Antennas for Small Mobile Terminals
Erschienen am 1. Januar 2018
340 Seiten
978-1-63081-521-9 (ISBN)
Beschreibung
With the progress and rapid increase in mobile terminals, the design of antennas for these small systems is becoming more and more important. This forward-looking volume offers professionals current and comprehensive coverage of the design, development, and implementation of small, compact, and lightweight antennas in mobile communication terminals. The book discusses a wide range of communication systems, from Radio-frequency identification (RFID), and near field communications (NFC), to wireless power transmission (WPT) and broadband wireless networks.Engineers learn how to use small antennas in mobile phones, wearable systems, laptop computers, radio watches, and broadband wireless networks such as WLAN and WiMAX. This definite reference covers the critical applications today's professionals need to understand, from antennas for IoT and antenna design for 5G mm-wave devices, to body-centric communication systems and antennas for unmanned aerial vehicles.
Weitere Details
Weitere Ausgaben
Andere Ausgaben
Kyohei Fujimoto | Koichi Itoh
Antennas for Small Mobile Terminals
Buch
09/2018
2. Auflage
Artech House Publishers
200,00 €
Versand in 10-20 Tagen
Kyohei Fujimoto | J. R. James
Mobile Antenna Systems Handbook, Third Edition
Buch
05/2008
Artech House Publishers
197,04 €
Versand in 10-20 Tagen
Inhalt
- Intro
- Antennas for Small Mobile Terminals
- Contents
- 1 Small Antennas for Small Mobile Terminals
- 1.1 Introduction
- 2 Small Antenna Techniques
- 2.1 Introduction
- 2.2 The Definition of Electrically Small
- 2.3 Fundamental Antenna Performance Properties
- 2.4 The Chu Limit
- 2.5 Properties of the Electrically Small Dipole and Loop Antennas
- 2.6 Techniques to Design Small Antennas
- References
- 3 Types of Small Antennas and Small Mobile Terminals
- 3.1 Types of Small Antennas
- 3.2 Types of Small Mobile Terminals
- 4 Antennas for Internet of Things Applications
- 4.1 Introduction
- 4.1.1 Overview of the IoT
- 4.1.2 Connectivity Technologies and Challenges for the IoT
- 4.1.3 Overview of the CMA
- 4.1.4 Chapter Contribution and Structure
- 4.2 Designs of Antennas for the IoT Applications over TVWS with CMA
- 4.2.1 Narrowband Antennas
- 4.2.2 UWB Antennas
- 4.3 RFID-Based Humidity Sensor
- 4.4 Conclusions
- References
- 5 Wireless Power Transfer Systems
- 5.1 Introduction
- 5.2 Overview of WPT Via Radio Wave
- 5.3 Beam Efficiency of WPT Via Radio Waves
- 5.4 Requirements of Antenna for WPT Via Radio Waves
- 5.5 Characteristics of Antenna Array at the Receiver for WPT Via Radio Waves
- 5.6 Various Applications of WPT
- 5.7 Conclusions
- References
- 6 Antennas for Mobile Phones, Including Smartphones
- 6.1 Introduction
- 6.2 Baseline Characteristics
- 6.2.1 Antenna Size and Performance
- 6.2.2 Effect from Chassis
- 6.2.3 Body Effect
- 6.3 Antenna for Smartphone
- 6.3.1 Antenna Type for Smartphone
- 6.3.2 Tunable Antenna
- 7 Antennas for Wearable Systems, Including Body-Centric Communication Systems
- 7.1 Wearable Antenna and Related Issues
- 7.1.1 Antenna Design for Wearable Devices
- 7.1.2 Multiple Antennas in a Wearable Device
- 7.1.3 Metal Exterior Antennas in a Wearable Device
- 7.1.4 Transparent Conducting Patch Antenna for a Wearable Device
- 7.1.5 Liquid Crystal Antenna for Wearable Antenna
- 7.2 SAR of a Wearable Device
- 7.3 Wearable Devices Through the Body Area Network
- 7.3.1 Body Area Network Via a 2.4-GHz System
- 7.3.2 Body Area Network Via a Megahertz Frequency Range
- 7.4 Summary
- References
- 8 Antennas for Laptop Computers, Including Information Tags
- 8.1 Antennas for Laptop Computers
- 8.2 Tunable Multiband Antenna for Tablet Computers
- 8.3 Low SAR Antenna for Tablet Computers
