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Principles of Electromagnetic Compatibility
Understand both the theory and practice of electromagnetic compatibility with this groundbreaking textbook
Electromagnetic compatibility (EMC), the ability of a device or system to maintain its operations in an electromagnetic environment without interference with itself or other devices, is a fundamental component of any electrical engineering design process. Understanding the basic principles of EMC is essential to undertaking even the most basic project; this understanding is attained by reinforcing the theory with laboratory exercises.
Principles of Electromagnetic Compatibility is one of the first textbooks on EMC principles that includes laboratory exercises at the end of each chapter, that any engineer or student can perform with standard EMC laboratory equipment. This enables readers to connect theory to practice and combines general precepts with supporting simulations and hands-on experimentation. The result is an indispensable guide to this cornerstone of electrical engineering.
Principles of Electromagnetic Compatibility readers will also find:
* ALTIUM files available online which allow users to create and print their own circuit boards
* Detailed treatment of subjects including Frequency Spectra, EM Coupling Mechanisms, Non-Ideal Components, Power Distribution Network, EMC Filters, Transmission Lines, Radiation, Shielding, Return Current Flow, and more
Principles of Electromagnetic Compatibility is a must-own for students and practicing engineers looking for a comprehensive EMC principles guide.
Inhaltsverzeichnis
Preface xiii
About the Companion Website xv
1 Frequency Spectra of Digital Signals 1
1.1 EMC Units 1
1.1.1 Logarithm and Decibel Definition 1
1.1.2 Power and Voltage (Current) Gain in dB 1
1.1.3 EMC dB Units 3
1.2 Fourier Series Representation of Periodic Signals 6
1.3 Spectrum of a Clock Signal 7
1.4 Effect of the Rise Time, Signal Amplitude, Fundamental Frequency, and Duty Cycle on the Signal Spectrum 15
1.4.1 Effect of the Rise Time 15
1.4.2 Effect of the Signal Amplitude 15
1.4.3 Effect of the Fundamental Frequency 18
1.4.4 Effect of the Duty Cycle 20
1.5 Laboratory Exercises 22
1.5.1 Spectrum of a Digital Clock Signal 22
1.5.2 Laboratory Equipment and Supplies 22
1.5.3 Measured Spectrum vs. Calculated Spectrum 23
1.5.4 Effect of the Rise Time 27
1.5.5 Effect of the Signal Amplitude 31
1.5.6 Effect of the Fundamental Frequency 33
1.5.7 Effect of the Duty Cycle 37
References 43
2 EM Coupling Mechanisms 45
2.1 Wavelength and Electrical Dimensions 45
2.1.1 Concept of a Wave 45
2.1.2 Uniform Plane EM Wave in Time Domain 46
2.1.3 Uniform Plane EM Wave in Frequency Domain 47
2.2 EMC Interference Problem 50
2.3 Capacitive Coupling 53
2.3.1 Shielding to Reduce Capacitive Coupling 56
2.4 Inductive Coupling 59
2.4.1 Shielding to Reduce Inductive Coupling 61
2.5 Crosstalk Between PCB Traces 66
2.6 Common-Impedance Coupling 70
2.7 Laboratory Exercises 72
2.7.1 Crosstalk Between PCB Traces 72
References 76
3 Non-Ideal Behavior of Passive Components 77
3.1 Resonance in RLC Circuits 77
3.1.1 "Pure" Series Resonance - Non-Ideal Capacitor Model 77
3.1.2 "Pure" Parallel Resonance - Ferrite Bead Model 81
3.1.3 "Hybrid" Series Resonance - Non-Ideal Resistor Model 83
3.1.4 "Hybrid" Parallel Resonance - Non-Ideal Inductor Model 85
3.2 Non-Ideal Behavior of Resistors 87
3.2.1 Circuit Model and Impedance 87
3.2.2 Parasitic Capacitance Estimation - Discrete Components 89
3.2.3 Parasitic Capacitance Estimation - PCB Components 94
3.3 Non-Ideal Behavior of Capacitors 97
3.3.1 Circuit Model and Impedance 97
3.3.2 Parasitic Inductance Estimation - Discrete Components 99
3.3.3 Parasitic Inductance Estimation - PCB Components 101
3.4 Non-Ideal Behavior of Inductors 104
3.4.1 Circuit Model and Impedance 104
3.4.2 Parasitic Capacitance Estimation - Discrete Components 106
3.4.3 Parasitic Capacitance Estimation - PCB Components 108
3.5 Non-Ideal Behavior of a PCB Trace 111
3.5.1 Circuit Model and Impedance 111
3.6 Impact of the PCB Trace Length on Impedance of the Passive Components 114
3.6.1 Impedance of a Resistor - Impact of the PCB Trace 114
3.6.2 Impedance of a Capacitor - Impact of the PCB Trace 114
3.6.3 Impedance of an Inductor - Impact of the PCB Trace 114
3.6.4 Impedance of an Inductor vs. Impedance of the PCB Trace 118
3.7 Laboratory Exercises 118
3.7.1 Non-Ideal Behavior of Capacitors and Inductors, and Impact of the PCB Trace Length on Impedance 118
3.7.2 Laboratory Equipment and Supplies 119
3.7.3 Laboratory Procedure - Non-Ideal Behavior of Capacitors and Inductors 121
3.7.4 Laboratory Procedure - Impact of the PCB Trace Length on Impedance 122
References 122
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Über den Autor / die Autorin
Bogdan Adamczyk, PhD, is Professor and Director of the Electromagnetic Compatibility Center at Grand Valley State University, Grand Rapids, Michigan, USA. He has published extremely widely on EMC compliance and EMC education and has extensive industry experience, including a practice performing EMC pre-compliance testing for industry.
