Fundamentals of Applied Electromagnetics. Fawwaz T. Ulaby Umberto Ravaioli

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1 Global edition Fundamentals of Applied Electromagnetics SEVENTH edition Fawwaz T. Ulaby Umberto Ravaioli

2 Library of Congress Cataloging-in-Publication Data on File Vice President and Editorial Director, ECS: Marcia J. Horton Head of Learning Asset Acquisition, Global Edition: Laura Dent Acquisitions Editor: Julie Bai Editorial Assistant: Sandra Rodriguez Acquisitions Editor, Global Edition: Murchana Borthakur Associate Project Editor, Golbal Edition: Binita Roy Managing Editor: Scott Disanno Production Editor: Rose Kernan Art Director: Marta Samsel Art Editor: Gregory Dulles Manufacturing Manager: Mary Fischer Manufacturing Buyer: Maura Zaldivar-Garcia Senior Manufacturing Controller, Production, Global Edition: Trudy Kimber Product Marketing Manager: Bram Van Kempen Field Marketing Manager: Demetrius Hall Marketing Assistant: Jon Bryant Cover Designer: Lumina Datamatics Pearson Education Limited Edinburgh Gate Harlow Essex CM20 2JE England and Associated Companies throughout the world Visit us on the World Wide Web at: c Pearson Education Limited 2015 The rights of Fawwaz T. Ulaby and Umberto Ravaioli to be identified as the authors of this work have been asserted by them in accordance with the Copyright, Designs and Patents Act Authorized adaptation from the United States edition, entitled Fundamentals of Applied Electromagnetics, 7th edition, ISBN , by Fawwaz T. Ulaby and Umberto Ravaioli, published by Pearson Education c All rights reserved. No part of this publication may be reproduced, stored in a retrieval system, or transmitted in any form or by any means, electronic, mechanical, photocopying, recording or otherwise, without either the prior written permission of the publisher or a license permitting restricted copying in the United Kingdom issued by the Copyright Licensing Agency Ltd, Saffron House, 6 10 Kirby Street, London EC1N 8TS. All trademarks used herein are the property of their respective owners. The use of any trademark in this text does not vest in the author or publisher any trademark ownership rights in such trademarks, nor does the use of such trademarks imply any affiliation with or endorsement of this book by such owners. ISBN 10: ISBN 13: British Library Cataloguing-in-Publication Data A catalogue record for this book is available from the British Library Typeset in Times by Paul Mailhot Printed and bound by Courier Kendallville in The United States of America

3 Fundamentals of Applied Electromagnetics, Global Edition Table of Contents Cover Title Copyright Preface to Seventh Edition List of Technology Briefs Contents List of Modules Photo Credits Chapter 1: Introduction: Waves and Phasors 1-1 Historical Timeline EM in the Classical Era EM in the Modern Era 1-2 Dimensions, Units, and Notation 1-3 The Nature of Electromagnetism The Gravitational Force: A Useful Analogue Electric Fields Magnetic Fields Static and Dynamic Fields 1-4 Traveling Waves Sinusoidal Waves in a Lossless Medium TB1 LED Lighting Sinusoidal Waves in a Lossy Medium 1-5 The Electromagnetic Spectrum 1-6 Review of Complex Numbers 1-7 Review of Phasors Solution Procedure TB2 Solar Cells Traveling Waves in the Phasor Domain Chapter 1 Summary Chapter 2: Transmission Lines 2-1 General Considerations The Role of Wavelength Propagation Modes 2-2 Lumped-Element Model

4 2-3 Transmission-Line Equations 2-4 Wave Propagation on a Transmission Line 2-5 The Lossless Microstrip Line 2-6 The Lossless Transmission Line: General Considerations Voltage Reflection Coefficient Standing Waves 2-7 Wave Impedance of the Lossless Line 2-8 Special Cases of the Lossless Line Short-Circuited Line Open-Circuited Line Application of Short-Circuit/Open-Circuit Technique TB3 Microwave Ovens Lines of Length l = n/ Quarter-Wavelength Transformer Matched Transmission Line: ZL = Z0 2-9 Power Flow on a Lossless Transmission Line Instantaneous Power Time-Average Power 2-10 The Smith Chart Parametric Equations Wave Impedance SWR, Voltage Maxima and Minima Impedance to Admittance Transformations 2-11 Impedance Matching Lumped-Element Matching Single-Stub Matching 2-12 Transients on Transmission Lines TB4 EM Cancer Zappers Transient Response Bounce Diagrams Chapter 2 Summary Chapter 3: Vector Analysis 3-1 Basic Laws of Vector Algebra Equality of Two Vectors Vector Addition and Subtraction Position and Distance Vectors Vector Multiplication Scalar and Vector Triple Products 3-2 Orthogonal Coordinate Systems

5 3-2.1 Cartesian Coordinates Cylindrical Coordinates Spherical Coordinates 3-3 Transformations between Coordinate Systems Cartesian to Cylindrical Transformations TB5 Global Positioning System Cartesian to Spherical Transformations Cylindrical to Spherical Transformations Distance between Two Points 3-4 Gradient of a Scalar Field Gradient Operator in Cylindrical and Spherical Coordinates Properties of the Gradient Operator 3-5 Divergence of a Vector Field 3-6 Curl of a Vector Field TB6 X-Ray Computed Tomography Vector Identities Involving the Curl Stokess Theorem 3-7 Laplacian Operator Chapter 3 Summary Chapter 4: Electrostatics 4-1 Maxwells Equations 4-2 Charge and Current Distributions Charge Densities Current Density 4-3 Coulombs Law Electric Field due to Multiple Point Charges Electric Field due to a Charge Distribution 4-4 Gausss Law 4-5 Electric Scalar Potential Electric Potential as a Function of Electric Field Electric Potential Due to Point Charges Electric Potential Due to Continuous Distributions Electric Field as a Function of Electric Potential Poissons Equation 4-6 Conductors TB7 Resistive Sensors Drift Velocity Resistance Joules Law

