带状注器件在高频率、高功率方向发展潜力巨大,而多间隙腔是提高效率和功率容量的有效手段。本文提出了一种带状注速调管多间隙输出腔,并设计了一种Ka波段带状注速调管输出腔。此输出腔结构可以获得好的输出耦合特性,以及理想的电场场形。最后通过MAGIC粒子模拟软件对电子注群聚,能量转换以及输出腔频谱特性等作了仿真和详细分析,在中心频率获得了稳定的功率输出,互作用效率达到50%以上。 Band-like devices in the high-frequency, high-power direction of great potential for development, and more space is to improve efficiency and power capacity of the effective means. In this paper, we propose a multi-gap output cavity with a band-shaped klystron, and design a k-band band-shaped klystron output cavity. This output cavity structure provides good output coupling characteristics and ideal field pattern. Finally, MAGIC particle simulation software was used to simulate and analyze the electron cluster, energy conversion and spectral characteristics of the output cavity. The power output was stable at the center frequency and the interaction efficiency was over 50%.