Validation and Use of a Vibrating Intrinsic Reverberation Chamber for Radiated Immunity Tests

A Vibrating Intrinsic Reverberation Chamber (VIRC) has been installed in a semi-anechoic chamber that is normally used for electromagnetic interference test in the automotive industry and its performances evaluated. This hybrid strategy permits converting a traditional semi-anechoic chamber into a reverberating environment in a few hours. Furthermore, the proposed solution makes possible the use of two different types of testing environment without searching for additional space in the testing house. The work analyzes some figure of merits that are normally used for traditional reverberation chambers like the autocorrelation of the electromagnetic field and its statistical uniformity and isotropy properties. The analysis is performed in the frequency range from 100 MHz to 6 GHz in a 26 m x 8 m x 6 m cavity. The experimental datasets are finally tested through a goodness-of-fit test for checking their convergence to theoretical values.