0.22 THz折叠波导行波管设计

Study of designing 0.22 THz folded waveguide traveling wave tubes

在一支0.22 THz折叠波导行波管样管的模拟设计和实验研究基础上,对该样管进行了优化设计。对慢波损耗特性、慢波结构的尺寸冗余度进行了研究,对结构加工进行了进一步的考虑,对样管的实验研究进行了详细讨论并论述了新慢波结构的设计。采用HFSS软件结合大信号理论计算进行模拟,结果表明,折叠波导行波管的输出功率不低于100 mW,带宽不低于5 GHz。

A prototype 0.22 THz Folded Waveguide Traveling Wave Tube(FWTWT) is designed and studied by experiments. By the comparison between the experimental and simulated results, this 0.22 THz FWTWT is optimized and improved. The loss characteristics, Slow Wave Structure(SWS) dimension adjustment and the issues of manufacturing SWS are also studied. HFSS is adopted to study SWS parameters and a large-signal software is used to simulate its amplification. The results of 100 mW power output and 5 GHz of 3 dB bandwidth are obtained in this new design.