- 8.4 Frequency Reconfigurable Antenna for Mobile Terminals
- 8.4.1 Design Examples
- 8.5 Design of the UHF-RFID Tag
- 8.5.1 UHF-RFID Tag and Its Read Range
- 8.5.2 Example of RFID Tag Antenna Design for Optical Discs
- References
- 9 Antennas for 5G Millimeter-Wave System Including Some Practical Issues for Mobile Terminals
- 9.1 Introductions of the Millimeter-Wave Broadband System and Antennas in the Fifth Generation of the Communication System
- 9.2 Millimeter-Wave Antenna Array and Beamforming Technologies
- 9.2.1 Millimeter-Wave Antennas without Beam Steering
- 9.2.2 Millimeter-Wave Antennas with Beam Steering
- 9.2.3 Millimeter-Wave Antenna Integration and Package
- 9.3 Antenna Array Spatial Coverage and Body-Shadowing Effect in a 5G Millimeter-Wave Mobile System
- 9.3.1 Coverage of Millimeter-Wave Cellular Systems
- 9.3.2 Antenna Arrays in 5G UE and the Assessment Methodologies
- 9.3.3 User Body Effect on 5G UE Antennas
- 9.3.4 Shadowing Loss in the Outdoor Environment
- 9.3.5 Modeling of Human Body Blockage
- 9.3.6 Array System and Network Planning
- 9.4 RF EMF Exposure Standards/Guidelines for 5G Millimeter-Wave User Equipment
- 9.4.1 Power Density Characteristic for Array Antennas
- 9.4.2 Power Constraint Due to Power Density Limits
- 9.4.3 Conservative Power Density Assessment
- 9.4.4 Power Density Assessment Based on Near-Field Reconstruction Algorithms
- References
- Selected Bibliography
- 10 Unmanned Aerial Vehicles
- 10.1 Communications
- 10.2 SAR
- 10.3 Antenna for Collision Avoidance and Direction Finding
- 10.4 Conformal Antenna and Others
- References
- 11 Antennas for Wireless Medical Devices
- 11.1 Introduction
- 11.2 Antennas for In-Body Medical Devices
- 11.2.1 Stationary Antennas in the Body
- 11.2.2 Nonstationary Antennas in the Body
- 11.3 Antennas for On-Body or Wearable Devices
- 11.3.1 Narrowband Antennas with Full Ground Plane
- 11.3.2 UWB Antennas with Full Ground Plane
- 11.3.3 Embroidered Antennas for Easy Integration in Clothing
- References
- 12 Electromagnetic Simulation
- 12.1 Electromagnetic Field Simulation Methods
- 12.1.1 Importance of Electromagnetic Simulation
- 12.1.2 Classification of Electromagnetic Simulation Methods
- 12.1.3 Major Electromagnetic Field Simulation Methods
- 12.1.4 The Matrix Computation Method
- 12.1.5 Examples of Electromagnetic Field Simulation
- 12.2 Design Optimization
- 12.2.1 Definition of Design Optimization
- 12.2.2 Classification of Structural Optimization
- 12.2.3 Major Optimization Methods
- 12.2.4 Topology Optimization Method as a New Optimization Approach
- 12.2.5 Example of Antenna Optimization
- References
- 13 Evaluation of Small Antenna Performance
- 13.1 Fundamentals of Evaluation
- 13.2 Performance Evaluation
- 13.2.1 Input impedance and Bandwidth
- 13.2.2 Radiation Patterns and Gain
- 13.2.3 Efficiency
- 13.3 Measurement
- 13.3.1 Method of Measurement by Using a Coaxial Cable
- 13.3.2 Method of Measurement by Using Small Oscillator
- 13.3.3 Method of Measurement by Using Fiber-Optics
- References
- 14 Evaluation of Small Mobile Terminal Antennas
- 14.1 Measurement Value, Used Conditions, and Phantoms for Small Mobile Terminal Antennas
- 14.1.1 Measurement Value: Radiation Efficiency in Free Space, Radiation Efficiency with the Human Body, and Mean Effective Gain
- 14.1.2 Use Conditions
- 14.2 Measurement Environment of Antenna Performance
- 14.2.1 Impedance measurements
- 14.2.2 Radiation Performance Measurements
- 14.3 Cable Connection Techniques for Evaluating a Small Antenna Embedded in the Product Mobile Terminal
- 14.4 Evaluations of 4 × 4 MIMO Antennas in a Cellular Phone Terminal
- 14.5 Evaluations of GPS Antennas
- 14.6 Evaluations of Bluetooth and Wi-Fi Antennas
- 14.7 Evaluations of Digital TV Antennas
- References
- About the Editors
