SOURCE STIRRING ANALYSIS FOR REVERBERATION CHAMBERS

The source stirring technique for reverberation chambers (RC) is obtained by several monopole antennas located on the chamber walls. The stirring action is accomplished subsequently feeding each antenna pairs covering all possible combinations. Antennas are fed by real generators and their length is not negligible with respect to the wavelength. An efficient way, that improves the modal series convergence, is presented to compute the electromagnetic field inside the large shielded room. Results are checked by means of typical RC parameters such as the cumulative distribution function (CDF), the polar plot of each field components and field uniformity. Out-of-phase dipole feeding allows to improve field uniformity especially in the lower frequency range.