Antenna design for mobile devices /
Zhijun Zhang.
- 1 PDF (xviii, 280 pages) : illustrations.
- Wiley - IEEE .
- Wiley - IEEE .
Includes bibliographical references and index.
About the Author x -- Preface xi -- Acknowledgments xii -- Abbreviations xiii -- 1 Introduction 1 -- 1.1 The Evolution of Mobile Antennas 2 -- 1.2 How to Quantitatively Evaluate an Antenna 10 -- 1.3 The Limits of Antenna Designs 12 -- 1.4 The Trade?]Offs in Antenna Designs 14 -- 1.5 Mobile Communication and Band Allocations 16 -- 1.6 Quickly Building a Simple Antenna - a Practical Example 18 -- References 27 -- 2 Antenna Matching 28 -- 2.1 The Smith Chart 29 -- 2.2 Single?]Band Matching 33 -- 2.2.1 Matching with Lumped Elements 33 -- 2.2.2 Different Ways to Accomplish a Single?]Band Matching 36 -- 2.2.3 Matching with Both Transmission Line and Lumped Elements 39 -- 2.2.4 Bandwidth Consideration 42 -- 2.3 Dual?]Band Matching 50 -- 2.4 Reconfigurable Matching 55 -- 2.4.1 Reconfigurable Matching - Varactor?]Based 55 -- 2.4.2 Reconfigurable Matching - Switch?]Based 60 -- References 63 -- 3 External Antenna 65 -- 3.1 Stubby Antennas 66 -- 3.1.1 Single?]Band Helix Stubby Antenna 67 -- 3.1.2 Multiband Helix Stubby Antenna 86 -- 3.1.3 Ultra?]Wideband Stubby Antenna 109 -- 3.2 Whip / Stubby (Retractable) Antenna 117 -- 3.2.1 Decoupled Whip / Stubby Antenna 119 -- 3.2.2 Semi?]Decoupled Whip / Stubby Antenna 121 -- 3.3 Meander Line Stubby Antenna 126 -- 3.4 Effect of Ground Plane 131 -- References 136 -- 4 Internal Antenna 138 -- 4.1 Inverted?]F Antenna 141 -- 4.2 Planar IFA 146 -- 4.2.1 Single?]Band PIFA 146 -- 4.2.2 Multiband PIFA Antenna with Slits 149 -- 4.2.3 Multiband PIFA with Separate Branches 157 -- 4.2.4 Multiband PIFA with Parasitic Element 158 -- 4.2.5 Manufacturing PIFA Antenna 159 -- 4.3 Folded Monopole Antenna 163 -- 4.4 Loop Antenna 167 -- 4.5 Ceramic Antenna 172 -- 4.5.1 Monopole?]Type Ceramic Antenna 173 -- 4.5.2 IFA?]Type Ceramic Antenna 176 -- 4.5.3 Loop?]Type Ceramic Antenna 177 -- 4.6 Slot Antenna 179 -- 4.7 Design a Hepta?]Band Antenna with Multiple Radiators and Multiple Modes 185 -- 4.8 Design a Reconfigurable Hepta?]Band Antenna 191 -- 4.9 MIMO Antennas 200 -- 4.9.1 Explaining Capacity Boost Effect Through the Antenna Point of View 200. 4.9.2 Antenna Correlation and Antenna Isolation 207 -- 4.9.3 Improve Isolation Between Antennas 209 -- 4.10 Antennas in Recently Released Phones 211 -- 4.10.1 Entry?]Level Phone 211 -- 4.10.2 Flagship Phone 221 -- References 226 -- 5 Antenna Measurement 229 -- 5.1 Passive Antenna Measurement 229 -- 5.1.1 Measurement on a Vector Network Analyzer 229 -- 5.1.2 Fixture 234 -- 5.1.3 Passive Chamber Measurement 246 -- 5.2 Active Antenna (Over the Air) Measurement 253 -- 5.2.1 EIRP, ERP, and TRP 253 -- 5.2.2 EIS and TIS 256 -- 5.2.3 Sensitivity Degradation Due to Interference 259 -- 5.3 Antenna Measurements in the Production Line 262 -- 5.4 Multiple Input and Multiple Output Antenna Test 271 -- References 275 -- 6 Regulations Related to Antenna Engineers 276 -- 6.1 Specific Absorption Rate 276 -- 6.1.1 Definition and Measurement Method of SAR 277 -- 6.1.2 SAR Limits in the United States and Europe 283 -- 6.1.3 Controlling SAR 285 -- 6.1.4 Updates on SAR Requirement 294 -- 6.2 Hearing Aid Compatibility 296 -- 6.2.1 HAC Measurement 296 -- 6.2.2 HAC Specification in the United States 299 -- 6.2.3 Updates on HAC Requirement 303 -- 6.3 Electromagnetic Compatibility 304 -- References 305 -- Appendix: User Manual for ZJ_Antenna_Matching Software 307 -- Index 314.
Restricted to subscribers or individual electronic text purchasers.
Mode of access: World Wide Web
9781119132332
10.1002/9781119132332 doi
Radio--Antennas--Design and construction. Mobile communication systems--Equipment and supplies--Design and construction. Miniature electronic equipment--Design and construction.