Preface |
|
xiii | |
|
1 Introduction to Electromagnetic Compatibility (EMC) |
|
|
1 | (34) |
|
|
2 | (7) |
|
1.2 Electrical Dimensions and Waves |
|
|
9 | (7) |
|
1.3 Decibels and Common EMC Units |
|
|
16 | (14) |
|
1.3.1 Signal Source Specification |
|
|
24 | (6) |
|
|
30 | (5) |
|
|
31 | (3) |
|
|
34 | (1) |
|
2 EMC Requirements for Electronic Systems |
|
|
35 | (36) |
|
2.1 Governmental Requirements |
|
|
36 | (26) |
|
2.1.1 Requirements for Commercial Products Marketed in the United States |
|
|
36 | (4) |
|
2.1.2 Requirements for Commercial Products Marketed Outside the United States |
|
|
40 | (4) |
|
2.1.3 Requirements for Military Products Marketed in the United States |
|
|
44 | (4) |
|
2.1.4 Measurement of Emissions for Verification of Compliance |
|
|
48 | (1) |
|
2.1.4.1 Radiated Emissions |
|
|
49 | (2) |
|
2.1.4.2 Conducted Emissions |
|
|
51 | (3) |
|
2.1.5 Typical Product Emissions |
|
|
54 | (6) |
|
2.1.6 A Simple Example to Illustrate the Difficulty in Meeting the Regulatory Limits |
|
|
60 | (2) |
|
2.2 Additional Product Requirements |
|
|
62 | (1) |
|
2.2.1 Radiated Susceptibility (Immunity) |
|
|
62 | (1) |
|
2.2.2 Conducted Susceptibility (Immunity) |
|
|
62 | (1) |
|
2.2.3 Electrostatic Discharge (ESD) |
|
|
62 | (1) |
|
2.2.4 Requirements for Commercial Aircraft |
|
|
63 | (1) |
|
2.2.5 Requirements for Commercial Vehicles |
|
|
63 | (1) |
|
2.3 Design Constraints for Products |
|
|
63 | (1) |
|
2.4 Advantages of EMC Design |
|
|
64 | (7) |
|
|
66 | (3) |
|
|
69 | (2) |
|
3 Signal Spectra--the Relationship between the Time Domain and the Frequency Domain |
|
|
71 | (62) |
|
|
71 | (22) |
|
3.1.1 The Fourier Series Representation of Periodic Signals |
|
|
74 | (8) |
|
3.1.2 Response of Linear Systems to Periodic Input Signals |
|
|
82 | (4) |
|
3.1.3 Important Computational Techniques |
|
|
86 | (7) |
|
3.2 Spectra of Digital Waveforms |
|
|
93 | (20) |
|
3.2.1 The Spectrum of Trapezoidal (Clock) Waveforms |
|
|
93 | (3) |
|
3.2.2 Spectral Bounds for Trapezoidal Waveforms |
|
|
96 | (1) |
|
3.2.2.1 Effect of Rise/Falltime on Spectral Content |
|
|
97 | (8) |
|
3.2.2.2 Bandwidth of Digital Waveforms |
|
|
105 | (3) |
|
3.2.2.3 Effect of Repetition Rate and Duty Cycle |
|
|
108 | (1) |
|
3.2.2.4 Effect of Ringing (Undershoot/Overshoot) |
|
|
109 | (2) |
|
3.2.3 Use of Spectral Bounds in Computing Bounds on the Output Spectrum of a Linear System |
|
|
111 | (2) |
|
|
113 | (5) |
|
|
115 | (2) |
|
3.3.2 Peak Versus Quasi-Peak Versus Average |
|
|
117 | (1) |
|
3.4 Representation of Nonperiodic Waveforms |
|
|
118 | (3) |
|
3.4.1 The Fourier Transform |
|
|
119 | (2) |
|
3.4.2 Response of Linear Systems to Nonperiodic Inputs |
|
|
121 | (1) |
|
3.5 Representation of Random (Data) Signals |
|
|
121 | (12) |
|
|
124 | (8) |
|
|
132 | (1) |
|
4 Transmission Lines and Signal Integrity |
|
|
133 | (88) |
|
4.1 The Transmission-Line Equations |
|
|
136 | (3) |
|
4.2 The Per-Unit-Length Parameters |
