The miniaturized traveling wave tube (TWT) is a kind of high-efficiency, high-power, long-lifetime power amplifier which is an attractive choice for many applications, such as outer space exploration, phased array radar detection, unmanned aerial vehicle (UAV) communication, and on-chip application. In this article, a sheet beam miniaturized TWT with V-shaped meander-line slow wave structure (SWS) supported by two trapezoidal ceramic rods is designed. First, the dispersion characteristics, the impedance characteristics, and the S-parameters of the V-shaped meander-line SWS are analyzed in detail. Then, the particle-in-cell (PIC) simulation results predict that the TWT can produce 512-W output power driven by a 7.1 kV, 0.3-A sheet beam with a rectangular cross-sectional area of 3.5 mm $\times0.1$ mm. The TWT can cover the whole ${X}$ -band when the operation voltage shift from 7.1 to 9.1 kV. At last, the V-shaped meander-line SWS is manufactured, assembled, and tested. The good agreement between the simulated and the measured ${S} _{\mathbf {11}}$ has been achieved and the mismatch between the simulated and the measured ${S} _{\mathbf {21}}$ has been discussed at the end.

中文翻译：

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X波段薄板梁曲折线SWS的研究

微型行波管（TWT）是一种高效率、大功率、长寿命的功率放大器，是外太空探索、相控阵雷达探测、无人机（UAV）等许多应用的有吸引力的选择。 ) 通信和片上应用。本文设计了一种由两根梯形陶瓷棒支撑的具有V形曲折线慢波结构（SWS）的薄板梁小型化行波管。首先，详细分析了V形曲折线SWS的色散特性、阻抗特性和S参数。然后，细胞内粒子 (PIC) 模拟结果预测 TWT 可以产生 512 W 输出功率，由 7.1 kV、0.3 A 片状光束驱动，矩形横截面积为 3.5 mm $\times0.1$ 毫米。TWT可以覆盖整个 ${X}$ -band 当工作电压从 7.1 kV 转变为 9.1 kV 时。最后，制作、组装和测试了V形曲折线SWS。模拟和测量之间的良好一致性 ${S} _{\mathbf {11}}$ 已经实现，并且模拟和测量之间的不匹配 ${S} _{\mathbf {21}}$ 已在最后讨论。