Results 1 to 10 of about 1,490 (262)

Metasurfaced Reverberation Chamber [PDF]

Scientific Reports, 2018
The concept of metasurfaced reverberation chamber (RC) is introduced in this paper. It is shown that by coating the chamber wall with a rotating 1-bit random coding metasurface, it is possible to enlarge the test zone of the RC while maintaining the ...
Hengyi Sun, Zhuo Li, Changqing Gu, Qian Xu, Xinlei Chen, Yunhe Sun, Shengchen Lu, Ferran Martin   +7 more
doaj   +6 more sources

Characterization of Reverberation Chamber - A Comprehensive Review [PDF]

IEEE Access, 2020
This study presents a comprehensive review of the characterization techniques of a reverberation chamber (RC). After describing the limitations of the theoretical models for the determination of the lowest usable frequency (LUF) of a chamber, the ...
Jawad Yousaf, Wansoo Nah, Mousa I. Hussein, Jun Gyu Yang, Amir Altaf, Manzoor Elahi   +5 more
doaj   +2 more sources

Experimental Investigation of the Metasurfaced Reverberation Chamber

Electronics (Switzerland), 2023
To verify the concept of the metasurfaced reverberation chamber (MRC) which was proposed. This paper reports on measurements in the reverberation chamber (RC) performance by using a 1-bit random coding metasurfaced stirrer. The measurement results are validated and compared with that from two mechanical stirrers (horizontal stirrer and vertical stirrer)
Hengyi Sun, Yaoran Zhang, Changqing Gu   +2 more
exaly   +2 more sources

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

Buildings, 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
exaly   +3 more sources

A High-Resolution Time Reversal Method for Target Localization in Reverberant Environments [PDF]

Sensors
Reverberation in real environments is an important factor affecting the high resolution of target sound source localization (SSL) methods. Broadband low-frequency signals are common in real environments.
Huiying Ma, Tao Shang, Gufeng Li, Zhaokun Li   +3 more
doaj   +2 more sources

Impact of Temperature and Relative Humidity on Reverberation Time in a Reverberation Room

Buildings, 2022
Changes in acoustic parameters measured in a room may depend on the location and orientation of the sound source and microphones or on the reverberation conditions of the room.
Artur Nowoświat
doaj   +1 more source

Linking a one-dimensional reverberation chamber model with real Reverberation Chambers [PDF]

2008 International Symposium on Electromagnetic Compatibility - EMC Europe, 2008
Our work focuses on the study of a simple yet complete one-dimensional reverberation chamber model presented previously. The statistical properties of the fields are introduced either by varying the width or the relative dielectric constant of a perturbing lossless layer. Our aim is to show the excellent agreement between this simple model and real RCs.
Serra R., CANAVERO, Flavio
openaire   +2 more sources

Experimental Investigation of 5G Base Station Functionalities in Reverberation Chamber at Millimeter-Wave

IEEE Access, 2023
The performance and functionalities of a commercial fifth generation base station are evaluated inside the reverberation chamber at the mmWave frequency range.
Michele Colombo, Riccardo Diamanti, Luca Bastianelli, Gabriele Gradoni, Emanuel Colella, Valter Mariani Primiani, Franco Moglie, Davide Micheli   +7 more
doaj   +1 more source

Chasing the Wave in a Reverberation Chamber [PDF]

2018 International Symposium on Electromagnetic Compatibility (EMC EUROPE), 2018
The power-delay profile is a critical characteristic of a reverberation chamber. In this paper the power-delay profile is used for the first time to study in high detail how a wave interacts with its environment in a reverberation chamber. This is done by tracking the wave, starting from its creation at the antenna reference plane with the antenna in ...
Bronckers, L.A., Roc'h, A., Smolders, A.B.   +2 more
openaire   +2 more sources

Optimization of Stirrer Designs in a Reverberation Chamber [PDF]

IEEE Transactions on Electromagnetic Compatibility, 2005
This paper describes an investigation into the key factors which contribute to an effective mode stirrer. The work concentrates on the lower frequency range, since all stirrers have poorer performance at low frequencies. The stirrer's shapes and sizes have been investigated, together with an optimization of the finer details in the stirrer's shape. The
Clegg, J, Marvin, A C, Dawson, J F, Porter, S J   +3 more
openaire   +3 more sources