Slattery / Skinner Platform Interference in Wireless Systems

Models, Measurement, and Mitigation
1. Auflage 2011
ISBN: 978-0-08-055856-1
Verlag: Elsevier Science & Techn.
Format: PDF
Kopierschutz: 1 - PDF Watermark

E-Book, Englisch, 416 Seiten, Web PDF

Intra-system EMC problems are becoming increasingly common in mobile devices, ranging from notebook PCs to cell phones, with RF/wireless capbilities. These issues range from minor annoyances to serious glitches which impede the functioning of the device. This book gives a thourough review of electromagnetic theory (including Maxwell's equations), discusses possible sources and causes of intra-system interference, shows to use models and analysis to discover potential sources of intra-system EMC in a design, how to use appropriate tests and measurements to detect intra-system EMC problems, and finally extensively discusses measures to mitigate or totally eliminate intra-system EMC problems. With more and more mobile devices incorporating wirless capability (often with multiple wireless systems, such as Bluetooth and WiFi), this book should be part of the reference shelf of every RF/wireless engineer and mobile device designer.
*Addresses a growing problem in RF/wireless devices----interference created inside the devices, which impair their operation
*Covers devices, ranging from laptop PCs to mobile phones to Bluetooth headsets
*Explains the sources of such intra-system interference, how to detect and measure such interference, design techniques for mitigating the interference, and proven techniques for eliminating the interference

Autoren/Hrsg.

Slattery, Kevin

Skinner, Harry

Inhaltsverzeichnis

1;Front Cover;1
2;Platform Interference in Wireless Systems;4
3;Copyright Page;5
4;Table of Contents;6
5;Preface;10
6;Chapter 1. Introduction;12
6.1;1.1 Setting The Scene;12
6.2;1.2 Wireless vs. EMI;13
6.3;1.3 Addressing the Fundamentals;15
6.3.1;1.3.1 Platform Interference: Describing the Problem;17
6.4;1.4 Platform RF Snapshots;37
6.5;1.5 Platform RF Sources: Summing It All Up;45
7;Chapter 2. The Structure of Signals;48
7.1;2.1 Time Has Little To Do with Infinity and Jelly Doughnuts;48
7.2;2.2 Platform Signals: Preliminaries in Spectral Analysis;49
7.3;2.3 Harmonic Variation with Time;51
7.4;2.4 Variation with Duty Cycle;54
7.5;2.5 Nonrepetitive Signals;66
7.6;2.6 Modifying a Clock;68
7.7;2.7 Random Data Sequences as Signals;70
7.8;2.8 Spectra of Display Symbols;77
7.9;2.9 Summary;86
7.10;References;87
8;Chapter 3. Analysis of Symbols;88
8.1;3.1 When People Finally Come to Understand Your Vision . . . It’s Time for a New Vision;88
8.2;3.2 Analysis of Display Symbols;103
8.2.1;3.2.1 Justification for the Differential Operator;113
8.3;3.3 Wireless Performance in the Presence of Radiated Emissions from Digital Display Symbols;115
8.4;3.4 Developing the Analysis of Differential Symbols;118
8.5;3.5 The Impact of Pulse Width and Edge Rate Jitter on the Expected EMI/RFI;124
8.6;3.6 Summary;130
8.7;References;130
9;Chapter 4. Measurement Methods;132
9.1;4.1 One Measurement is Worth a Thousand Opinions;132
9.2;4.2 Near-Field Scans of Clock ICs;139
9.3;4.3 Measurements Beyond the Near Field: Transition Region;144
9.4;4.4 The Near-Field, Far-Field Transition;144
9.5;4.5 Far-Field Measurements;152
9.6;4.6 Other Measurement Methods;153
9.7;4.7 Summary;156
9.8;References;156
10;Chapter 5. Electromagnetics;158
10.1;5.1 He Must Go by Another Way Who Would Escape this Wilderness;158
10.2;5.2 The Time-Varying Maxwell’s Equations;165
10.3;5.3 Electric and Magnetic Potentials;167
10.4;5.4 Radiation Mechanisms;169
10.5;References;174
11;Chapter 6. Analytical Models;176
11.1;6.1 Honest Analysis Gets in the Way of Results Desired Emotionally;176
11.2;6.2 The Electric Dipole;176
11.3;6.3 Field Impedance of the Elementary Electric Dipole;183
11.4;6.4 The Extended Dipole Radiator;185
11.5;6.5 The Magnetic Dipole;191
11.6;6.6 Developing Simple Analytical Structures for Real Devices;196
11.7;6.7 Developing Channel Models;207
11.8;6.8 Summary;221
11.9;References;221
12;Chapter 7. Connectors, Cables, and Power Planes;224
12.1;7.1 Chance and Caprice Rule the World;224
12.2;7.2 Power Distribution Radiated Emissions;226
12.3;7.3 Investigating the Radiated Emissions Potentials of Power Distributions in Packages and Silicon;240
12.4;7.4 Further Investigations with Various Power Topologies;248
12.4.1;7.4.1 Substrate Noise;256
12.5;7.5 Summary;262
12.6;References;262
13;Chapter 8. Passive Mitigation Techniques;264
13.1;8.1 Introduction;264
13.2;8.2 Passive Mitigation;265
13.2.1;8.2.1 Shielding;265
13.2.2;8.2.2 Absorbers;287
13.2.3;8.2.3 Layout;292
13.3;References;300
14;Chapter 9. Active Mitigation;302
14.1;9.1 Frequency Planning;302
14.2;9.2 Frequency Content;308
14.2.1;9.2.1 Spread Spectrum Clocking;312
14.3;9.3 Radio Improvements;316
14.3.1;9.3.1 Noise Estimation;317
14.4;9.4 Closing Remarks;319
14.5;References;320
15;Appendix;322
16;Index;340