| 新型自由矩形螺旋线慢波结构高频特性 |
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| 引用本文： | 付成芳, 魏彦玉, 朱汉清, 等. 新型自由矩形螺旋线慢波结构高频特性[J]. 强激光与粒子束, 2011, 23(09). |
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| 作者姓名： | 付成芳 魏彦玉 朱汉清 段兆云 张健 |
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| 作者单位： | 1.淮阴工学院 电子与电气工程学院, 江苏 淮安 223003;;;2.电子科技大学 物理电子学院, 成都 61 0054;;;3.南京信息工程大学 信息与控制学院, 南京 21 0044 |
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| 摘 要： | 在Sheath模型下,采用严格的场匹配法,结合积分形式的边界条件，推导了自由矩形螺旋线的色散方程和耦合阻抗表达式，并与近似理论进行对比。结果表明:与近似理论相比, 严禁场匹配法具有更高的准确性,且采用场匹配法的数值计算结果与3维商业电磁仿真软件结果吻合得很好。从而证明了所采用理论方法的有效性。同时分析了矩形螺旋线横截面尺寸、螺距、螺旋角、纵横比对色散特性和耦合阻抗的影响，结果表明：只有当矩形螺旋线横截面纵横比大于4时，才可忽略横截面的宽度对高频特性的影响，通过调节结构的参数可以改善色散和提高耦合阻抗。
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| 关 键 词： | 矩形螺旋线 慢波结构 色散特性 耦合阻抗 高功率微波 |
High-frequency characteristics of free rectangular helical slow-wave structure |
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| fu chengfang, wei yanyu, zhu hanqing, et al. High-frequency characteristics of free rectangular helical slow-wave structure[J]. High Power Laser and Particle Beams, 2011, 23. |
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| Authors: | fu chengfang wei yanyu zhu hanqing duan zhaoyun zhang jian |
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| Affiliation: | 1. Faculty of Electronic and Electrical Engineering,Huaiyin Institute of Technology,Huai’an 223003,China;;;2. School of Physical Electronics,University of Electronic Science and Technology of China,Chengdu 610054,China;;;3. School of Information and Gybernetics,Nanjing University of Information Science and Technology,Nanjing 210044,China |
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| Abstract: | Based on sheath model, high-frequency characteristics including dispersion properties and coupling impedance of rectangular helix structure are derived by using field-matching method combining with integral boundary conditions. The numerical results, which are generally based on approximation approach, agree well with the results obtained by three-dimensional electromagnetic simulation software. Only when the aspect ratio of rectangular cross-section is larger than 4, the influence of the section width on the high-frequency characteristics can be neglected. Moreover, changing the pitch and dimensions of rectangular cross-section can improve the dispersion characteristics and the coupling impedance. |
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| Keywords: | rectangular helix slow-wave structure dispersion characteristics coupling impedance high-power microwave |
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