Conformal FDTD Simulation of Vibrating Intrinsic Reverberation Chambers

We introduce a novel simulation procedure devoted to the inner field evaluation of arbitrary-shape reverberation chambers especially well-suited for the analysis of Vibrating Intrinsic Reverberation Chambers (VIRC). The described method is based on conformal Finite-Difference in Time-Domain (FDTD) modeling to account for the rough surface geometry of the VIRC walls. On this point, we took full advantage of the meshing capability of the in-house numerical code TEMSI developped by XLIM. Performance criteria typically introduced to evaluate the overall efficiency of conventional reverberation chambers (RC) are extracted from the computed S11 of a log-periodic antenna meshed within the under-study resonant cavity. Numerical out-comes demonstrate excellent agreement with experimental results in similar conditions.