A shielding effectiveness prediction method for coupled reverberant cavities validated on a real object

Sergio Fernandez Romero, Guadalupe Gutierrez and Ivan Gonzalez

Journal of Electromagnetic Waves and Applications, 2015, vol. 29, issue 14, 1829-1840

Abstract: In the last years, different works on reverberant microwave propagation and high frequency coupling inside oversized structures have been published in order to make progress in the investigation of wireless systems and electromagnetic threats. In this paper, a new focus to the shielding effectiveness (SE) prediction using the reverberation microwave propagation formalism has been applied to a real complex object attaining very good agreement with the measured data obtained from nested reverberation chamber method. The used formalism is the combination of the simplified propagation model with the updated and more accurate formulation for cavity Q-factor and energy dissipation mechanisms. A very wide frequency range, from 500 MHz to 40 GHz, has been analyzed, which allows us to draw conclusions about how each parameter affects the final SE result at different frequency bands. Furthermore, a tuning study has been performed taking into account the tolerance in the most important parameters, such as the cavity size, the Q-factor, the main dissipation energy mechanisms, and the aperture shapes.

Date: 2015
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DOI: 10.1080/09205071.2015.1044619

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