6 4-7 Dielectrics Polarization Field Dielectric Breakdown 4-8 Electric Boundary Conditions Dielectric-Conductor Boundary Conductor-Conductor Boundary 4-9 Capacitance 4-10 Electrostatic Potential Energy TB8 Supercapacitors as Batteries TB9 Capacitive Sensors 4-11 Image Method Chapter 4 Summary Chapter 5: Magnetostatics 5-1 Magnetic Forces and Torques Magnetic Force on a Current-Carrying Conductor Magnetic Torque on a Current-Carrying Loop 5-2 The BiotSavart Law Magnetic Field due to Surface and Volume Current Distributions Magnetic Field of a Magnetic Dipole Magnetic Force Between Two Parallel Conductors 5-3 Maxwells Magnetostatic Equations Gausss Law for Magnetism Ampères Law TB10 Electromagnets 5-4 Vector Magnetic Potential 5-5 Magnetic Properties of Materials Electron Orbital and Spin Magnetic Moments Magnetic Permeability Magnetic Hysteresis of Ferromagnetic Materials 5-6 Magnetic Boundary Conditions 5-7 Inductance Magnetic Field in a Solenoid Self-Inductance TB11 Inductive Sensors Mutual Inductance 5-8 Magnetic Energy Chapter 5 Summary Chapter 6 Maxwells Equations for Time-Varying Fields

7 6-1 Faradays Law 6-2 Stationary Loop in a Time-Varying Magnetic Field 6-3 The Ideal Transformer 6-4 Moving Conductor in a Static Magnetic Field TB12 EMF Sensors 6-5 The Electromagnetic Generator 6-6 Moving Conductor in a Time-Varying Magnetic Field 6-7 Displacement Current 6-8 Boundary Conditions for Electromagnetics 6-9 Charge-Current Continuity Relation 6-10 Free-Charge Dissipation in a Conductor 6-11 Electromagnetic Potentials Retarded Potentials Time-Harmonic Potentials Chapter 6 Summary Chapter 7: Plane-Wave Propagation 7-1 Time-Harmonic Fields Complex Permittivity Wave Equations 7-2 Plane-Wave Propagation in Lossless Media Uniform Plane Waves General Relation Between E and H TB13 RFID Systems 7-3 Wave Polarization Linear Polarization Circular Polarization Elliptical Polarization 7-4 Plane-Wave Propagation in Lossy Media Low-Loss Dielectric Good Conductor TB14 Liquid Crystal Display (LCD) 7-5 Current Flow in a Good Conductor 7-6 Electromagnetic Power Density Plane Wave in a Lossless Medium Plane Wave in a Lossy Medium Decibel Scale for Power Ratios Chapter 7 Summary

8 Chapter 8: Wave Reflection and Transmission 8-1 Wave Reflection and Transmission at Normal Incidence Boundary between Lossless Media Transmission-Line Analogue Power Flow in Lossless Media Boundary between Lossy Media 8-2 Snells Laws 8-3 Fiber Optics 8-4 Wave Reflection and Transmission at Oblique Incidence TB15 Lasers Perpendicular Polarization Parallel Polarization Brewster Angle 8-5 Reflectivity and Transmissivity 8-6 Waveguides TB16 Bar-Code Readers 8-7 General Relations for E and H 8-8 TM Modes in Rectangular Waveguide 8-9 TE Modes in Rectangular Waveguide 8-10 Propagation Velocities 8-11 Cavity Resonators Resonant Frequency Quality Factor Chapter 8 Summary Chapter 9: Radiation and Antennas 9-1 The Hertzian Dipole Far-Field Approximation Power Density 9-2 Antenna Radiation Characteristics Antenna Pattern Beam Dimensions Antenna Directivity Antenna Gain Radiation Resistance 9-3 Half-Wave Dipole Antenna Directivity of /2 Dipole Radiation Resistance of /2 Dipole Quarter-Wave Monopole Antenna

9 9-4 Dipole of Arbitrary Length 9-5 Effective Area of a Receiving Antenna TB17 Health Risks of EM Fields 9-6 Friis Transmission Formula 9-7 Radiation by Large-Aperture Antennas 9-8 Rectangular Aperture with Uniform Aperture Distribution Beamwidth Directivity and Effective Area 9-9 Antenna Arrays 9-10 N-Element Array with Uniform Phase Distribution 9-11 Electronic Scanning of Arrays Uniform-Amplitude Excitation Array Feeding Chapter 9 Summary Chapter 10: Satellite Communication Systems and Radar Sensors 10-1 Satellite Communication Systems 10-2 Satellite Transponders 10-3 Communication-Link Power Budget 10-4 Antenna Beams 10-5 Radar Sensors Basic Operation of a Radar System Unambiguous Range Range and Angular Resolutions 10-6 Target Detection 10-7 Doppler Radar 10-8 Monopulse Radar Chapter 10 Summary Appendix A: Symbols, Quantities, Units, and Abbreviations Appendix B: Material Constants of Some Common Materials Appendix C: Mathematical Formulas Appendix D: Answers to Selected Bibliography Index A B C

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