The paper analyzes the reason why the pulse top spreads and the rise time shortens in a fault experiment on long pulse high power linear transformer microwave driver. Effects of waves superposition delay are discussed based on current transmission model. Output pulse waveforms are then derived by three dimensional simulation on the experimental prototype under excitations of different time sequences. The result suggests that, if the module closest to the diode is the first module physically, the delay from the switch triggered can be offsetted by waves superposition delay, and thus the wave optimization can be realized.%从长脉冲直线变压装置故障试验出发,对其波形顶部展宽、前沿变短现象进行了分析.利用电流传导理论,探讨了波叠加延迟效应.通过3维仿真分析,得到了不同时序激励的输出波形.结果表明:靠近二极管端单元为首模块时,开关触发延时与波叠加传输延迟可相互抵消,实现波形优化目标.
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