Field-to-enclosure coupling in reverberation chamber: numerical and experimental analysis

The paper presents a study of the coupling between an external field and a metallic enclosure with a long aperture in the frequency range which includes several box resonances. A reverberation chamber is considered as a field generation structure. A customized FDTD code is used to calculate the current induced by the external field in a loop placed inside the enclosure. In order to simulate the reverberation chamber the field is represented by a proper superposition of random plane waves. Numerical results are experimentally validated. The proposed method is useful to investigate the performance of the enclosure during its early design stage, before the prototype realization