A Reverberation Chamber (RC) is analyzed with techniques issued from the wave chaos domain. The first 200 modes are determined numerically: their cumulated number is separated into a smooth part, predicted by the Weyl formula, and an oscillating part, interpreted in term of periodic orbits. The technique of the nearest-neighbor spacing...
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2009 (v1)Journal articleUploaded on: December 4, 2022
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2007 (v1)Journal article
Wave chaos theory is used to study a modeled reverberation chamber (RC). The first 200 modes of an RC at a given stirrer position are determined by the finite element method, and the Weyl formula is checked for various RC geometries, from integrable to chaotic. The eigenfrequency spacing distribution varies according to the degree of ray chaos...
Uploaded on: February 28, 2023 -
April 2017 (v1)Journal articleEnergy localization effects within a reverberation chamber and their reduction in chaotic geometries
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...
Uploaded on: February 28, 2023 -
2015 (v1)Journal article
Using the knowledge gained from the wave chaos theory, we present simple shapes of resonant cavities obtained by inserting metallic hemispheres or caps on the walls of a parallelepiped-shaped cavity. The presented simulation results show a significant improvement of the field statistical properties when the number of hemispheres or caps...
Uploaded on: October 11, 2023 -
March 2014 (v1)Publication
Cet article présente une étude de la réponse électromagnétique d'une chambre réverbérante (CR) chaotique en présence de pertes. Au moyen de simulations et d'expériences, sont comparées les fluctuations des maxima du champ obtenus dans une CR à brassage de modes conventionnelle et dans une CR chaotique au voisinage de la fréquence minimum...
Uploaded on: March 26, 2023 -
2015 (v1)Journal article
Using the knowledge gained from the wave chaos theory, we present simple shapes of resonant cavities obtained by inserting metallic hemispheres or caps on the walls of a parallelepiped-shaped cavity. The presented simulation results show a significant improvement of the field statistical properties when the number of hemispheres or caps...
Uploaded on: December 2, 2022 -
November 12, 2015 (v1)Journal article
This article presents a study of the electromagnetic re- sponse of a chaotic reverberation chamber (RC) in the pres- ence of losses. By means of simulations and of experi- ments, the fluctuations in the maxima of the field obtained in a conventional mode-stirred RC are compared with those in a chaotic RC in the neighborhood of the Lowest...
Uploaded on: December 4, 2022 -
September 7, 2015 (v1)Conference paper
An alternative approach to the International Standard criteria used to assess the well-operating of a reverberation chamber (RC) is proposed. The considered indicators, inspired from studies on chaotic cavities, rely on the properties of the cavity resonant frequencies. The new proposed approach aims to reduce the measurement duration and...
Uploaded on: March 26, 2023 -
September 2013 (v1)Conference paper
The use of stochastic approaches for the electromagnetic characterization of complex systems is illustrated in two cases that are reverberation chambers and urban environment. Several stochastic approaches are adopted in both cases, from a perturbative approach to the determination of distributions; the indications they provide as well as the...
Uploaded on: December 3, 2022 -
September 2013 (v1)Conference paper
The use of stochastic approaches for the electromagnetic characterization of complex systems is illustrated in two cases that are reverberation chambers and urban environment. Several stochastic approaches are adopted in both cases, from a perturbative approach to the determination of distributions; the indications they provide as well as the...
Uploaded on: October 11, 2023