Near-field coupling model between electronic systems and a transmission line

Abstract

This paper presents an analysis of radiated electromagnetic disturbances between electronic devices (parasitic emission source) and a transmission line. The study aims to model the coupling and for this purpose, two concepts are combined: the emission source is modelled by an array of elementary dipoles (electric and magnetic) and the induced voltage in the transmission line is calculated from the equivalent sources radiation by two different approaches. The first one is totally analytical and is based on the transmission line theory and Taylor model. The second one uses the insertion of equivalent sources into an electromagnetic simulation tool. To validate our model we apply it for two cases: a passive system and an active one disturbing a transmission line.