Theoretical procedure to convert anechoic radiated emission measurements to OATS equivalent results for arbitrary radiators

In the last years, there has been certain interest in unifying installations for radiated immunity tests (which require a completely anechoic environment) and radiated emission tests (OATS). The possibility of making radiated emission tests in completely anechoic chambers has been suggested. Such a possibility poses the problem of obtaining equivalent results with the new system to those obtained with the standardized one. This paper presents a general approach to that problem, including the possibility of extrapolating results from anechoic measurements at 3 meters to OATS measurements at 10 meters.