沟道板慢波电路的高频特性
High-frequency characteristics of tunnelplane slow-wave circuit
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摘要: 提出了一种适用于毫米波行波放大器的慢波电路——沟道板慢波电路，该慢波电路的基本结构与沟道梯型慢波电路相似，但其环与金属壁间使用金属板相连。使用场论方法分析了沟道板慢波电路，得到的色散结果与CST的模拟结果之间的误差在1.5%以内。计算表明，沟道板慢波电路与沟道梯型慢波电路的耦合阻抗特性相似，且沟道板电路的色散相对较弱，具有更宽的带宽。Abstract: A new kind of slow-wave circuit, tunnelplane, is put forward. The tunnelplane circuit was similar to tunneladder slow-wave circuit, but the support between the ring and the metal wall is a metal plane. The tunnelplane was analyzed by field method. The discrepancy of dispersion between the analysis and CST was within 1.5%. The analysis shows that the tunnelplane structure has relatively broader band than the tunneladder structure, and both of the structures have high interaction impedance.
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Key words:
- high power microwave /
- tunneladder /
- tunnelplane /
- dispersion equation /
- interaction impedance
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