Theoretical investigation of microwave breakdown ignition in OMUX filters. A 3D numerical modeling approach

A description of microwave breakdown in output multiplexer filter is presented in this paper. Such a phenomenon can affect the device and cause irreversible damage. It is so necessary to be able to predict the power level which can generate such a microwave breakdown. To study this problem, a multidisciplinary approach with a combination of three fields of science was used: electromagnetic, thermal transfer theory and plasma physics. In this paper new 1D and 3D numerical investigations of microwave breakdown in OMUX filters are presented.