Asymmetric reverberation chambers for EMC measurements

In this paper, asymmetric chambers (especially a conducting triangular chamber) are investigated as an alternative structure for rectangular EMC reverberation chambers. The prime considerations of designing such a system are given to the total possible number of modes inside the chamber and the mode density function, though some other parameters are equally important. A new approach is introduced to obtain these parameters for a triangular chamber and the initial study has demonstrated that triangular chambers may offer better performance in some cases than their rectangular counterparts. It is suggested that a completely asymmetrical chamber may do not need a stirrer to generate a uniformly distributed field within such a chamber for EMC tests if the operating frequency is high enough