Median filters to suppress interference

Median filters can be successfully used to eliminate impulsive interference and noise on signal lines overcoming the difficulties of linear filters, which are not suitable to address this problem. Median and median type filters have been popular for the last forty years; they found their main applications in image and speech processing. Unfortunately they are rather unknown to the EMC community. The purpose of this paper is to illustrate the practical implementation of median filters in system applications addressed to meet the demanding requirements of EMC problems.