Importance of Performance Improvement for Inter Laboratory Comparison (ILC) of Radiated Emission Measurements

The key factors that influence the Radiated Emission (RE) measurement results of Inter Laboratory Comparison (ILC) program, conducted as part of proficiency testing/Quality Assurance of EMC test laboratory are presented in this paper. The evaluated classical Z score results and overall performance of the participant EMC test laboratories in ILC program are affected by these factors. The performance improvement techniques to address the influencing factors and eliminate the deviation in test results of ILC program are outlined in detail. A case study was conducted in the frequency range from 30 MHz to 1 GHz, as the deviation in Z score results is predominant below 1 GHz. The importance of awareness required to conduct ILC program accurately with minimum possible errors is highlighted in this paper.