Statistical Characterization of a Vibrating Intrinsic Reverberation Chamber using the AIRCMF Method and S11 Measurements

Abstract

Conventional reverberation chamber characterization methods, such as field uniformity measurements specified in IEC 61000-4-21, can be timeconsuming and require extensive spatial sampling. This work investigates the application of the Almost Ideal Reverberation Chamber Minimum Frequency (AIRCMF) method, originally proposed for conventional reverberation chambers, to a Vibrating Intrinsic Reverberation Chamber (VIRC) using S11 measurements. The AIRCMF methodology was applied by evaluating the Anderson-Darling test for the Rayleigh distribution of the stirred component and the sample correlation using the first-order autocorrelation coefficient. The results indicate that the distribution requirement was satisfied throughout the measured frequency range from 1.5 GHz to 4 GHz, while the correlation criterion became the limiting factor. An AIRCMF value of approximately 1.79 GHz was obtained under the tested conditions. These preliminary results demonstrate the application of the S11-based AIRCMF framework, previously implemented in VIRC’s, to statistically characterize a chamber under experimental testing, providing a concise assessment of correlation and distribution properties of the stirring process without requiring conventional fielduniformity measurements.