Insertion Loss Estimation of EMI Filters in Unmatched Input/Output Impedance System

Abstract

One of the problems in the design of powerline EMI filters is the uncertainty and ambiguity of their source/load impedances which results in breach of expected filter parameters in a real installation. The paper presents a simple technique for prediction of insertion loss limit values of EMI filters working in arbitrary unmatched mains line impedance systems.

Keywords

• EMI mains filter
• insertion loss
• estimation
• impedance termination
• unmatched impedance system