Experimental Observations of the Minimum Dwell Time for Radiated Immunity Tests in a Vibrating Intrinsic Reverberation Chamber

Reverberation environments permit creating a statistically homogenous and isotropic electromagnetic field for testing electronic devices. Vibrating intrinsic reverberation chambers are one of the possible reverberation environments where successive, independent samples of the electromagnetic field values are generated through the vibrations of the flexible walls. In this paper, we investigate the test time (the dwell time) necessary for creating dataset of independent field sample values with homogenous statistics in a 1.5 m × 1.2 m × 1.0 m vibrating cavity. In particular, we present the results of an experimental study conducted at frequencies close the lowest usable frequency. We have compared empirical to simulated datasets showing that a prediction, based only on a theoretical approach, of the minimum dwell time could lead to large errors when non-idealities in the stirring process appear.