|
|
139 | (16) |
|
4.2.1 Wire-Type Structures |
|
|
141 | (10) |
|
4.2.2 Printed Circuit Board (PCB) Structures |
|
|
151 | (4) |
|
4.3 The Time-Domain Solution |
|
|
155 | (15) |
|
4.3.1 Graphical Solutions |
|
|
156 | (11) |
|
|
167 | (3) |
|
4.4 High-Speed Digital Interconnects and Signal Integrity |
|
|
170 | (22) |
|
4.4.1 Effect of Terminations on the Line Waveforms |
|
|
170 | (4) |
|
4.4.1.1 Effect of Capacitive Terminations |
|
|
174 | (2) |
|
4.4.1.2 Effect of Inductive Terminations |
|
|
176 | (1) |
|
4.4.2 Matching Schemes for Signal Integrity |
|
|
177 | (2) |
|
4.4.3 When Does the Line Not Matter, i.e., When is Matching Not Required? |
|
|
179 | (1) |
|
4.4.4 Effects of Line Discontinuities |
|
|
180 | (12) |
|
4.5 Sinusoidal Excitation of the Line and the Phasor Solution |
|
|
192 | (18) |
|
4.5.1 Voltage and Current as Functions of Position |
|
|
193 | (6) |
|
|
199 | (1) |
|
4.5.3 Inclusion of Losses |
|
|
200 | (2) |
|
4.5.4 Effect of Losses on Signal Integrity |
|
|
202 | (8) |
|
4.6 Lumped-Circuit Approximate Models |
|
|
210 | (11) |
|
|
212 | (7) |
|
|
219 | (2) |
|
5 Nonideal Behavior of Components |
|
|
221 | (66) |
|
|
222 | (10) |
|
5.1.1 Resistance and Internal Inductance of Wires |
|
|
223 | (6) |
|
5.1.2 External Inductance and Capacitance of Parallel Wires |
|
|
229 | (1) |
|
5.1.3 Lumped Equivalent Circuits of Parallel Wires |
|
|
230 | (2) |
|
5.2 Printed Circuit Board (PCB) Lands |
|
|
232 | (3) |
|
5.3 Effect of Component Leads |
|
|
235 | (2) |
|
|
237 | (6) |
|
|
243 | (8) |
|
|
251 | (4) |
|
5.7 Ferromagnetic Materials--Saturation and Frequency Response |
|
|
255 | (3) |
|
|
258 | (3) |
|
|
261 | (3) |
|
5.10 Electromechanical Devices |
|
|
264 | (5) |
|
|
265 | (2) |
|
|
267 | (1) |
|
|
267 | (1) |
|
|
268 | (1) |
|
5.11 Digital Circuit Devices |
|
|
269 | (1) |
|
5.12 Effect of Component Variability |
|
|
270 | (1) |
|
|
270 | (17) |
|
5.13.1 Arcing at Switch Contacts |
|
|
271 | (3) |
|
|
274 | (1) |
|
|
275 | (3) |
|
|
278 | (6) |
|
|
284 | (3) |
|
6 Conducted Emissions and Susceptibility |
|
|
287 | (38) |
|
6.1 Measurement of Conducted Emissions |
|
|
288 | (6) |
|
6.1.1 The Line Impedance Stabilization Network (LISN) |
|
|
288 | (3) |
|
6.1.2 Common- and Differential-Mode Currents Again |
|
|
291 | (3) |
|
|
294 | (16) |
|
6.2.1 Basic Properties of Filters |
|
|
294 | (3) |
|
6.2.2 A Generic Power Supply Filter Topology |
|
|
297 | (1) |
|
6.2.3 Effect of Filter Elements on Common- and Differential-Mode Currents |
|
|
298 | (5) |
|
6.2.4 Separation of the Conducted Emissions into Common- and Differential-Mode Currents for Diagnostic Purposes |
|
|
303 | (7) |
|
|
310 | (9) |
|
6.3.1 Linear Power Supplies |
|
|
311 | (1) |
|
6.3.2 Switched-Mode Power Supplies (SMPS) |
|
|
312 | (3) |
|
6.3.3 Effect of Power Supply Components on Conducted Emissions |
|
|
315 | (4) |
|
6.4 Power Supply and Filter Placement |
|
|
319 | (2) |
|
6.5 Conducted Susceptibility |
|
|
321 | (4) |
