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提出了一种新型的可用于产生、放大毫米波和太赫兹波的正弦波导慢波结构。该结构有天然的带状电子注通道,具有低欧姆损耗和弱反射,且易于加工等独特性质。计算了慢波结构的高频特性,粒子模拟分析了该慢波结构在220GHz行波管及220GHz返波管中的应用潜力。研究结果显示,正弦波导将是一种很有潜力的可应用于大功率毫米波及太赫兹辐射源的慢波结构。
A new type of sinusoidal waveguide slow-wave structure that can be used to generate and amplify millimeter-wave and terahertz waves is proposed. The structure has a natural ribbon electron injection channel, with low ohmic loss and weak reflection, and easy to process and other unique properties. The high-frequency characteristics of the slow-wave structure are calculated. The potential of the slow-wave structure in 220GHz traveling wave tube and 220GHz return wave tube is analyzed by particle simulation. The results show that the sinusoidal waveguide will be a promising slow-wave structure that can be applied to high-power millimeter-wave and terahertz radiation sources.