Source: http://www.jpier.org/PIER/pier.php?paper=12091807
Timestamp: 2019-04-26 03:58:12+00:00

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This paper evaluates the mode-stirring efficiency in terms of uncorrelated positions of a mechanical stirrer operating inside a reverberation chamber (RC). The actual RC is simulated and viewed as a multivariate random process: the chamber field is sampled in a lattice of spatial points distributed uniformly over a volume of arbitrary dimensions. By adopting such a grid, the stirrer efficiency is then computed through the correlation matrix, accounting for the residual correlation between stirrer positions. The second-order statistics are calculated averaging over the sampling volume. Results are presented for two stirrers that move in both synchronous and interleaved mode. A comparison with the traditional circular correlation (CC) method, for the determination of the uncorrelated positions, is done showing how CC overestimates stirrer efficiency.
G. Gradoni, V. Mariani Primiani, and F. Moglie, "Reverberation Chamber as a Multivariate Process: FDTD Evaluation of Correlation Matrix and Independent Positions," Progress In Electromagnetics Research, Vol. 133, 217-234, 2013.
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