Refining the Experimental Extraction of the Number of Independent Samples in a Mode-Stirred Reverberation Chamber

TL;DR

This paper improves the accuracy of estimating the number of independent samples in a mode-stirred reverberation chamber by refining the correlation length measurement and validating it through measurements and literature comparison.

Contribution

It introduces a linear interpolation method for more precise correlation length estimation and demonstrates its effectiveness across a wide frequency range.

Findings

Enhanced correlation length estimation accuracy.

Validation through high-resolution measurements.

Applicability over broad frequency spectrum.

Abstract

We investigate the number of independent samples in a chaotic reverberation chamber. Its evaluation as defined by the IEC standard can be made more precise when using not the index of the first value larger then the correlation length but using the value obtained by a linear interpolation instead. The results are validated by a juxtaposition with values from a measurement using a high stirrer-angle resolution. A comparison with estimates known from the literature validates our findings. An alternative approach using the local maxima of the parametric dependence of the transmission is presented in order to show the applicability of the extracted correlation length over a large range of frequencies.