Comparison on Convergence of Measurements in Reverberation Chamber for Different Channel Bandwidths

Reverberation chambers are used to measure mobile devices on various standards from 2G onwards to 5G. Theoretical work has been performed to access the impact of the signal bandwidth on the rate of conversion in a reverberation chamber measurement, but a quantitative analysis across standards is missing. A device is used to measure Total Radiated Power (TRP) and Total Isotropic Sensitivity (TIS) for 2G, WCDMA, LTE and 5G in a Bluetest RTS65 to show the rate of convergence and the sampled values are mapped to the expected distributions. Consistent with theoretical predictions, measurements show that a higher signal bandwidth leads to a faster rate of convergence in reverberation chamber tests.