EMC Concepts Explained

When two circuits are in the vicinity of one another, a signal propagating in one circuit can induce a signal in another circuit, due to capacitive (electric field) and/or inductive (magnetic field) coupling between the circuits. This phenomenon is referred to as crosstalk.

In this article, we consider the effects of a discontinuity along the transmission line which occurs when the transmission line characteristic impedance changes.

Consider a transmission line of length driven by a constant voltage source with a source resistance, and terminated by a resistive load.