设计了一种全固态高压重频方波脉冲发生器，主要由Marx发生器、脉冲形成线和磁开关构成。Marx发生器通过电感对脉冲形成线进行充电，将其充电至所需电压水平; 当脉冲形成线充电至峰值电压时，磁开关饱和; 脉冲形成线通过饱和的磁开关对匹配负载进行放电，在负载上形成一个高压方波脉冲。串入电感与磁开关相互匹配，不仅直接影响放电过程，同时也决定着磁开关需承受的伏秒数和负载上的预脉冲大小。介绍了Marx发生器和磁开关的设计，在单次和5 kHz重复频率下分别进行实验。在50 Ω的匹配电阻负载上，获得电压幅值为12.5 kV、电流幅值为250 A、上升时间为46 ns、脉宽为220 ns的方波脉冲。对放电过程进行了PSPICE仿真模拟，仿真结果与实验结果匹配良好。

An all solid-state high-voltage rectangular pulse generator is proposed. This generator consists of a Marx generator, a pulse forming line (PFL) and a magnetic switch (MS). As a power supply, the Marx generator discharges to the PFL through an inductor. The inductor should cooperate with MS since it influences the discharging process directly and determines the volt-second product of the MS and the pre-pulse over the load. The MS saturates at exactly the moment the discharging process ends. PFL discharges to the matched resistor load through the saturated MS and a high voltage rectangular pulse is obtained over the load. The designs of the Marx generator and the MS are introduced in this paper. Experiments under a single shot and repetitive frequency of 5 kHz are carried out. PSpice simulations with a simplified model of MS are carried out to verify the experimental results. The experimental result matches well with the simulation results. A rectangular pulse with 12.5 kV voltage amplitude, 250 A current amplitude, 46-ns rise-time, 220 ns pulse-width is obtained over the 50 Ω resistor load.