Power Holes”and Nonlinear Forward and Backward Wave Gain Competition in Helix Traveling-Wave Tubes”,IEEE Trans.Electron Devices,vol.50,no.12,pp.2540-2547,December 2003
[3]G.I.Haddad and R.M.Bevensee,“Start-Oscillation conditions of tapered backward-wave Oscillation”,IEEE Trans.Electron Devices,vol.10,no.6,pp.389-393,NOV.1963
[4]O.Nillson and C.Hangstrom,”A two-wave theory of travelling-wave tubes and backward-wave oscillations,”IEEE Trans.Electron Devices,vol.ED-22,no.10,pp.869-880,NOV.1975
[5]陈波等4人.螺旋线镀铜对行波管电子效率提升的模拟计算,真空电子学学术年会;2013,270-273.