Antennas for Portable Devices

摘要: Foreword. Acknowledgements. List of Contributors. 1 Introduction (Zhi Ning Chen). References. 2 Handset Antennas (Brian S. Collins). 2.1 Introduction. 2.2 Performance Requirements. 2.3 Electrically Small Antennas. 2.4 Classes 2.5 The Quest for Efficiency and Extended Bandwidth. 2.5.1 Geometries. 2.5.2 Antenna Position in the Handset. 2.5.3 Effect User. 2.5.4 Volume. 2.5.5 Impedance Behavior a Typical Low Band. 2.5.6 Fields Currents on Handsets. 2.5.7 Managing Length-Bandwidth Relationship. 2.5.8 RF Other Components 2.5.9 Specific Absorption Rate. 2.5.10 Hearing Aid Compliance. 2.5.11 Economic Considerations. 2.6 Practical Design. 2.6.1 Simulations. 2.6.2 Materials Construction. 2.6.3 Recycling. 2.6.4 Building Prototype. 2.6.5 Measurement. 2.6.6 Design Optimization. 2.7 Starting Points 2.7.1 External 2.7.2 Balanced 2.7.3 Services. 2.7.4 Dual-Antenna Interference Cancellation. 2.7.5 Multiple Input, Output. 2.7.6 Lower-Frequency Bands - TV Radio 2.8 2.9 Conclusion. 3 RFID Tag (Xianming Qing Zhi 3.1 3.2 Fundamentals. 3.2.1 System Configuration. 3.2.2 Classification Systems. 3.2.3 Principles Operation. 3.2.4 Frequencies, Regulations Standardization. 3.3 Considerations 3.3.1 Near-field 3.3.2 Far-field 3.4 Environment 3.4.1 Tags. 3.4.2 3.4.3 Case Study. 3.5 Summary. 4 Laptop Evaluation (Duixian Liu Brian Gaucher). 4.1 4.2 Laptop-Related Issues. 4.2.1 Display 4.2.2 Possible Applications. 4.2.3 Mechanical Industrial Restrictions. 4.2.4 LCD Surface Treatment 4.2.5 Orientation Display. 4.2.6 Difference between Cellphone 4.2.7 Location Evaluations. 4.3 Methodology. 4.3.1 Modeling. 4.3.2 Cut-and-Try. 4.3.3 Measurements. 4.4 PC Card Evaluation. 4.5 Link Budget Model. 4.6 An INF Implementation. 4.7 Integrated Solutions Comparison. 4.8 Dualband Examples. 4.8.1 Inverted-F with Coupled Elements. 4.8.2 A PCB Floating 4.8.3 Loop Related Antenna. 4.9 Remarks WLAN 4.10 Wireless Wide Area Network 4.10.1 Height Effects 4.10.2 WWAN Example. 4.11 Ultra-Wide Band 4.11.1 Description UWB 4.11.2 Measurement Results. 5 Issues Microwave Thermal Therapies (Koichi Ito Kazuyuki Saito). 5.1 Therapies. 5.1.1 5.1.2 by Therapeutic Temperature. 5.1.3 Heating Schemes. 5.2 Interstitial Hyperthermia. 5.2.1 5.2.2 Coaxial-Slot 5.2.3 Numerical Calculation. 5.2.4 5.2.5 Temperature Distributions Around 5.3 Clinical Trials. 5.3.1 Equipment. 5.3.2 Use Single 5.3.3 an Array Applicator. 5.3.4 Results Treatment. 5.4 5.4.1 Brain Tumors. 5.4.2 Intracavitary Hyperthermia Bile Duct Carcinoma. 5.5 6 Wearable Devices (Akram Alomainy, Yang Hao Frank Pasveer). 6.1 6.1.1 Body Networks. 6.1.2 Requirements BAN/PAN. 6.2 Modelling Characterization 6.2.1 BANs/PANs. 6.2.2 6.3 WBAN Channel 6.3.1 Propagation WBANs. 6.3.2 Characteristics. 6.4 Study: Compact Healthcare Sensors. 6.4.1 Application 6.4.2 Theoretical 6.4.3 Sensor Characterization. 6.4.4 6.5 7 Applications Chen Terence S.P. See). 7.1 7.2 Challenges 7.3 State-of-the-Art Solutions. 7.3.1 Frequency-Independent Designs. 7.3.2 Planar Broadband 7.3.3 Crossed Rolled 7.3.4 Printed 7.3.5 Antipodal Vivaldi 7.4 7.4.1 Reduced Ground-Plane Effect. 7.4.2 USB. 7.5 Index.