Modelling of a spark gap switch

High voltage Marx generator along with a high pressure spark gap switch is a key component in systems that generate high power microwaves. This paper presents modelling and analysis of high pressure spark gap switch. In this paper, the three-dimensional static and dynamic electromagnetic spark gap model is simulated using computer simulation technology (CST) electromagnetic studio and microwave studio. The resistance and inductance model of the switch is developed and analysed to study the peak voltage of the output pulse generated by the switch for gases under different pressure.