紧凑重频PFN-Marx脉冲发生器

研制了一台紧凑重频脉冲形成网络(PFN)-Marx脉冲发生器，由PFN-Marx发生器、脉冲充电单元、重频触发单元等组成。PFN-Marx发生器模块采用全电感隔离，直径为480 mm，长度为700 mm。脉冲充电单元采用中储电容加脉冲变压器方法，单次充电可以满足10次输出。重频触发单元采用变压器和磁开关一体化设计的全固态Marx发生器技术，输出电压大于50 kV，前沿小于100 ns。脉冲发生器早期输出电参数为单次10 GW，脉冲宽度100 ns，前沿10 ns，阻抗40 。重频工作时输出功率7 GW，频率5 Hz。后期调整后电参数更改为单次10 GW，脉冲宽度70 ns，前沿10 ns，阻抗50 。重复频率工作时稳定输出功率8 GW，频率10 Hz，单串10个脉冲。初步的应用研究中，利用改进后的平台，在5 GW条件下驱动磁控管获得了S波段约1 GW的微波输出。

A compact repetitive PFN-Marx generator

A compact repetitive PFN-Marx generator was constructed for the application of generating electron beams. The generator has twenty-two stages with inductive isolation. Each stage consists of twenty-one ceramic capacitors which may be charged the maximal voltage of 60 kV by a pulse transformer in 50 s. A compact Marx trigger with the integrated design of a pulse transformer and a magnetic switch which have a common magnetic core was also fabricated. The generator can operate at 5 Hz rep-rate with the output power of 7 GW, the impedance of 40 and the pulse width of 100 ns. Changing the capacitor units, an improved generator with the impedance of 50 and the pulse width of 70 ns generates ten pulses of one burst with the power of 8 GW at 10 Hz rep-rate. An S-band magnetron driven by the improved generator has generated microwave output with the power of 1 GW at the frequency of 2.32 GHz, which preliminarily shows the generators ability of driving high power microwave devices.