Meander lines are promising slow-wave structures (SWSs) for millimeter-wave traveling-wave tubes (TWTs) due to low-cost manufacture, low-voltage operation, and high interaction impedance. However, experimental results on meander lines are rare in the literature. Phase velocity and interaction impedance are the most important parameters for the design and characterization of TWT SWSs. Their experimental determination in meander lines is crucial for validating simulations and developing new topologies. Based on a new theoretical model, this article presents an experimental procedure to determine the phase velocity and the interaction impedance. The method is validated on four different Ka -band (33–37 GHz) meander-line SWSs, including two of a novel topology.

中文翻译：

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太空行波管曲折线慢波结构的相速度和相互作用阻抗的实验验证

由于低成本制造，低电压操作和高交互阻抗，曲折线有望成为毫米波行波管（TWT）的慢波结构（SWS）。但是，在弯曲线上的实验结果在文献中很少见。相速度和相互作用阻抗是TWT SWS设计和表征的最重要参数。他们在弯折线上的实验确定对于验证仿真和开发新拓扑至关重要。基于新的理论模型，本文提出了确定相速度和相互作用阻抗的实验程序。该方法在四种不同的方法上得到了验证K a （33-37 GHz）曲折线SWS，包括两种新颖的拓扑结构。