A round-robin test on effectiveness of a VHF LISN for radiated emission measurements

VCCI Technical Sub-committee has investigated the dispersion of radiated emission measurement results. It was confirmed that one of the main cause of the dispersion of radiated emission measurement results was the difference of the power line-to-ground impedance of the power supply for the equipment under test (EUT). For the improvement of the dispersion, VCCI Council manufactured the experimental VHF LISN (Very High Frequency Line Impedance Stabilization Network). And we performed a round-robin test on the effectiveness of the VHF LISN.