|
|
321 | (2) |
|
|
323 | (2) |
|
|
325 | (72) |
|
7.1 Elemental Dipole Antennas |
|
|
325 | (7) |
|
7.1.1 The Electric (Hertzian) Dipole |
|
|
325 | (5) |
|
7.1.2 The Magnetic Dipole (Loop) |
|
|
330 | (2) |
|
7.2 The Half-Wave Dipole and Quarter-Wave Monopole Antennas |
|
|
332 | (10) |
|
|
342 | (7) |
|
7.4 Characterization of Antennas |
|
|
349 | (16) |
|
7.4.1 Directivity and Gain |
|
|
349 | (5) |
|
|
354 | (2) |
|
|
356 | (3) |
|
7.4.4 Effects of Balancing and Baluns |
|
|
359 | (3) |
|
7.4.5 Impedance Matching and the Use of Pads |
|
|
362 | (3) |
|
7.5 The FRIIs Transmission Equation |
|
|
365 | (3) |
|
7.6 Effects of Reflections |
|
|
368 | (13) |
|
7.6.1 The Method of Images |
|
|
368 | (1) |
|
7.6.2 Normal Incidence of Uniform Plane Waves on Plane, Material Boundaries |
|
|
368 | (8) |
|
|
376 | (5) |
|
7.7 Broadband Measurement Antennas |
|
|
381 | (7) |
|
7.7.1 The Biconical Antenna |
|
|
381 | (4) |
|
7.7.2 The Log-Periodic Antenna |
|
|
385 | (3) |
|
7.8 Antenna Modeling and Simulation |
|
|
388 | (9) |
|
7.8.1 Why Model Antennas? |
|
|
388 | (1) |
|
|
389 | (1) |
|
|
389 | (1) |
|
|
390 | (5) |
|
|
395 | (2) |
|
8 Radiated Emissions and Susceptibility |
|
|
397 | (48) |
|
8.1 Simple Emission Models for Wires and PCB Lands |
|
|
398 | (25) |
|
8.1.1 Differential-Mode Versus Common-Mode Currents |
|
|
398 | (4) |
|
8.1.2 Differential-Mode Current Emission Model |
|
|
402 | (3) |
|
8.1.3 Common-Mode Current Emission Model |
|
|
405 | (5) |
|
|
410 | (4) |
|
8.1.5 Experimental Results |
|
|
414 | (9) |
|
8.2 Simple Susceptibility Models for Wires and PCB Lands |
|
|
423 | (22) |
|
8.2.1 Experimental Results |
|
|
433 | (2) |
|
8.2.2 Shielded Cables and Surface Transfer Impedance |
|
|
435 | (3) |
|
|
438 | (5) |
|
|
443 | (2) |
|
|
445 | (112) |
|
9.1 Three-Conductor Transmission Lines and Crosstalk |
|
|
446 | (3) |
|
9.2 The Transmission-Line Equations for Lossless Lines |
|
|
449 | (3) |
|
9.3 The Per-Unit-Length Parameters |
|
|
452 | (24) |
|
9.3.1 Homogeneous Versus Inhomogeneous Media |
|
|
452 | (2) |
|
9.3.2 Wide-Separation Approximations for Wires |
|
|
454 | (9) |
|
9.3.3 Numerical Methods for Other Structures |
|
|
463 | (5) |
|
9.3.3.1 Wires with Dielectric Insulations (Ribbon Cables) |
|
|
468 | (4) |
|
9.3.3.2 Rectangular Cross-Section Conductors (PCB Lands) |
|
|
472 | (4) |
|
9.4 The Inductive-Capacitive Coupling Approximate Model |
|
|
476 | (24) |
|
9.4.1 Frequency-Domain Inductive-Capacitive Coupling Model |
|
|
479 | (2) |
|
9.4.1.1 Inclusion of Losses: Common-Impedance Coupling |
|
|
481 | (3) |
|
9.4.1.2 Experimental Results |
|
|
484 | (6) |
|
9.4.2 Time-Domain Inductive-Capacitive Coupling Model |
|
|
490 | (4) |
|
9.4.2.1 Inclusion of Losses: Common-Impedance Coupling |
|
|
494 | (1) |
|
9.4.2.2 Experimental Results |
|
|
495 | (5) |
|
|
500 | (29) |
|
9.5.1 Per-Unit-Length Parameters |
|
|
500 | (3) |
|
9.5.2 Inductive and Capacitive Coupling |
|
|
503 | (7) |
|
