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Home > Science, Technology & Agriculture > Electronics and communications engineering > Communications engineering / telecommunications > Compact Antennas for Wireless Communications and Terminals: Theory and Design
Compact Antennas for Wireless Communications and Terminals: Theory and Design

Compact Antennas for Wireless Communications and Terminals: Theory and Design


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About the Book

Compact Antennas for Wireless Communications and Terminals deals with compact microwave antennas and, more specifically, with the planar version of these antennas. Planar antennas are the most appropriate type of antenna in modern communication systems and more generally in all applications requiring miniaturization, integration and conformation such as in mobile phone handsets. The book is suitable for students, engineers and scientists eager to understand the principles of planar and small antennas, their design and fabrication issues, and modern aspects such as UWB antennas, reconfigurable antennas and diversity issues.

Table of Contents:
Introduction xi Chapter 1. General Information About Printed Antennas 1 Jean-Marc LAHEURTE 1.1. Physical characteristics 1 1.2. Properties, limitations, and applications 4 1.3. Printed rectangular antenna viewed as a wide microstrip line 7 1.4. Manufacturing processes 8 1.5. Microwave substrates 11 Chapter 2. Transmission Line Model 15 Jean-Marc LAHEURTE 2.1. Introduction15 2.2. Equivalent circuit 16 2.3. Input impedance 20 Chapter 3. Cavity Model 25 Jean-Marc LAHEURTE 3.1. Introduction 25 3.2. Formulation of the electromagnetic problem 25 3.3. Calculation of expressions for fields and currents of a rectangular patch 29 3.4. Expressions for principal modes 31 3.5. Cartography of modal currents and associated radiation patterns  33 Chapter 4. Radiation of a Printed Antenna 39 Jean-Marc LAHEURTE 4.1. Introduction 39 4.2. Modelization using two equivalent radiating slots 40 4.3. Calculation of the field radiated by a horizontal radiating slot 43 4.4. Calculation of the field radiated by the rectangular patch 44 4.5. Determination of the radiation pattern in the principal planes 44 4.6. Influence of height 46 4.7. Influence of the ground plane 47 4.8. Polarization 48 4.9. Directivity 49 4.10. Influence of the substrate on resonant frequency: parametric study based on antenna RCS 51 Chapter 5. Electrical Equivalent Circuit of a Printed Antenna 55 Jean-Marc LAHEURTE 5.1. Energy considerations 55 5.2. Equivalent circuit 57 5.3. Determination of WE, WM, and B for a rectangular patch 58 5.4. Modeling using a tank circuit 60 5.5. Quality factor of an antenna 62 5.6. Calculation of radiation quality factor 63 5.7. Calculation of efficiency 64 5.8. Influence of surface waves on bandwidth and efficiency 67 Chapter 6. Feeding Circuits for Microstrip Antennas 69 Jean-Marc LAHEURTE and Benoît POUSSOT 6.1. Introduction 69 6.2. Direct coupling by coaxial probe 71 6.3. Excitation by proximity coupling 73 6.4. Excitation by slot coupling 74 Chapter 7. Circularly Polarized Antennas 89 Jean-Marc LAHEURTE, Marjorie GRZESKOWIAK and Stéphane PROTAT 7.1. Principles of circular polarization 90 7.2. Parasitic radiation – degradation of circular polarization 94 7.3. Patch fed by single or dual excitation 96 7.4. Sequential array 99 7.5. Spiral and quadrifilar helix antennas 108 7.6. Conclusion 119 Chapter 8. Wideband Antennas 121 Xavier BEGAUD 8.1. Multiresonant antennas 122 8.2. Traveling wave antennas 125 8.3. Frequency independent antennas 126 8.4. Ultra-wideband antennas 132 8.5. Conclusion 140 Chapter 9. Miniature Antennas 143 Guillaume VILLEMAUD 9.1. Introduction 143 9.2. Which types of antennas should be used for integration? 144 9.3. Integration limits in a finite volume 145 9.4. Resonant antennas in fundamental mode 146 9.5. Bulk reduction techniques 152 9.6. Multiresonant antennas 164 9.7. Synthesis and discussion 166 Chapter 10. Reconfigurable Antennas 169 Jean-Marc LAHEURTE 10.1. Introduction 169 10.2. Basic topologies and constraints 170 10.3. Switched components: available technologies 174 10.4. Frequency reconfigurable antennas (FRAs) 180 10.5. Introduction to RAs in terms of polarization and radiation pattern 185 10.6. Polarized reconfigurable antennas (PRAs) 187 10.7. Radiation pattern reconfigurable antennas (RPRAs) 190 Chapter 11. Introduction to Antenna Diversity 205 Lionel RUDANT 11.1. Benefits of antenna diversity 205 11.2. Performance of multiantenna systems 214 11.3. Multiantenna systems 222 11.4. Conclusion and looking toward MIMO 228 Bibliography 233 List of Authors 241 Index 243

About the Author :
Jean-Marc Laheurte is Professor at the University of Paris-Est Marne-La-Vallée where he is in charge of the antenna group of the ESYCOM laboratory and heads the Gaspard Monge Institute. His current research interests include the design and evaluation of diversity antennas for indoor communications, RFID systems, BAN antennas and BAN channel modeling. He is also active in the electromagnetic modeling of urban scatterers in mobile communications. He also teaches in various European institutions within the framework of the European School of Antennas.


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Product Details
  • ISBN-13: 9781848213074
  • Publisher: ISTE Ltd and John Wiley & Sons Inc
  • Publisher Imprint: ISTE Ltd and John Wiley & Sons Inc
  • Height: 241 mm
  • No of Pages: 272
  • Returnable: N
  • Sub Title: Theory and Design
  • Width: 163 mm
  • ISBN-10: 1848213077
  • Publisher Date: 12 Jul 2011
  • Binding: Hardback
  • Language: English
  • Returnable: N
  • Spine Width: 28 mm
  • Weight: 626 gr


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Compact Antennas for Wireless Communications and Terminals: Theory and Design
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