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群聚电子流中丰富的高次谐波，使速调管可以用来在微波波段作倍频次数较高的倍频器。 本文介绍了大讯号运动学分析对于倍频速调管的应用。给出最佳群聚参量及谐波电流参量和漂移空间渡越角间关系的计算方法。对于三次、十次和二十次谐波还给出了相应的计算曲线。对于十厘米波段外腔式倍频速调管进行了实验研究，介绍了实验结果，并和大讯号理论进行了比较。实验结果证实了当输入端讯号电压的振幅和电子注直流电压可以相比拟时，小讯号分析不再能用来措述器件中的群聚过程，而大讯号运动学分析却能给出很好的理论预示。
The rich high harmonics in the cluster electron flow make the klystron tube be used as a frequency multiplier with higher frequency multiplication in the microwave band. This article describes the application of the large-signal kinematics analysis to multiplier klystron. The calculation method of the best cluster parameters and the relationship between harmonic current parameters and drift angle is given. For the third, tenth and twenty harmonics are given the corresponding calculation curve. The experimental study on the extra-cavity frequency-doubler klystron of 10cm band is introduced. The experimental results are introduced and compared with the theory of large signal. The experimental results show that the small signal analysis can no longer be used to describe the clustering process in the device when the amplitude of the input signal voltage and the electronic DC voltage can be compared, but the large signal kinematics analysis can give a good Theoretical predictions.