EMC-PCBBest practice in circuit board designTim Jarvis AbstractThis paper introduces the basic principals of EM wave propagation within printed circuit board (PCB) structures. Only with a grasp of the basic principals can the design engineer select the most appropriate ‘best practice’ rules and methods and apply them correctly. The paper demonstrates this principal in evaluating the usefulness of power planes in PCB layout. Having established the paradigm that ‘there is no substitute for a first principals understanding’ the paper goes on to describe a number of good practice design rules with reference to real world examples.BSc CEng MIEE MIEEEKTL-HullFurthermore the direction of propagation is orthogonal to both. Remember this basic rule as all that follows is built upon it. The simplest……