Geometry and Loading Effects on Performances of Mode-Stirred Reverberation Chambers: An Experimental Study

In this paper, we aim at highlighting the specific roles of the geometry and loading in a mode-stirred reverberation chamber. A geometrical modification is achieved through the introduction of several metallic caps on the cavity walls, in order to fulfill chaoticity requirements. Loading modifications are achieved by putting absorbers on ground. Tests have been performed in three reverberation chambers of different dimensions, and thus, of different lowest usable frequencies. Respective and combined roles of both types of modification are analyzed and clarified.