ESSENTIAL GUIDE TO RF AND WIRELESS 2ND EDITION

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Ouvrage 0-13-035465-1 : ESSENTIAL GUIDE TO RF AND WIRELESS 2ND EDITION
There's a wireless revolution underway! With The Essential Guide to RF and Wireless, Second Edition, you can understand it, join it, and help drive it-even if you don't have a technical background. Leading consultant Carl J. Weisman has thoroughly updated this bestseller to reflect new market realities and breakthrough technologies-from wireless 802.11 LANs to broadband fixed wireless, and beyond. Mr. Weisman covers wireless at every level you need to understand: concepts, terminology, building blocks, and above all, how complete wireless systems actually work. Drawing on his extensive experience training sales professionals, he explains the essence of every key wireless/RF technology-clearly, comprehensibly, and with just the right touch of humor. From its all-new glossary to its extensive collection of charts, diagrams, and photographs, no other wireless/RF book is as accessible or as friendly! Whether you're a sales or marketing pro, customer, investor, tech writer, PR specialist, trade press writer, analyst, planner, or student, here's the up-to-the-minute briefing you've been searching for!
Preface
A lot has transpired in the world of RF and wireless since I wrote the first edition of The Essential Guide to RF and Wireless . It seems as though this wonderful technology, which has actually been around quite a long time, has just begun to take off in the last two years. One thing is certain, there is no doubt that our lives will be forever changed by the wireless revolution we are now experiencing.
This book is written for all those who want to understand how this mysterious technology actually works, but did not have the good fortune (?) to get an engineering degree. Toward this end, the book's overriding goal is to simplify RF electronics and wireless technology with analogies, metaphors, and a minimum of mathematics. Many photographs and figures are included to help explain things further. Unlike other books of its kind, however, it takes a distinctly lighthearted approach to the subject by incorporating witticisms and sarcasm, occasionally directed at the book's hypothetical protagonist, the RF engineer. This book is intentionally made humorous because the subject matter is so dry. My feeling is, no matter how brilliantly written or factually correct an introductory book on RF is, if it is too long and boring, you will never get past the first chapter_which is really funny, by the way.
The Essential Guide to RF and Wireless takes an overly simplistic approach to the subject matter. In this vein, it accomplishes two main objectives: it provides a conceptual understanding of RF components and wireless systems, and it exposes you to the main vocabulary used in the industry. You can hardly expect to understand a topic ascomplex as wireless communications without first learning its lingua franca.
The Essential Guide to RF and Wireless is intended for non-technical people who know absolutely nothing about RF but need to or just want to. For every engineer working in the field of RF, there are many more non-technical people working in the field who can benefit from understanding and speaking RF. They include non-technical managers, sales administrators, distribution specialists, manufacturer's representatives, buyers, marketing and communications personnel, advertising agents, tradeshow booth staffers, executive recruiters, financial analysts, and technical writers. The first edition was especially popular among investment bankers and venture capitalists.
This book can be used three different ways. First, it can be read cover to cover as the book is organized in such a way where each successive chapter builds on the one before it, starting with basic concepts and terminology and ending with the various kinds of wireless systems. Second, each chapter can be read on a stand-alone basis, for those who need to quickly grasp a single subject or concept. Some of the subject matter is repeated in different chapters in an effort to make each chapter understandable by itself. Finally, this book can be used as a reference. The many tables, the Glossary, and Appendices A and B provide quick access to terminology, acronyms, and specifications used in the wireless industry.
Regardless of how you use this book, if you are new to the subject of RF, you should read all of Part 1 (Chapters 1 and 2), as the rest of the book builds on the fundamental concepts and vocabulary introduced there.
Part 2 (Chapters 3, 4, and 5) is primarily intended for those working in the RF and wireless industry, as it covers the underlying technology of an RF system in great detail. All of the important building blocks used to make RF hardware are explained, as are the different methods used to manufacture them. Also covered is the fascinating topic of modulation, which is how ground-based information gets prepared to enter the wireless world.
New items added to Part 2 in the second edition include smart antennas and superconducting filters. Other components new to the second edition are the phase shifter and phase detector (and the role they play in phase modulation). Consequently, a greatly expanded discussion and visual depiction of phase modulation has been added. Also new to the second edition is a discussion of some of the newer semiconductor materials used today.
