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为了给脉冲源的参数选择和电磁脉冲防护提供理论支撑,首先对雪崩三极管的雪崩效应以及全固态快沿电磁脉冲源的工作原理进行阐述。然后通过对雪崩三极管导通过程简化,建立了该脉冲源的等效模型,分析了该脉冲源的时域特性,通过自定义曲线拟合方法,首次得到了脉冲源输出波形的数学表达式,并验证了它的有效性,最终确定了脉冲源的具体理论模型。依据此表达式的参数,通过对脉冲电流的频域分析表明:电流的振幅主要集中在0~200MHz之间,90%以上的能量都分布在810MHz以内。
In order to provide theoretical support for the pulse source parameter selection and electromagnetic pulse protection, firstly, the avalanche effect of the avalanche transistor and the working principle of the all solid state fast along the electromagnetic pulse source are described. Then the equivalent model of the pulse source is established by simplifying the conduction process of the avalanche transistor. The time-domain characteristics of the pulse source are analyzed. The mathematical expression of the output waveform of the pulse source is obtained for the first time by the method of curve fitting. And verify its effectiveness, and finally determine the specific theoretical model of the pulse source. According to the parameters of this expression, the frequency domain analysis of the pulse current shows that the amplitude of the current is mainly concentrated in the range of 0-200MHz, and the energy of more than 90% is distributed in the range of 810MHz.