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中文摘要：
建立了沟道梯型行波管的等效电路模型,并用等效电路与模拟软件相结合的方法求解了沟道梯型慢波电路的色散、耦合阻抗和衰减,所得到的本征频率与实验数据的误差在0.5%以内,耦合阻抗与实验数据的误差在10%以内.与使用数值软件HFSS相比较,等效电路方法的耗时仅是它的数十分之一.
英文摘要：
An equivalent circuit model of tunneladder traveling wave tubes （TWTs） was constructed. By the combination of the equivalent circuit method and simulation software, the dispersion, interaction impedance and attenuation of the tunneladder TWT were calculated. The discrepancy of dispersion between the results by equivalent circuit and those of experiments is within O. 5%, and that of interaction impedance is within 10%. The computer time of the equivalent circuit is only several tenths of that calculated by HFSS.
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