High power microwave driver using folded plate Blumlein line

A compact high power microwave(HPM) driver using a folded plate Blumlein line is introduced. The folded plate Blumlein line uses Kapton film as the transmission dielectric and pure transformer oil as the insulation medium. The whole size of this Blumlein line is 1.00 m×0.40 m×0.15 m. The HPM source used a C-band magnetically insulated oscillator(MILO) with characteristic resistance of about 12 Ω. The folded plate Blumlein line delivers energy to the cathode of the MILO to produce an intense electron beam of 550 kV, 40 kA and 90 ns, and a high power microwave with peak power of 350 MW and pulse width of 45 ns radiates from the C-band MILO.