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

Published

Author(s)

Ryan J. Pirkl, Kate Remley

Abstract

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.
Citation
IEEE Transactions on Electromagnetic Compatibility
Volume
56
Issue
3

Keywords

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

Citation

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], https://doi.org/10.1109/TEMC.2013.2289302, https://tsapps.nist.gov/publication/get_pdf.cfm?pub_id=912807 (Accessed February 29, 2024)
Created November 26, 2013, Updated October 12, 2021