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Experimental Evaluation of the Statistical Isotropy of a Reverberation Chamber's Plane-Wave Spectrum



Ryan J. Pirkl, Kate Remley


Synthetic aperture measurements in a loaded reverberation chamber are used to calculate power-angle profiles describing the instantaneous distribution of received power versus azimuth angle-of-arrival. Averaging multiple power-angle profiles leads to estimates of the reverberation chamber's power-angle spectrum. A comparison to simulated power-angle spectra for a statistically isotropic scattering environment indicates that the loaded reverberation chamber tends to provide an anisotropic scattering environment. Analysis of the measurements' power delay-angle profiles suggest that this anisotropy is not solely due to the presence of unstirred multipath components; stirred specular multipath components arising due to reflections off of the mode-stirring paddles also contribute to the chamber's anisotropy. Guidelines are provided for minimizing the effect of a given chamber's anisotropy, such as using additional stirring mechanisms (e.g., position/platform stirring) and minimizing the contributions of unstirred multipath components.
IEEE Transactions on Electromagnetic Compatibility


antenna-environment multiple scattering, power-angle profile, power-angle spectrum, power-delay-angle profile, reverberation chamber


Pirkl, R. and Remley, K. (2013), Experimental Evaluation of the Statistical Isotropy of a Reverberation Chamber’s Plane-Wave Spectrum, IEEE Transactions on Electromagnetic Compatibility, [online],, (Accessed July 20, 2024)


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Created November 26, 2013, Updated October 12, 2021