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物理学报. 2009, 58(9): 6665-6670.
doi: 10.7498/aps.58.6665.
螺旋线行波管三维多频非线性理论分析和数值模拟
- 收稿日期: 2007-06-25
- 修回日期: 2009-02-19
- 刊出日期: 2009-09-20
English Abstract
Theoretical model and numerical simulation of three-dimensional multifrequency interaction of helix traveling wave tubes
- Received Date:
25 June 2007
- Accepted Date:
19 February 2009
- Published Online:
20 September 2009
Abstract: A three-dimensional multifrequency interaction model for helix traveling wave tubes is described. Spatial variation of the amplitude of the wave is found by field theory. With the help of paticle-in-cell （PIC） method and space harmonic current and charge expansion, the three-dimensional space charge field is found. using the code, 8—18GHz wide band TWT is simulated for different frequencies. Also, the nonlinear AM-AM and AM-PM distortion,third-order intermodulation products and fifth-order intermodulation are computed. The hot data of experiment is close to the code computation in saturation output power and output gains in the range of 8—18GHz.
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Keywords:
- beam-wave interaction /
- three-dimensional /
- nonlinear /
- helix TWT
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