9.5.3 Effect of Shield Grounding |
|
|
510 | (8) |
|
|
518 | (1) |
|
9.5.5 Effects of Multiple Shields |
|
|
519 | (2) |
|
9.5.6 MTL Model Predictions |
|
|
521 | (8) |
|
|
529 | (28) |
|
9.6.1 Per-Unit-Length Parameters |
|
|
530 | (3) |
|
9.6.2 Inductive and Capacitive Coupling |
|
|
533 | (6) |
|
|
539 | (7) |
|
9.6.4 Effects of Balancing |
|
|
546 | (3) |
|
|
549 | (6) |
|
|
555 | (2) |
|
|
557 | (36) |
|
10.1 Shielding Effectiveness |
|
|
561 | (2) |
|
10.2 Shielding Effectiveness: Far-Field Sources |
|
|
563 | (13) |
|
|
564 | (3) |
|
10.2.2 Approximate Solution |
|
|
567 | (1) |
|
|
568 | (2) |
|
|
570 | (1) |
|
10.2.2.3 Multiple-Reflection Loss |
|
|
570 | (3) |
|
|
573 | (3) |
|
10.3 Shielding Effectiveness: Near-Field Sources |
|
|
576 | (5) |
|
10.3.1 Near Field Versus Far Field |
|
|
576 | (4) |
|
|
580 | (1) |
|
|
580 | (1) |
|
10.4 Low-Frequency, Magnetic Field Shielding |
|
|
581 | (4) |
|
10.5 Effects of Apertures |
|
|
585 | (8) |
|
|
589 | (1) |
|
|
590 | (3) |
|
|
593 | (90) |
|
11.1 Changing the Way we Think About Electrical Phenomena |
|
|
597 | (8) |
|
11.1.1 Nonideal Behavior of Components and the Hidden Schematic |
|
|
597 | (4) |
|
11.1.2 "Electrons Do Not Read Schematics" |
|
|
601 | (2) |
|
11.1.3 What Do We Mean by the Term "Shielding" |
|
|
603 | (2) |
|
11.2 What do we Mean by the Term "Ground" |
|
|
605 | (31) |
|
|
608 | (2) |
|
|
610 | (2) |
|
11.2.3 Ground Bounce and Partial Inductance |
|
|
612 | (3) |
|
11.2.3.1 Partial Inductance of Wires |
|
|
615 | (5) |
|
11.2.3.2 Partial Inductance of PCB Lands |
|
|
620 | (1) |
|
11.2.4 Currents Return to Their Source on the Paths of Lowest Impedance |
|
|
621 | (5) |
|
11.2.5 Utilizing Mutual Inductance and Image Planes to Force Currents to Return on a Desired Path |
|
|
626 | (3) |
|
11.2.6 Single-Point Grounding, Multipoint Grounding, and Hybrid Grounding |
|
|
629 | (5) |
|
11.2.7 Ground Loops and Subsystem Decoupling |
|
|
634 | (2) |
|
11.3 Printed Circuit Board (PCB) Design |
|
|
636 | (19) |
|
11.3.1 Component Selection |
|
|
637 | (1) |
|
11.3.2 Component Speed and Placement |
|
|
637 | (2) |
|
11.3.3 Cable I/O Placement and Filtering |
|
|
639 | (2) |
|
11.3.4 The Important Ground Grid |
|
|
641 | (1) |
|
11.3.5 Power Distribution and Decoupling Capacitors |
|
|
641 | (10) |
|
11.3.6 Reduction of Loop Areas |
|
|
651 | (1) |
|
11.3.7 Mixed-Signal PCB Partitioning |
|
|
652 | (3) |
|
11.4 System Configuration and Design |
|
|
655 | (17) |
|
|
655 | (1) |
|
11.4.2 Power Line Filter Placement |
|
|
656 | (1) |
|
11.4.3 Interconnection and Number of Printed Circuit Boards |
|
|
657 | (1) |
|
11.4.4 Internal Cable Routing and Connector Placement |
|
|
658 | (1) |
|
11.4.5 PCB and Subsystem Placement |
|
|
659 | (1) |
|
11.4.6 PCB and Subsystem Decoupling |
|
|
659 | (1) |
|
11.4.7 Motor Noise Suppression |
|
|
660 | (1) |
|
11.4.8 Electrostatic Discharge (ESD) |
|
|
661 | (11) |
|
|
672 | (11) |
|
11.5.1 The Concept of Dominant Effect in the Diagnosis of EMC Problems |
