A Cavity Green's Function Boundary Element Method With Spectral Domain Acceleration for Modeling of Reverberation Chambers

Abstract

A novel boundary element method approach with the rectangular cavity Green's function is presented and utilized to model reverberation chambers. Different from all other approaches that employ rectangular cavity Green's functions, the computationally expensive part of the matrix-vector product is evaluated in the spectral domain. A drastic acceleration is achieved even though the algorithm operates with excellent accuracy. The approach is validated and compared against the boundary element method with free-space Green's function. Examples demonstrate the usability of the proposed approach.