高重复频率纳秒级脉冲发生器研究  

Study on High Repetition Frequency Nanosecond Pulse Generator

作　　者：杨景红[1] 刘超[1] 杨明[1] YANG Jing-hong;LIU Chao;YANG Ming(The 14th Research Institute of China Electronic Technology Group Corporation,Nanjing 210039,China)

机构地区：[1]中国电子科技集团公司第十四研究所,南京210039

出　　处：《微波学报》2020年第3期65-70,共6页Journal of Microwaves

摘　　要：为实现高重复频率纳秒级脉冲输出,提出了采用射频功率MOSFET,基于感应叠加拓扑的脉冲发生器。脉冲发生器采用15个模块化组件,每个组件输出670 V/50 A脉冲,每个组件的输出脉冲在感应变压器次级串联叠加,得到10 kV/50 A高压脉冲。为实现脉冲前沿小于5 ns,必须尽量降低脉冲变压器漏感以及组件和系统的回路电感。感应脉冲变压器采用圆柱形同轴结构,初次级均为单匝,并且和脉冲发生器单元一体化设计,以减小漏感以及组件分布电感。采用大功率驱动电路和同步触发器,实现MOSFET开关的快速导通和关断,以及触发的一致性。仿真结果显示设计能够满足指标要求。The inductive adder pulse generator based on RF power MOSFET(metal oxide semiconductor field effect transistor)is proposed to realize high repetition frequency nanosecond pulse according to technical index and research status at home and abroad.There are the same fifteen cells utilized in the pulse generator,and each can output pulse with 670 V/50 A.Consequently the high voltage pulse with 10 kV/50 A is reached as the secondary windings of pulse transformers of all the cells stacked are connected in series.The leakage inductance of the transformer and the loop inductances of the generator and cells must be very small for fulfilling the rise time less than 5 ns.Both primary and secondary windings of the transformer with a coaxial configuration consist of a single turn,and the integral design of the pulse generator unit module and the transformer is carried out,which are adopted to reduce the leakage inductance of the transformer and the loop inductances of the cell.The high power drive circuit and a synchronous trigger with multiple outputs are used to switch on and off the MOSFET fast and simultaneously.The simulation results show that the design meets the requirements.

关 键 词：高重复频率 纳秒级 脉冲发生器 固态开关 感应叠加拓扑 

分 类 号：TN782[电子电信—电路与系统]