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提出了一种曲折双脊波导慢波结构,理论分析了慢波结构的高频特性,并在此基础上设计了工作在Ka波段的曲折双脊波导行波管.利用三维粒子模拟软件MAGIC3D建立了曲折双脊波导行波管模型,并对行波管中的注-波互作用进行了模拟分析.在相同工作条件下,分析比较了曲折双脊波导行波管和曲折波导行波管的各种性能参量,从中发现:在行波管增益峰值相近的情况下,曲折双脊波导行波管具有更好的带宽性能,其3dB增益带宽为22%;同时具有更高的电子效率,其峰值接近9%.
In this paper, a kind of ZigZag waveguide structure is proposed, and the high frequency characteristics of the structure are analyzed theoretically. On the basis of this, a zigzag double-ridge waveguide traveling wave tube operating in the Ka band is designed. Using the three-dimensional particle simulation software MAGIC3D The dual-ridge waveguide TWT model is simulated and the wave-pipe interaction in TWTs is simulated.At the same working condition, the effects of the twist double-ridge waveguide TWT and TWT TWTs The results show that, in the case of TWT gain peaks, the TWG TWT has better bandwidth performance, and its 3dB gain bandwidth is 22%. At the same time, it has higher electron efficiency, The peak is close to 9%.