W 波段行波管低电压小型化技术研究

Study on the Low Voltage and Miniaturization Technologies for W-band Traveling Wave Tube

中文关键词:  W 波段  行波管  低电压  小型化  宽频带

英文关键词:W-band  traveling wave tubes  low voltage  miniaturized  wide band

中文摘要:

      有源相控阵雷达、无人机载侦察雷达的高频率发展,对小型化W 波段行波管提出了明确应用需求。文中主要开展W 波段行波管小型化研究,设计上采用低电压、大电流方案提高增益参量,使用高耦合阻抗慢波结构搭配相速跳变技术提升电子效率;同时开展零部件结构设计,实现整管小型化。基于上述方法开展了低电压百瓦级W 波段行波管设计并进行了制管验证。实测结果显示工作电压12. 8kV,89 GHz~100 GHz 频带内输出功率大于100 W;使用四极降压收集极提升总效率,90 GHz~99 GHz 内总效率大于30%,整管带外包装件尺寸为252×50×42 mm3。

英文摘要:

      With the development of active phased array radars and unmanned aerial vehicle-borne reconnaissance radars to higher frequencies, there is a clear application demand for miniaturized W-band traveling wave tubes. In this paper, the miniaturization of W-band TWT is mainly studied. Low voltage and high current are adopted to increase the gain parameter in the design. The folded slow wave structure with higher coupled impedance and the phase velocity step-tapering technology are used to improve the electronic efficiency. At the same time, the component structure design is carried out to realize the miniaturization of the TWT.Based on the above methods, the W-band TWT with lower voltage 12. 8 kV and 252×50×42 mm3 volume wasdesigned. The measured results show that the output power is above 100 W at 89 GHz~100 GHz. A four-stage collector is used to improve the total efficiency, 30% is achieved at 90 GHz~99 GHz.