Results 21 to 30 of about 13,244 (302)

Diffuseness Quantification in a Reverberation Chamber and Its Variation with Fine-Resolution Measurements

open access: yesBuildings, 2021
Insufficient diffuseness is the major cause of the poor repeatability and reproducibility of building acoustical measurements in a reverberation chamber. Inaccurate results were reported for the prevailing methods in ISO and ASTM standards. Many previous
Shuying Zhang, Joonhee Lee
doaj   +1 more source

"Good-but-Imperfect" electromagnetic reverberation in a VIRC [PDF]

open access: yes, 2011
Novel theoretical probability density functions (PDF) of electromagnetic fields inside reverberation chambers operating in a “good-but-imperfect‿ regime have been recently reported. The present work reports on the application and assessment of these PDFs
Canavero, Flavio   +2 more
core   +2 more sources

A Fast Finite-Difference Time Domain Simulation Method for the Source-Stirring Reverberation Chamber

open access: yesInternational Journal of Antennas and Propagation, 2017
Numerical analysis methods are often employed to improve the efficiency of the design and application of the source-stirring reverberation chamber. However, the state of equilibrium of the field inside the chamber is hard to reach.
Wenxing Li, Chongyi Yue, Atef Elsherbeni
doaj   +1 more source

A study of uncertainty models in a reverberation chamber at NIST [PDF]

open access: yes, 2012
The reverberation chamber has become a good alternative for over-the-air (OTA) testing of small antennas. Here the uncertainty of total radiated power measurements is evaluated for a reverberation chamber at National Institute of Standards and Technology
Engvall, Erik   +3 more
core   +1 more source

Frequency characterization of reverberation chambers [PDF]

open access: yesProceedings of Symposium on Electromagnetic Compatibility, 2002
A series of measurements to investigate the modal structure of a reverberation chamber were conducted at the Dahlgren Division of the Naval Surface Warfare Center, Dahlgren, Virginia. These measurements were Phase I of a project to determine the frequency dependent characteristics of the fields in a reverberation chamber.
M.O. Hatfield, M.B. Slocum
openaire   +1 more source

Reverberation Chamber Modeling Based on Image Theory: Investigation in the Pulse Regime [PDF]

open access: yes, 2010
WOSInternational audienceIn this paper we propose a straight- forward 3D time domain model of a reverberation chamber (RC) based on image theory. This model allows one to describe the earliest moments of an arbi- trary waveform in an RC.
Amador, Emmanuel   +3 more
core   +3 more sources

MIMO LTE OTA measurements in reverberation chamber: rich isotropic reference environment makes agreement with theoretical system model [PDF]

open access: yes, 2012
The reverberation chamber has during the last 10 years been developed into an accurate instrument for OTA measurements, having a well-defined rich isotropic multipath environment.
Carlberg, Ulf   +2 more
core   +1 more source

Modeling system throughput of single and multi-port wireless LTE devices [PDF]

open access: yes, 2012
We have recently introduced a simple theoretical model for estimating the relative throughput of LTE devices. We validated the model through measurements performed in reverberation chamber for 1×2 SIMO with 90ns channel delay spread. In the present paper,
Durisi, Giuseppe   +2 more
core   +1 more source

Emission Test Method for Source Stirred Reverberation Chambers With Scalar Measurements

open access: yesIEEE 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

Advanced radar absorbing ceramic-based materials for multifunctional applications in space environment [PDF]

open access: yes, 2018
In this review, some results of the experimental activity carried out by the authors on advanced composite materials for space applications are reported.
Albano, M.   +6 more
core   +1 more source

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