emc

This is the third and final article discussing four different circuit models of transmission lines in sinusoidal steady state. This article uses Model 4 to determine the locations of the minima and maxima of standing waves. This determination is first done analytically, followed by the graphical method using the Smith chart.

High-Intensity Radiated Fields (HIRF) are powerful man-made electromagnetic emissions that can disrupt aircraft electronics. Researchers from military and aviation agencies have extensively studied these fields to understand their potential risks and develop protective certification standards.

The month's Banana Skins covers various electromagnetic interference issues in different contexts. It discusses problems with video projectors affecting audio induction loops, switch-mode power supply emissions varying with voltage, hybrid vehicle EM emissions, computer interference with amateur radio, electrostatic discharge in fluid lines, and communication equipment in ambulances causing radio interference.

Understanding current flow patterns is crucial in EMC engineering, particularly the distinction between Common Mode and Differential Mode currents. Controlling current paths and providing local return paths helps reduce electromagnetic interference and improve immunity.

This series of articles delves into the design principles of power filters for switched-mode power converters and similar applications, focusing on conducted and radiated emissions. Part 1 provides an overview of filter design principles, emphasizing the need for specialized approaches to meet EMC specifications in an increasingly electrified and sustainable world.

Young EMC engineers often wonder where some of the rules of EMC originated. The answer is frequently found in the history of the EMC Society and the early work of a cadre of intelligent and active engineers who spearheaded the formation of the Society. This article highlights the story of some of these engineering professionals and their contributions to the engineering solutions practiced by today’s EMC engineers.

Uncover the crucial role of LISNs - the unsung heroes ensuring reliable electromagnetic testing in aerospace. This insider look reveals their ingenious design and why standardization matters for replicable results.

We are proud to carry on the tradition of sharing Banana Skins for the purpose of promoting education for EMI/EMC engineers.

This article presents the derivation of the radiated far fields from a Hertzian dipole antenna above the ground plane using image theory.

The Banana Skin columns were compiled by Keith Armstrong, of Cherry Clough Consultants Ltd, from items he found in various publications, and anecdotes and links sent in by the many fans of the column.