一种用于谐波倍增回旋放大器的耦合腔互作用电路
doi: 10.3724/SP.J.1146.2006.00597
A New Type of Coupled Cavity Interaction Circuit for Harmonic Multiplying Gyrotron Amplifier Applications
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摘要: 该文提出了一种用于回旋管放大器的新型耦合腔互作用电路模型。基于Ansoft HFSS高频计算软件，分析计算了矩形波导TE□10模输入，圆波导TE○01模输出模式转换系数随几何参数和工作频率的变化关系，讨论了结构变化对模式选择和抑制的作用。HFSS的模拟计算结果表明，对TE□10到TE○01转换，TE○01模能够稳定工作，且能量转换效率最大可以大于97%，－3dB带宽最大可以大于327MHz，是谐波倍增回旋行波放大器的一种可选输入耦合结构。Abstract: A new type of coupled cavity interaction circuit for harmonic multiplying gyrotron amplifier applications is proposed. Based on Ansoft HFSS software, the relation of the conversion coefficient from the rectangular waveguide TE□10 mode to the cylindrical waveguide TE○01 mode with geomitric parameters and frequency is calculated and analyzed, and the effect of the geomitric structure of the cavity on mode selection and suppression is discussed. Simulating results show that the energy conversion efficiency of more than 97% from the TE□10 mode to the TE○01 mode can be reached, and 3dB bandwidth is not less than 327MHz. The coupled cavity can be used as an input structure for harmonic multiplying gyrotron amplifier applications
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