A solution to relax breakdown threshold in waveguide filters

While characterizing OMUX filters at atmospheric pressure, electrical breakdown can occur involuntarily and damage the equipment. The phenomenon of breakdown was studied and our objective was to propose a multi-physical modeling, in order to predict the critical input power which can generate such a microwave breakdown. In this paper we present the microwave breakdown threshold at several frequency bands and we propose a solution to relax the microwave breakdown threshold.