Computational and experimental studies for probe ring radius in MIMO OTA test systems

The effect of the probe ring size in OTA test systems was studied based on simulations and OTA measurements in the anechoic chamber of the University of Oulu. The results are presented for two methodologies: Prefaded Synthesis (PFS) and Plane Wave Synthesis (PWS). Each size and synthesis type was validated for UMI and Uma radio channel models and for the cases the DUT in free space and in phantom hand.