Results 51 to 60 of about 544,892 (367)
Angle-Dependent Absorption of Sound on Porous Materials
Acoustics, 2020 Sound-absorbing materials are usually measured in a reverberation chamber (diffuse field condition) or in an impedance tube (normal sound incidence). In this paper, we show how angle-dependent absorption coefficients could be measured in a factory-type ...
Jose Cucharero +2 more
doaj +1 more source
Environmental and Climate Technologies, 2023 Wood charcoal is a sustainable, renewable, and environmentally friendly material with the use that the acoustic device can produce. Charcoal made of wood waste materials allows for improving indoor acoustical quality.
Khrystoslavenko Olga +1 more
doaj +1 more source
Emission Test Method for Source Stirred Reverberation Chambers With Scalar Measurements
IEEE Access, 2023 This paper describes a novel method to reconstruct the radiated emission of a device under test placed in a reverberation chamber equipped with multiple monopole source stirring technique. The method is based on the measurement of the normal component of
Alfredo De Leo +2 more
doaj +1 more source
Studying the pulse regime in a reverberation chamber with a model based on image theory [PDF]
, 2010 6 pages - WOSInternational audienceIn this article, we propose a time-domain model of a reverberation chamber (RC). This very straightforward model based upon image theory (IT) allows to simulate the behavior of a reverberation chamber in the pulse ...
Amador, Emmanuel +3 more
core +3 more sources
Analysis of Plane Waves Spectra in a Weakly-Disturbed Flat Reverberation Chamber by Information Theory Criteria [PDF]
Radioengineering, 2018 This work aims to present the impact of disturbing the stationary modes in a rectangular-shaped reverberation chamber by small-dimensioned stirrers. The study focuses on plane wave’s modeling of the electric field inside a flat cavity using information ...
K. Nafkha, H. Ragad, A. Gharsallah
doaj
Correlation and Capacity Calculations with Reference Antennas in an Isotropic Environment
International Journal of Antennas and Propagation, 2012 A reverberation chamber is a convenient tool for over-the-air testing of MIMO devices in isotropic environments. Isotropy is typically achieved in the chamber through the use of a mode stirrer and a turntable on which the device under test (DUT) rides ...
Thorkild B. Hansen
doaj +1 more source
Reconciling Statistical Models with Practical Experience of Reverberation Chambers [PDF]
, 2009 Presented are novel theoretical probability density functions (PDF) for the magnitude and phase of electromagnetic fields inside reverberation chambers (RC) operating in a dasiagood-but-imperfect regime.
F.G. Canavero, Hill, Lemoine, R. Serra
core +1 more source
Applied Sciences, 2017 Recently, high frequency bands (above 6 GHz) have attracted more attention for the next generation communication systems due to the limited frequency resources below 6 GHz.
Xin Zhou +7 more
doaj +1 more source
Free-Space Antenna Field/Pattern Retrieval in Reverberation Environments
, 2005 Simple algorithms for retrieving free-space antenna field or directivity patterns from complex (field) or real (intensity) measurements taken in ideal reverberation environments are introduced and discussed.Comment: 6 pages, 2 figures, submitted to IEEE ...
Fiumara, Vincenzo +3 more
core +1 more source
A 5G Active Antenna Tile and its Characterization in a Reverberation Chamber
European Conference on Antennas and Propagation, 2020 This work presents a 5G active antenna tile system, enabling the flexible construction of hybrid beamforming (HBF) arrays. The proposed tile was fabricated using a standard PCB manufacturing process and to validate its performance.
Eduardo V. P. Anjos +5 more
semanticscholar +1 more source