Analysis of Dispersion and Losses in Helically Corrugated Metallic Waveguides by 2-D Vector Finite-Element Method
Analysis of Dispersion and Losses in Helically Corrugated Metallic Waveguides by 2-D Vector Finite-Element Method
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DOI：
10.1109/tmtt.2011.2160201
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发表时间：
2011-09-01
影响因子：
4.3
通讯作者：
Samsonov, Sergey V.
中科院分区：
文献类型：
--
作者：
Mishakin, Sergey V.;Samsonov, Sergey V.
内表面有螺旋波纹的空心金属圆波导（螺旋波导）在回旋管行波管中的相互作用区域和作为无源微波脉冲压缩的色散介质等方面的应用引起了人们的广泛关注。本文采用二维矢量有限元方法计算了螺旋波导本征波的色散、衰减特性和电磁场分布。通过与已有的三维计算结果的比较表明，该方法在计算一些实际重要情况下具有足够的精度，而且消耗的计算机资源要少得多。
Hollow metallic circular waveguides with helical corrugation of the inner surface (helical waveguides) attract considerable interest for various applications such as interaction regions in gyrotron traveling-wave tubes and as a dispersive medium for passive microwave pulse compression.In this paper, we employ a vector finite-element method in 2-D formulation for computation of the dispersion, attenuation characteristics, and the distribution of electromagnetic fields of eigenwaves of helical waveguides. As shown by comparison with the results of previously performed 3-D calculations, the presented method provides sufficient accuracy of calculating the characteristics of helical waveguides for a number of practically important cases at much lesser consumption of computer resources.