Simulation based analysis of field correlation and ergodicity of a reverberation chamber

The electromagnetic fields in an electromagnetic reverberation chamber (ERC) with a rotating mode stirrer are numerically determined for each stirrer position via a finite element (FE) simulation. With these results both a correlation analysis according to the present engineering standard is performed and the spatial variation of the field averaged over all stirrer positions is computed. Thus, it is studied how far the notions of correlation and ergodicity of the chamber are related. With an efficient FE simulation at hand, further studies comprising loaded chambers and geometry optimization for electromagnetic compatibility testing will become possible.