Initial investigation on wide spectrum short pulse generation of high power microwave

In order to explore the technology of high power microwave(HPM) generation by ultra short electrical pulse supply, the technical feasibility of generating wide spectrum HPM was analyzed by an S band relativistic extended interaction cavity oscillator(REICO) driven by ultra short electrical pulse using the theory and particle simulation method. A principle experiment using the Marx generator to generate triangle narrow electrical pulse driving the S band REICO was carried out. The rising time of 15 ns, along 30 ns, voltage 560 kV, current 2.8 kA triangle electron beam pulse produced by the Marx generator drove the REICO, and it produced short pulse high power microwave with a power of 410 MW, a pulse width of 8 ns, and a relative instantaneous bandwidth of 2.7% in simulation. Correspondingly, it generated the output microwave power of 160 MW, pulse width 10 ns, center frequency of 2.75 GHz, the relative bandwidth of 2.8% in the experiment.