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International Journal of Antennas and Propagation
Volume 2012, Article ID 483287, 7 pages
http://dx.doi.org/10.1155/2012/483287
Research Article

On the Relationship between Field Amplitude Distribution, Its Maxima Distribution, and Field Uniformity inside a Mode-Stirred Reverberation Chamber

OSA Department, XLim Laboratory, UMR CNRS 6172, University of Limoges, 123 avenue Albert Thomas, 87060 Limoges Cedex, France

Received 2 December 2011; Accepted 24 January 2012

Academic Editor: David A. Sanchez-Hernandez

Copyright © 2012 M. A. García-Fernández et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

Abstract

A mode-stirred reverberation chamber (RC) is nowadays a commonly accepted performing tool for over-the-air (OTA) communication system evaluation, and their standardization is underway. Before performing active measurements of wireless communication systems using an RC, field uniformity inside the RC working volume has to be measured following the calibration method described in IEC standards 61000-4-21 and 61000-4-3, which requires 24 calibration measurements of field amplitude. In this contribution, we present the statistical laws that describe electromagnetic field maxima distribution, and based on them, a novel expression that could be useful to obtain a lower limit for the number of stirrer positions required at least to obtain a specific value for the normalized dispersion used to evaluate field uniformity with the IEC calibration method, being therefore of particular interest for OTA measurements.