|
|
674 | (6) |
|
|
680 | (1) |
|
|
681 | (2) |
|
Appendix A The Phasor Solution Method |
|
|
683 | (10) |
|
A.1 Solving Differential Equations for their Sinusoidal, Steady-State Solution |
|
|
683 | (4) |
|
A.2 Solving Electric Circuits for Their Sinusoidal, Steady-State Response |
|
|
687 | (6) |
|
|
689 | (3) |
|
|
692 | (1) |
|
Appendix B The Electromagnetic Field Equations and Waves |
|
|
693 | (60) |
|
|
694 | (7) |
|
|
701 | (19) |
|
|
701 | (10) |
|
|
711 | (5) |
|
|
716 | (3) |
|
B.2.4 Conservation of Charge |
|
|
719 | (1) |
|
B.2.5 Constitutive Parameters of the Medium |
|
|
719 | (1) |
|
|
720 | (4) |
|
B.4 Sinusoidal Steady State |
|
|
724 | (1) |
|
|
725 | (1) |
|
|
726 | (15) |
|
|
729 | (5) |
|
|
734 | (3) |
|
|
737 | (1) |
|
B.6.4 Conductors versus Dielectrics |
|
|
738 | (2) |
|
|
740 | (1) |
|
B.7 Static (DC) Electromagnetic Field Relations--a Special Case |
|
|
741 | (12) |
|
B.7.1 Maxwell's Equations for Static (DC) Fields |
|
|
742 | (1) |
|
B.7.1.1 Range of Applicability for Low-Frequency Fields |
|
|
742 | (1) |
|
B.7.2 Two-Dimensional Fields and Laplace's Equation |
|
|
743 | (1) |
|
|
744 | (8) |
|
|
752 | (1) |
|
Appendix C Computer Codes for Calculating the Per-Unit-Length (PUL) Parameters and Crosstalk of Multiconductor Transmission Lines |
|
|
753 | (12) |
|
C.1 WTDESEP.FOR for Computing the PUL Parameter Matrices of Widely Spaced Wires |
|
|
754 | (4) |
|
C.2 RIBBON.FOR for Computing the PUL Parameter Matrices of Ribbon Cables |
|
|
758 | (2) |
|
C.3 PCB.FOR for Computing The PUL Parameter Matrices of Printed Circuit Boards |
|
|
760 | (1) |
|
C.4 MSTRP.FOR for Computing the PUL Parameter Matrices of Coupled Microstrip Lines |
|
|
761 | (1) |
|
C.5 STRPLINE.FOR for Computing the PUL Parameter Matrices of Coupled Striplines |
|
|
762 | (3) |
|
Appendix D A Spice (PSPICE, LTSPICE, etc.) Tutorial and Applications Guide |
|
|
765 | (58) |
|
D.1 Creating a Spice or Pspice Simulation |
|
|
766 | (11) |
|
D.1.1 Circuit Description |
|
|
767 | (4) |
|
D.1.2 Execution Statements |
|
|
771 | (2) |
|
|
773 | (1) |
|
|
774 | (3) |
|
D.2 Creating an Ltspice Simulation |
|
|
777 | (8) |
|
D.3 Lumped-Circuit Approximate Models |
|
|
785 | (3) |
|
D.4 An Exact Spice (Pspice) Model for Lossless, Coupled Lines |
|
|
788 | (17) |
|
D.4.1 Computed Versus Experimental Results for Wires |
|
|
792 | (6) |
|
D.4.2 Computed Versus Experimental Results for PCBs |
|
|
798 | (7) |
|
D.5 Use of Spice (Pspice) in Fourier Analysis |
|
|
805 | (10) |
|
D.6 Spicemtl.For for Computing a Spice (Pspice) Subcircuit Model of a Lossless, Multiconductor Transmission Line |
|
|
815 | (2) |
|
D.7 Spicelpi.For for Computing a Spice (Pspice) Subcircuit of a Lumped-Pi Model of a Lossless, Multiconductor Transmission Line |
|
|
817 | (6) |
|
|
818 | (2) |
|
|
820 | (3) |
|
Appendix E A Brief History of Electromagnetic Compatibility |
|
|
823 | (4) |
|
|
823 | (2) |
|
|
825 | (2) |
Index |
|
827 | |