Aspects of GTEM to OATS measurement correlation

The GTEM cell is a broadband transverse electromagnetic waveguide working up to 1 GHz. The OATS is the standard environment for emission measurements. GTEM cell data have to be correlated to the OATS results. This paper describes two methods of performing this correlation and investigates their performance. Measurements in a GTEM cell and on an OATS have been taken and the results have been compared. Special attention is given to problems associated with the reduction of the measurement effort.