On the field uniformity of reverberation chambers – a global sensitivity analysis study
ISSN: 0332-1649
Article publication date: 28 August 2023
Issue publication date: 21 November 2023
Abstract
Purpose
Global sensitivity analysis (SA) by means of Sobol’ indices enhanced with different surrogate modeling techniques is performed in this work. The purpose is to investigate the influence of measurement uncertainties and the environment characteristics themselves on the desired field uniformity in reverberation chambers (RCs). This yields an efficient apparatus for the stirring and chamber design process.
Design/methodology/approach
The technique of Sobol’ indices, as a candidate of global SA methods, is suitable for high fluctuations due to its robustness, which can be addressed to the stochastic nature of the RC environment. The aim of using surrogate modeling techniques is to compute the indices efficiently with a moderate number of required simulations. The powerfulness of this approach is introduced in a simple numerical example in which the physical phenomena can be identified more straightforwardly.
Findings
This method can provide useful knowledge in the lower frequency range, where the ideal properties of the electromagnetic field in RCs cannot be established, and the importance of the setup parameters can vary from configuration to configuration. In addition, it can serve as a basis for setup adaptation during parallelized electromagnetic compatibility tests, which would result in a more time- and cost-saving option in industrial applications in the future.
Originality/value
Despite the previous attempts, a profound investigation of multiple setup parameters is still a hot topic. The main contribution of this work is the extension of the application area of the method of Sobol’ indices to RCs, which has not been done so far.
Keywords
Acknowledgements
The reported research has been carried out with the professional support of the Doctoral Student Scholarship Program, which was under the auspices of the Co-Operative Doctoral Program of the Ministry for Innovation and Technology from the source of the National Research Development and Innovation Fund. Furthermore, this work was supported by the Hungarian Scientific Research Fund under grant K-135307.
Citation
Kenderes, A., Gyimóthy, S. and Benkő, P.T. (2023), "On the field uniformity of reverberation chambers – a global sensitivity analysis study", COMPEL - The international journal for computation and mathematics in electrical and electronic engineering, Vol. 42 No. 5, pp. 1068-1080. https://doi.org/10.1108/COMPEL-01-2023-0027
Publisher
:Emerald Publishing Limited
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