Observation of maximal and average field values in a reverberation chamber

The theoretical field strength values in reverberant environments can easily be approximated using the well-established models. In the near-average range of the distribution a very good agreement can be reached and is used in many applications. The estimation of the maximal field strengths is, however, difficult due to certain assumptions. The complexity of real reverberant cavities is too high for analytical and even numerical approach. This study focuses on the experimental way using a Vibrating Intrinsic Reverberation Chamber (VIRC). The randomness of movement of flexible walls of a VIRC is exploited by conducting long, 1 hour measurements to obtain many independent samples. Statistical analysis of the data is conducted to evaluate the maximal, average, and their ratio as functions of both number of samples and measurement time.