Analysis of Dispersion and Losses in Helically Corrugated Metallic Waveguides by 2-D Vector Finite-Element Method

作者：Mishakin Sergey V^*; Samsonov Sergey V

来源：IEEE Transactions on Microwave Theory and Techniques, 2011, 59(9): 2189-2196.

DOI：10.1109/TMTT.2011.2160201

• Eigenmodes
• finite-element methods (FEM)
• helical waveguides
• irregular waveguides

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.

• 出版日期2011-9