Spatial Correlation Functions of Fields in a Reverberation Chamber Based on Expansion of Spherical Bessel Functions

摘要

On the basis of Hill's plane-wave angular spectrum theory presented for well-stirred fields in a reverberation chamber, we have derived the spatial correlation functions for complex electric field components in terms of summation representation through Legendre polynomials and spherical Bessel functions, and the results agree with previously published results derived by other approaches. Reverberation chambers are experiencing increased use for radiated emissions and immunity measurements. They are large multimoded cavities wherein the electromagnetic field is stochastically uniform and isotropic. A sufficient degree of uniformity and isotropy can be accomplished through mechanical stirring, frequency stirring, introducing corrugated walls, wires and diffusers based on acoustic theory, etc.. Both deterministic and statistical mode theories have been used to analyze reverberation chambers and show good agreement with experimental results.