Influence of magnetic core on wave propagation process in spiral line

A compact structure with transformer core and spiral line was discussed in this paper. The core consisted of involute silicon steel sheets. The characteristic parameters, such as slow wave coefficient and wave transmission impedance of spiral line with core, were calculated. The design of the output parameters of the spiral pulse forming line (PFL) with core was given, and the corresponding numerical simulation was carried out. The results showed that in course of slow wave transmission on spiral line with core, inner and outer cylinder currents flowed along the core base. The smaller the radical thickness of core in comparison with radical size is, the less the influence of core on pulse formation is.