Design and experiments of stacked Blumlein nano-second pulse forming lines

A kind of compact stacked Blumlein nano-second pulse forming lines was studied in this paper, and the effect of circuits distribution parameter on output voltage of 2-staged stacked Blumlein pulse forming lines (PFLs) was analyzed and simulated by PSpice. The results show that the switchs on-resistance reduces the amplitude of output voltage, and the influence of the switchs inductance is greater than the influence of the loads inductance. The electromagnetic coupling effect of 2-stage Blumlein PFLs with different stacked structures was simulated by using XFDTD based on the principle of finite difference time domain method. The experiments of multi-stage stacked Blumlein PFLs were performed. The results show that, stacked Blumlein PFLs, based on ceramic solid-state transmission lines and GaAs photoconductive switches, achieve the superposition of output voltage, which could generate a nano-second high-voltage pulse.