Efficient improvement of measurement system of smart meter and application of broadband EMI filter

Electromagnetic interference is a troublesome problem to measurement test engineer, especial for RF susceptibilty measuring system. In this paper, the propagating characteristics and conducting routing of electromagnetic interference noise from the RF radiated susceptibility (RS) testing system of smart meter are analyzed, a broad EMI filter is designed to cut off the conducting routing to refrain the disturbance of RF electromagnetic noise.