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An essential guide to modern circuit board design based on simple physics and practical applications The fundamentals taught in circuit theory were never intended to work above a few megahertz, let alone at a gigahertz. While electronics is grounded in physics, most engineers' education in this area is too general and mathematical to be easily applied to the problem of high speed circuits. Left to their own devices, many engineers produce layouts that require expensive revisions in order to finally meet specifications. Fast Circuit Boards fills the gap in knowledge by providing clear,…mehr
An essential guide to modern circuit board design based on simple physics and practical applications The fundamentals taught in circuit theory were never intended to work above a few megahertz, let alone at a gigahertz. While electronics is grounded in physics, most engineers' education in this area is too general and mathematical to be easily applied to the problem of high speed circuits. Left to their own devices, many engineers produce layouts that require expensive revisions in order to finally meet specifications. Fast Circuit Boards fills the gap in knowledge by providing clear, down-to-earth guidance on designing digital circuit boards that function at high clock rates. By making the direct connection between physics and fast circuits, this book instills the fundamental universal principles of information transfer to give engineers a solid basis for hardware design. Using simple tools, simple physics, and simple language, this invaluable resource walks through basic electrostatics, magnetics, wave mechanics, and more to bring the right technology down to the working level. Designed to be directly relevant and immediately useful to circuit board designers, this book: * Properly explains the problems of fast logic and the appropriate tools * Applies basic principles of physics to the art of laying out circuit boards * Simplifies essential concepts scaled up to the gigahertz level, saving time, money, and the need for revisions * Goes beyond circuit theory to provide a deep, intuitive understanding of the mechanisms at work * Demonstrates energy management's role in board design through step function-focused transmission line techniques Engineers and technicians seeking a more systematic approach to board design and a deeper understanding of the fundamental principles at work will find tremendous value in this highly practical, long-awaited text.
RALPH MORRISON, MS, EE, is a consultant and lecturer in the area of interference control and electronics. As the former president of Instrum, he has thirty years of design and consulting experience, and is the author of Noise and Other Interfering Signals, Grounding and Shielding in Facilities, and Solving Interference Problems in Electronics.
Inhaltsangabe
Preface ix
1 Electric and Magnetic Fields 1
1.1 Introduction 2
1.2 Electrons and the Force Field 8
1.3 The Electric Field and Voltage 11
1.4 Electric Field Patterns and Charge Distributions 14
1.5 Field Energy 17
1.6 Dielectrics 19
1.7 Capacitance 20
1.8 Capacitors 21
1.9 The D or Displacement Field 21
1.10 Mutual and Self Capacitance 22
1.11 Current Flow in a Capacitance 23
1.12 The Magnetic Field 24
1.13 The B Field of Induction 27
1.14 Inductance 28
1.15 Inductors 30
1.16 The Inductance of a Solenoid in Air 32
1.17 Magnetic Field Energy Stored in Space 33
1.18 Mutual Inductance 34
1.19 Transformer Action 35
1.20 Poynting's Vector 35
1.21 Resistors and Resistance 36
Problem Set 39
Glossary 39
Answers to Problems 42
2 Transmission Lines--Part 1 43
2.1 Introduction 43
2.2 The Ideal World 44
2.3 Transmission Line Representations 45
2.4 Characteristic Impedance 47
2.5 Waves and Wave Velocity 48
2.6 The Balance of Field Energies 50
2.7 A Few Comments on Transmission Lines 51
2.8 The Propagation of a Wave on a Transmission Line 51
2.9 Initial Wave Action 53
2.10 Reflections and Transmissions at Impedance Transitions 55