Simple Formulas for Stopband Attenuation Characteristics of Asymmetric Helical Slow-Wave Structures of Traveling-Wave Tubes
Simple Formulas for Stopband Attenuation Characteristics of Asymmetric Helical Slow-Wave Structures of Traveling-Wave Tubes
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DOI：
10.1109/ted.2010.2047069
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发表时间：
2010-05
影响因子：
3.1
通讯作者：
S. K. Datta;V. B. Naidu;P. Rao;L. Kumar;B. Basu
中科院分区：
文献类型：
--
作者：
S. K. Datta;V. B. Naidu;P. Rao;L. Kumar;B. Basu
在多次反射的耦合模式分析之后，开发了用于估计方位不对称螺旋慢波结构 (SWS) 中 π 模式阻带和阻带衰减的简单封闭式公式。这些公式简单且易于计算，并且还允许使用从任何标准电磁建模中获得的结构的色散特性，从而提高 3D 电磁分析的准确性。该分析以已发布的结果为基准，结果非常一致。根据分析，建议使用 SWS 配置来减少不对称的有害影响并提高行波管效率。
Simple closed-form formulas for the estimation of the π-mode stopband and the stopband attenuation in an azimuthally asymmetric helical slow-wave structure (SWS) are developed, following the coupled-mode analysis of multiple reflections. The formulas are simple and amenable to easy computation, and also allow the use of the dispersion characteristics of the structure obtainable from any standard electromagnetic modeling, thereby accruing the accuracy of 3-D electromagnetic analysis. The analysis is benchmarked against published results with close agreement. Based on the analysis, SWS configurations that would reduce the deleterious effects of asymmetry and also would improve TWT efficiency are suggested.