强激光与粒子束, 2015, 27 (9): 095003, 网络出版: 2015-11-30  

全固态模块化 MARX电路及脉冲同步叠加设计

Design of all-solid-state modularized Marx circuit and synchronous combining of pulses
作者单位
西安交通大学 电气工程学院, 西安 710049
摘要
选用雪崩三极管作为开关器件,详细讨论了设计和优化Marx电路的方法;将Marx电路进行模块化改进,设计了一种新型四路同步叠加立体结构,并得出了叠加倍数与模块数量的理论关系式。最终,利用+300 V直流电源供电,通过四路输出幅值为-2.6 kV的Marx模块叠加,在50 Ω阻性负载上得到了幅值-5.0 kV、半高脉宽5.3 ns、脉冲能量约2.0 mJ的高斯型脉冲,时延抖动小于100 ps,重复频率达10 kHz,叠加效率达96.2%。调节直流偏置电压为200~300 V,并配合模块数量的增减,可调节脉冲幅值为1.6~5.0 kV。
Abstract
In this paper, utilizing avalanche transistors as switching devices, the methods of designing and optimizing Marx circuit were discussed in detail. Modular improvement was implemented to the Marx circuit and a novel stereo structure of synchronous four-module combining was designed. The theoretical relation of the combining ratio and the combined modules were derived. Using a +300 V DC power and combining four -2.6 kV Marx modules, Gaussian pulses were obtained on a 50 Ω resistive load with -5.0 kV magnitude, 5.3 ns half peak width, 2.0 mJ single-pulse energy. It was realized to stably work under a repetitive frequency of 10 kHz and the time delay jitter was measured less than 100 ps. The four-module combining efficiency was calculated up to 96.2 %. If changing the DC bias voltage between 200 V and 300 V and varying the number of combined modules, the final output magnitude would be regulated from 1.6 kV to 5.0 kV.

李江涛, 钟旭, 薛静, 李征, 李涛, 顾悦, 王亚楠. 全固态模块化 MARX电路及脉冲同步叠加设计[J]. 强激光与粒子束, 2015, 27(9): 095003. Li Jiangtao, Zhong Xu, Xue Jing, Li Zheng, Li Tao, Gu Yue, Wang Ya’nan. Design of all-solid-state modularized Marx circuit and synchronous combining of pulses[J]. High Power Laser and Particle Beams, 2015, 27(9): 095003.

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