Finally, Part 3 (Chapters 6, 7, and 8) is where the fun begins. This part of the book gives you an overview of several wireless systems. Chapter 6 discusses some wireless systems that have been around awhile. These are mostly systems with which you are already familiar but probably never knew how they worked. New additions to Chapter 6 include an expanded discussion of GPS as well as an introduction to satellite Internet delivery.
Chapter 7, which is completely rewritten in the second edition, is devoted entirely to mobile telephony. The chapter discusses the different mobile telephone choices worldwide and how they work. There is even a block diagram of a generic digital cellular phone. Because of its importance to the future of mobile telephony, an entire section in Chapter 7 is devoted to the workings of CDMA. The chapter concludes with a discussion about the future of mobile telephony.
Chapter 8, which is new to the second edition, is devoted to all those wireless technologies, systems, and applications that have exploded onto the scene since I published the first edition. These include developments in broadband fixed wireless, wireless networking, and mobile Internet access. The chapter concludes with discussions of leading-edge wireless technologies, wireless security, and health concerns.
I would like to thank everyone who took the time to provide me with feedback on the first edition. While I enjoyed receiving the complimentary feedback more, the critical feedback hopefully contributed to a better second edition.
If you would like to provide me with your feedback on this edition, feel free to contact me at cjweisman@yahoo.com
Enjoy.
Table of Contents
Preface xvii
Part 1 Fundamentals 1 Basic Concepts 3 Introduction 4
Vocabulary 5
Prefixes 6
Basic Electronics Terminology 6 RF Basics 7
Transmitters and Receivers 7 Signals 8
2 RF Behavior 15
Loss and Gain 16
Devices 16
Attenuation 17
Insertion Loss 18
Decibels 19
Definition 19
Decibel Math 19
Bandwidth 22
Definition 22
Wideband and Narrowband 24 RF in the Environment 24 Signal Behavior 24 Match 28
What Is Match? 28
Consequences of an Imperfect Match 30 Part 2 RF Hardware 3 Basic System Components 35 Block Diagrams 36
Receiver 37
Transmitter 37
Antennas 38
Block Diagram 38
Antenna Characteristics 39 How Antennas Work 42 Antenna Performance 43 Polarization 45
Antenna Dimensions 46 Smart Antennas 48
Amplifiers 49
Block Diagram 49
Fundamental Properties of Amplifiers 49 How Amplifiers Work 54 Special Amplifiers 55 Filters 57
Block Diagram 57
The Filter's Function 58 Filter Types 59
Filter Performance 59 Special Filters 61 Mixers 63
Block Diagram 63
The Mixer's Function 64 How Mixers Work 65 Mixer Configurations 67 Sources 68
Block Diagram 68
How Oscillators Work 69 Different Kinds of Oscillators 70 A Special Oscillator--The VCO 71 Synthesizers 72
A Quick Review 73
Transmitter Block Diagram 74 Receiver Block Diagram 74 Review 75
4 Other Components 77 Switches 79
Block Diagram 79
Switch Function and Performance 79 Types of Switches 80 System Use 83
Attenuators 84
Block Diagram 84
The Attenuator's Function 84 Types of Attenuators 85 Dividers and Combiners 88 Block Diagram 88
The Dividers' and Combiners' Functions 88 System Use 89
Couplers 90
Block Diagram 90
How Couplers Work 90 Types of Couplers 91 Circulators and Isolators 93 Block Diagram 93
How Circulators Work 93 System Use 94
Isolators 95
Transformers 96
Block Diagram 96
The Transformer's Function 96 Detectors 98
Block Diagram 98
The Detector's Function 98 Phase Shifters 99
Block Diagram 99
The Phase Shifter's Function 99 Phase Detectors 100 The Phase Detector's Function 100 Review of Components 101 5 Circuits and Signals 103 Semiconductors 104 Materials and Devices 104 Diodes 107
Transistors 107
Integrated Circuits (MMIC) 110 Circuit Technologies 111 Lumped and Distributed Circuits 111 Discrete, Hybrid, and MMIC Circuit Choices 114 Subassemblies 117
Cavities 117
Modulation 119
What Is Modulation? 119 Types of Modulation 120 Modulators and Demodulators 127 Getting Around 128 Cables 128
Connectors 131
Waveguides 134
Circuit Traces 135 Part 3 RF Systems
6 Older Technology 141 Broadcasting 143
What Is Broadcasting? 143 The Role of Frequency 145 Tuning In 148
Television Delivery 149 Radar 153
What Is Radar? 153 How Radar Works 155 Different Radar Systems 159 Satellite Communications 162 Why Satellites? 162 How Satellites Work 164 Satellite Systems 171 A Special Satellite System--GPS 174 The Next Generation Satellites--LEO 179 The Internet from Above 181 Point-to-Point Microwave 187 What Is Point-to-Point Microwave? 187 Point-to-Point Operations 188 7 Mobile Telephony 191 A World of Choices 193 Differentiators 193 Worldwide Systems 194 The Cellular Concept 195 Topology 195
Infrastructure 197 Mobility 198
Adding Capacity 199 Underlying Technology 201 Frequency Reuse 201 Air Interface 203
Cellular Phone Block Diagram 206 CDMA Explained 209 Spread Spectrum 209 Channels 217
Cellular Evolution 218 Different Generations 218 Paths of Migration to 3G 221 8 The New World of Wireless 225 Broadband Fixed Wireless 227 Wireless Local Loop 227 Air Link Transmission Technologies 236 Wireless Networks 240 Local Area Networks 240 Personal Area Networks 247 Home Networks 249
The Mobile Internet 252 Technology 253
M-Commerce 255
The Bleeding Edge 256 Up-and-Coming Technologies 257 Security Issues 263 Health Concerns 266 Glossary 269
Appendix A Acronyms 283 Appendix B Specifications 293 Bibliography 297
About the Author 299 Index 301


Auteur : WEISMAN
Editeur : PRENTICE HALL
Nombre de pages : 311
Date de publication : 04 2002

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