Development of 4-stage transmission line pulse transformer

The optimization theory of a transmission line pulse transformer(TLT) has been introduced, and a 4-stage TLT was built and tested based on the theory. Magnetic cores used in this TLT met the optimization requirement of the TLT structure without coupling between stages. Coaxial cables with good flexibility were used, and the secondary line inductance of each stage was 1.83, 3.52 and 5.41 mH respectively, which was up to the preset goal. Through a Blumlein pulsed generator, a pulse with a voltage up to 10 kV, a duration of 150 ns and a rise-time about 20 ns was injected into the TLT. Then at the output terminal of the TLT, a pulse with an amplitude of 40 kV, a duration of 150 ns and a rise-time slightly larger than 20 ns was obtained. The result indicates that the pulse’s basic shape can be