Theoretical and experimental study on folded film dielectric parallel-plates Blumlein line

The characteristic parameters of a folded film dielectric parallel-plates Blumlein line were analyzed theoretically. The equivalent circuit model was simulated using Pspice software considering the effect of switch inductance and parasitic impedance on the output waveform. Simulating result shows that the increase in switch inductance slows the rise edge and distorts the fall edge of the pulses, introducing reflections as well. The parasitic impedance causes some power loss in the device so that the output pulse amplitude is lower than expected. The electromagnetic field distributions were simulated. The electric field distortion at the rim and bend part of the film electrode must be considered in the insulation design of the folded parallel-plates Blumlein line. Based on the theoretical a