Nonlinear time-dependent simulation of helix traveling wave tubes

• 来源期刊: 中国物理B(英文版)
• 学科: 物理学
• 关键词: 螺旋线行波管 频域模拟 时间变化 非线性 空间电荷场 时间平均 无线电频率 电子束
• 年，卷（期）: 2011,（7）
• 页码范围: 078401.1-078401.7
• 页数: 2页
• 分类号: O734
• 语种: 英文
• DOI: 10.1088/1674-1056/20/7/078401

摘要

A one-dimensional nonlinear time-dependent theory for helix traveling wave tubes is studied. A generalized electromagnetic field is applied to the expression of the radio frequency field. To simulate the variations of the high frequency structure, such as the pitch taper and the effect of harmonics, the spatial average over a wavelength is substituted by a time average over a wave period in the equation of the radio frequency field. Under this assumption, the space charge field of the electron beam can be t...