Experimental investigation of electromagnetic ...
Document type :
Compte-rendu et recension critique d'ouvrage
Title :
Experimental investigation of electromagnetic reverberation characteristics as a function of UWB frequencies
Author(s) :
Bamba, Aliou [Auteur]
Commissariat à l'énergie atomique et aux énergies alternatives - Laboratoire d'Electronique et de Technologie de l'Information [CEA-LETI]
Martinez-Ingles, Maria-Teresa [Auteur]
Gaillot, Davy [Auteur]
Institut d’Électronique, de Microélectronique et de Nanotechnologie - UMR 8520 [IEMN]
Télécommunication, Interférences et Compatibilité Electromagnétique - IEMN [TELICE - IEMN]
Tanghe, Emmeric [Auteur]
Department of Information Technology
Hanssens, Brecht [Auteur]
Molina-Garcia-Pardo, Jose-Maria [Auteur]
Lienard, Martine [Auteur]
Institut d’Électronique, de Microélectronique et de Nanotechnologie - UMR 8520 [IEMN]
Martens, Luc [Auteur]
Department of Information Technology
Joseph, Wout [Auteur]
Department of Information Technology
Commissariat à l'énergie atomique et aux énergies alternatives - Laboratoire d'Electronique et de Technologie de l'Information [CEA-LETI]
Martinez-Ingles, Maria-Teresa [Auteur]
Gaillot, Davy [Auteur]
Institut d’Électronique, de Microélectronique et de Nanotechnologie - UMR 8520 [IEMN]
Télécommunication, Interférences et Compatibilité Electromagnétique - IEMN [TELICE - IEMN]
Tanghe, Emmeric [Auteur]
Department of Information Technology
Hanssens, Brecht [Auteur]
Molina-Garcia-Pardo, Jose-Maria [Auteur]
Lienard, Martine [Auteur]
Institut d’Électronique, de Microélectronique et de Nanotechnologie - UMR 8520 [IEMN]
Martens, Luc [Auteur]
Department of Information Technology
Joseph, Wout [Auteur]
Department of Information Technology
Journal title :
IEEE Antennas and Wireless Propagation Letters
Pages :
859-862
Publisher :
Institute of Electrical and Electronics Engineers
Publication date :
2015-04
ISSN :
1536-1225
English keyword(s) :
Time-frequency analysis
Laboratories
Bandwidth
Q-factor
Reverberation
Laboratories
Bandwidth
Q-factor
Reverberation
HAL domain(s) :
Sciences de l'ingénieur [physics]
English abstract : [en]
The electromagnetic reverberation time characteristics of indoor environments are experimentally investigated from 2 to 10 GHz. At a given frequency, the reverberation time is observed to be approximately constant for ...
Show more >The electromagnetic reverberation time characteristics of indoor environments are experimentally investigated from 2 to 10 GHz. At a given frequency, the reverberation time is observed to be approximately constant for bandwidths up to 900 MHz (or larger). Moreover, the reverberation time decreases for increasing frequencies. Based on the theory of electromagnetic fields in cavities, a model to predict a room's quality factor, reverberation time value, and average absorption coefficient is developed for the first time. The validity and robustness of the model is investigated with data obtained for various environments, central frequencies, and bandwidths. As a validation, the model is applied to another room from 2 to 10 GHz and a maximum (resp. average) relative error of 22.30% (resp. 8.80%) was obtained with a rms error of 1.90 ns. Furthermore, good agreement is obtained with results reported in the literature with settings falling into the model range; scenarios for which relative errors smaller than 10% were computed. The results demonstrate that this approach is not only an accurate alternative to the reverberation time measurements and computations in indoor environments from 2 to 10 GHz, but also a viable route to link propagation mechanisms in indoor scenarios with reverberation chambers.Show less >
Show more >The electromagnetic reverberation time characteristics of indoor environments are experimentally investigated from 2 to 10 GHz. At a given frequency, the reverberation time is observed to be approximately constant for bandwidths up to 900 MHz (or larger). Moreover, the reverberation time decreases for increasing frequencies. Based on the theory of electromagnetic fields in cavities, a model to predict a room's quality factor, reverberation time value, and average absorption coefficient is developed for the first time. The validity and robustness of the model is investigated with data obtained for various environments, central frequencies, and bandwidths. As a validation, the model is applied to another room from 2 to 10 GHz and a maximum (resp. average) relative error of 22.30% (resp. 8.80%) was obtained with a rms error of 1.90 ns. Furthermore, good agreement is obtained with results reported in the literature with settings falling into the model range; scenarios for which relative errors smaller than 10% were computed. The results demonstrate that this approach is not only an accurate alternative to the reverberation time measurements and computations in indoor environments from 2 to 10 GHz, but also a viable route to link propagation mechanisms in indoor scenarios with reverberation chambers.Show less >
Language :
Anglais
Popular science :
Non
Source :
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