Sensitivity analysis with various parameters in undermoded reverberation chambers
ISSN: 0332-1649
Article publication date: 3 July 2024
Issue publication date: 30 July 2024
Abstract
Purpose
The purpose of this paper is to investigate the influence of measurement uncertainties and the environment characteristics themselves on the desired field uniformity (FU) in reverberation chambers (RCs) by means of state-of-the-art global sensitivity analysis techniques. There are many quantities to describe the FU. The authors attempted to inspect many of the most important ones in two different orientations of the stirrer (horizontal, vertical).
Design/methodology/approach
Surrogate modelling techniques are involved to compute the Sobol’ indices efficiently with a modest number of required electromagnetic (EM) simulations. This can be only achieved if the behaviour of an appropriately chosen output quantity is predictable in such a way, which enables to extract useful information. Therefore, this choice should be made with extra care of the stochastic fluctuations, which have to be as low as possible. To this end, in this paper, various figures of merit are investigated.
Findings
This method can provide useful knowledge in the lower frequency range, where the ideal properties of the EM field in RCs cannot be established, and the importance of the setup parameters can vary from configuration to configuration.
Originality/value
Considering the current research tendencies related to RCs, the application of the method of Sobol’ indices to RCs is unique, which has only been done by the authors of this work so far. The main contribution presented in the paper is the thorough investigation of the effect of configuration parameters on the statistical properties of RCs through many output quantities describing the FU.
Keywords
Acknowledgements
The reported research has been performed with the help of the professional support of the Doctoral Student Scholarship Program, under the auspices of the Cooperative Doctoral Program of the Ministry for Innovation and Technology from the source of the National Research Development and Innovation Fund. Moreover, the work was supported by the Hungarian Scientific.
Citation
Kenderes, A., Gyimóthy, S. and Benk, P.T. (2024), "Sensitivity analysis with various parameters in undermoded reverberation chambers", COMPEL - The international journal for computation and mathematics in electrical and electronic engineering, Vol. 43 No. 4, pp. 948-961. https://doi.org/10.1108/COMPEL-11-2023-0585
Publisher
:Emerald Publishing Limited
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