0.41THz折叠波导慢波结构分析与设计

Design and analysis for 0.41 THz folded waveguide slow wave structure

在0.14 THz,0.22 THz和0.34 THz折叠波导行波管研制的基础上,讨论了0.41 THz折叠波导行波管慢波结构设计与加工的可行性,分析研究了折叠波导慢波结构弯曲处直角弯曲与半圈弯曲、方形电子注通道与圆形电子注通道对色散特性、耦合阻抗、带宽、冷损耗和增益的影响。考虑了慢波结构中增加理想衰减器对该行波管带宽和增益的影响,得到了0.41 THz折叠波导行波管慢波结构的初步设计方案,为太赫兹折叠波导行波管的继续发展打下了一定基础。

Based on the development of the 0.14 THz, 0.22 THz, and 0.34 THz folded waveguideTraveling Wave Tubes（TWTs）, the design and fabrication for 0.41 THz folded waveguide slow wavestructure is discussed. The differences between circular bend and orthogonal bend affecting the dispersion,coupling impedance, loss, bandwidth, and gain of the 0.41 THz folded waveguide TWT are investigated.The effects of beam profile on dispersion, coupling impedance, loss, bandwidth, and gain of the 0.41 THzfolded waveguide TWT are analyzed. The influence of sever on bandwidth and gain of the 0.41 THz foldedwaveguide TWT is presented. The initial design scheme for 0.41 THz folded waveguide TWT slow wavestructure is obtained. This work can lay the foundation for developing THz folded waveguide TWTs.