摘要
0.14 THz折叠波导行波管是一种宽频带高增益器件,容易产生自激振荡,破坏管子的正常工作。在管内加入衰减器是抑制其振荡的核心技术。本文考虑了衰减材料的配比选择,以及结构形状的匹配,运用三维模拟软件对衰减器的吸收和反射特性进行计算,优化并研制出适合0.14 THz行波管使用的衰减器。进行冷测后,其匹配和吸收特性都满足衰减器需求,为制作0.14 THz行波管放大器奠定了基础。
0.14 THz Folded Waveguide Traveling Wave Tube(FWTWT) is a kind of devices with wide frequency band and high gain. But it tends to produce self-oscillation which will prevent the tube from normal working. Adding an attenuator into the tube is the core technology of suppressing self-oscillation. Considering the choice of the loss materials and the match of the structure, a kind of attenuator for the 0.14 THz FWTWT is optimized and designed with 3D simulation software by calculating the absorbability and reflection of the attenuator. The cold test shows that the match characteristic and the absorbability meet the requirements of the attenuator. It lays a foundation for the manufacture of 0.14 THz FWTWT.
出处
《太赫兹科学与电子信息学报》
2015年第4期533-535,555,共4页
Journal of Terahertz Science and Electronic Information Technology
基金
中国工程物理研究院太赫兹重点实验室基金资助项目(T2014-04-08)
关键词
0.14THz折叠波导行波管
自激振荡
衰减器
冷测
0.14 THz Folded Waveguide Traveling Wave Tubes
self-oscillation
attenuator
cold test
