<p>A new high-gain over-moded microwave pulse compression system has been found. The power gain of the system, in the optimal resonant state, has reached up to 280.04:1.00 for the rectangular TE1,0,20 resonant mode at 2.920GHz in S-band. Relative the traditional physical model before, the power gain of the new physical model increased by 51.86%; It has an important potential application to generate an ultra-high power microwave pulse of 28GW and 13ns in experiment rather than in theory. What the advanced technoloy and theory, see this letter to the international top SCI magzine of " <strong>IEEE Transactions on Microwave Theory and Techniques</strong> " .</p>

<p>A new high-gain over-moded microwave pulse compression system has been found. The power gain of the system, in the optimal resonant state, has reached up to 280.04:1.00 for the rectangular TE1,0,20 resonant mode at 2.920GHz in S-band. Relative the traditional physical model before, the power gain of the new physical model increased by 51.86%; It has an important potential application to generate an ultra-high power microwave pulse of 28GW and 13ns in experiment rather than in theory. What the advanced technoloy and theory, see this letter to the international top SCI magzine of " <strong>IEEE Transactions on Microwave Theory and Techniques</strong> " .</p>

This study reviews the research progress of high-power electromagnetic pulse generation.It introduces the physical model, different technologies, and the experimental generation of ultrafast, ultrashort, and ultra-high-power electromagnetic pulses. Progress on the radiation effects of electromagnetic pulses and the measured damage thresholds of microcontroller and photo-electronic devices are also discussed. Finally, future research prospects in this field are suggested.

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