Development of Low Cost Measurement System for Radiated Emission Evaluation

Abstract

Abstract-In this paper, a low cost measurement system with high accuracy for radiated emission evaluation has been proposed. By combining the test data of the current probe at different positions on the harness, the measurement accuracy is improved compared with conventional single probe method. For the sake of high accuracy, a transfer function is built to map the relationship between anechoic chamber method and current probe method. Based on experiments for evaluation, the final estimation of radiated emission agrees well with the measured results in anechoic chamber. For the cases tested, the difference between the current probe method and the anechoic chamber method is less than 3 dB.

Estimating the Reduction of Radiated Emissions From TFT-LCD Panel Using Network Analyzer With a Bulk Current Injection Probe

“…A literature review shows that radiated emissions from TFT-LCD panel have diverse ways [23][24][25][26]. The DC supply loop is one of the major radiation mechanisms because it may behave like an antenna, radiating the noises that were coupled from the T-CON.…”