Energy localization effects within a reverberation chamber and their reduction in chaotic geometries

Abstract : A method of studying energy localization effects in a reverberation chamber is proposed and applied to simulation results. Its application to field spatial distributions of a classical reverberation chamber equipped with a mode stirrer shows a strong energy localization phenomenon of damaging effect on the field homogeneity. From the energy distributions it appears that this phenomenon is principally related to energy localization around the mode stirrer. To avoid the presence of a mode stirrer causing this phenomenon, an alternative shape of reverberation chamber, inspired from geometries of chaotic cavities, is pro- posed. The results obtained with this new cavity configuration show that the strong energy localizations are avoided and the resonant modes better contribute to the field uniformity and isotropy within the working volume.
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Kamardine Selemani, Elodie Richalot, Olivier Legrand, Odile Picon, Fabrice Mortessagne. Energy localization effects within a reverberation chamber and their reduction in chaotic geometries. IEEE Transactions on Electromagnetic Compatibility, Institute of Electrical and Electronics Engineers, 2017, 59 (2), pp.325. ⟨10.1109/TEMC.2016.2617322⟩. ⟨hal-01393157⟩

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