Sensitivity analysis with various parameters in undermoded reverberation chambers

Author:

Kenderes Anett,Gyimóthy Szabolcs,Benk Péter Tamás

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.

Publisher

Emerald

Reference22 articles.

1. Effect of size, orientation, and eccentricity of mode stirrers on their performance in reverberation chambers;IEEE Transactions on Electromagnetic Compatibility,2006

2. Influence of stirrer vibration during stepwise operation of a reverberation chamber,2022

3. A spectral approach for the determination of the reverberating chamber quality factor;IEEE Transactions on Electromagnetic Compatibility,1998

4. Requirements for an effective reverberation chamber: unloaded or loaded;IEEE Transactions on Electromagnetic Compatibility,2006

Cited by 1 articles. 订阅此论文施引文献 订阅此论文施引文献,注册后可以免费订阅5篇论文的施引文献,订阅后可以查看论文全部施引文献

1. On the Equivalence of Working Volumes in Undermoded Reverberation Chambers;2024 IEEE 21st Biennial Conference on Electromagnetic Field Computation (CEFC);2024-06-02

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