High-power microwave pulse generator based on Tesla transformer with double primary circuit and bipolar power supply

Background The high-power microwave pulse generator based on Tesla transformer and coaxial pulse-forming line (PFL) possesses advantages such as excellent waveform quality, high output power, and strong reliability, making it one of the key research directions of pulsed power technology in high repetitive frequency.

Purpose This study aims to propose and develop a high-power microwave pulse generator based on Tesla transformer with double primary circuit and bipolar power supply, providing a significant platform for the stable and reliable operation of high-power microwave systems.

Methods Tesla transformer, as the step-up equipment, is embedded in outer cylinder of pulse-forming line. The low-voltage side with double primary circuit and bipolar power supply is adopted in Tesla transformer, which is aimed at accelerating the charging speed of the pulse-forming line and simplifying the secondary winding of the transformer. The chamber of main switch integrates the trigger pulse generator, the circulating air system, and the cooling system, enabling the pulse generator to operate at high frequency for extended periods.

Results When the charging voltage is 600 V, the output voltage is approximately 608 kV, and the output current is approximately 31 kA. The results show that the output power of the device reaches 18 GW, the pulse duration is approximately 58 ns, and the continuous operation time lasts 11 minutes at the repetitive frequency of 100 Hz.

Conclusions The pulse generator, as a stable and reliable experimental platform, is mainly applied to study the generation, transmission and radiation of the narrow-band, wide-band or ultra-wide-band high-power microwave.