Results 251 to 260 of about 6,836 (298)

Reverberant Chamber Enhancement

Journal of the IEST, 2015
Typical reverberant chambers used for High Intensity Acoustic Testing (HIAT) can achieve high sound pressure levels (SPL) across most of the applicable frequency range (20 Hz to 10 kHz), but they have limitations. Depending on the size of the chamber, low frequency chamber modes may be limited in the testing frequency range.
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Introduction to reverberation chamber test method and a two-stirrer mini-reverberation chamber

2002 3rd International Symposium on Electromagnetic Compatibility, 2003
As a time-efficient and cost-effective EMC test facility candidate, the reverberation chamber has attracted much attention from academia and industries. The objective of the paper is to introduce its general background, standardisation status and practical applications, highlighting some of merit and non-merit associated with the reverberation chamber ...
null Ya Jun Wang, null Wee Jin Koh, null Yeow Kwang Tai   +2 more
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FDTD-FVTD Comparisons in Reverberation Chamber

18th International Wroclaw Symposium and Exhibition on Electromagnetic Compatibility, 2006
Modelling of a Mode Stirred Reverberation Chamber (MSRC) using time-domain techniques is achieved by using Finite-Difference Time-Domain (FDTD) and Finite-Volume Time-Domain (FVTD) schemes. Advantages and difficulties related to time domain simulations in MSRC are underlined in this paper.
Lalléchère, Sébastien, Bonnet, Pierre, Paladian, Françoise   +2 more
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Reverberation chamber modeling using FDTD

1999 IEEE International Symposium on Electromagnetic Compatability. Symposium Record (Cat. No.99CH36261), 2003
This paper gives a definition of the uniformity of the reverberation chamber that is similar to the uniformity area as defined for the anechoic chamber, but is a volume instead of a plane. In this definition, the uniformity volume has 16 points in the space.
null Lizhou Bai, null Lin Wang, null Baikuan Wang, null Jianjian Song   +3 more
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Reverberation Chamber: Eine preiswerte Alternative zur Absorberhalle? (Reverberation Chamber: A Low-Cost Alternative to Anechoic Chambers?)

teme, 2002
In diesem Artikel wird die Modenverwirbelungskammer (engl.: Mode-Stirred Chamber, MSC) bzw. Feldvariable Kammer (FVK) als alternative Testumgebung für Störfestigkeitstests mit ihren spezifischen Vor- und Nachteilen vorgestellt. Grenzen eines derzeit diskutierten Normentwurfs werden aufgezeigt und mit entsprechenden Messwerten untermauert.
N. Eulig, A. Enders
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Time reversal and reverberation chambers

2018 IEEE Symposium on Electromagnetic Compatibility, Signal Integrity and Power Integrity (EMC, SI & PI), 2018
Presents a collection of slides covering the following topics: diffusive media; time reversal in diffusive media, and; wavefront synthesis.
Cozza, Andréa, Monsef, Florian
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Rationale for reverberation chamber testing

2013 US National Committee of URSI National Radio Science Meeting (USNC-URSI NRSM), 2013
Summary form only given. Several test facility options for conducting electromagnetic compatibility testing including immunity, emissions, and shielding effectiveness are available. Generally each facility provides a different test electromagnetic environment. A reverberation chamber is a cavity enclosed by conducting surfaces with a method of exciting
Vignesh Rajamani, Charles F. Bunting, Gustav J. Freyer   +2 more
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Qualification of WEAL Reverberation Chamber

The Journal of the Acoustical Society of America, 2001
Western Electro-Acoustic Laboratory (WEAL) has recently qualified a new reverberation chamber. Qualification measurements were performed for absorption testing (ASTM C423) and sound power testing (ANSI S12.31 and S12.32). Results are shown at various stages of the qualification.
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Design of Chaotic Reverberation Chambers

2019 URSI International Symposium on Electromagnetic Theory (EMTS), 2019
Deforming the geometry of a rectangular reverberation chamber (RC) improves the field disorder and the chaoticity of the RC field, even in presence of traditional stirring mechanisms. We study how position and number of hemispherical wall diffractors affect the transmission-based modal overlapping of a real life RC facility.
L. Bastianelli, F. Moglie, V. Mariani Primiani, G. Gradoni   +3 more
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Load Optimization in Reverberation Chambers

2021 15th European Conference on Antennas and Propagation (EuCAP), 2021
Optimal loading conditions of a reverberation chamber were investigated. The relevant figure of merit is discussed and defined. Multiple loading configurations were tested and results are reported. A simple model of how loading affects measurement uncertainty was developed and used to find a loading configuration that vastly improve results with ...
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