半智慧型基站天線的設計、實現與套用

圖書信息

書名：半智慧型基站天線的設計、實現與套用

編著者：陳智嬌

ISBN：978-7-5635-4908-5

出版時間：2016-10-18

版次：1-1

定價：￥25.00

內容簡介

本專著闡述了半智慧型基站天線與系統的原理、設計和實現。半智慧型基站天線系統通過簡化波束賦形算法提高系統的用戶容量，同時採用前沿的可重構天線、超導材料和磁性材料來實現移動通信網路要求的高效性，從而實現低成本的室外、室內移動通信基站。

全書共分7章，主要內容包括：半智慧型基站天線的基本原理，波束賦形算法，室外基站天線與電磁帶隙結構的設計，室內介質諧振天線，可重構介質諧振天線，鐵氧體天線的設計、實現和測量等。本書詳細介紹了設計基站天線需要考慮的各項標準和實施步驟，適用於從事天線技術研究的學生和技術人員閱讀。

目錄

Contents

AbstractⅠ

AcknowledgementsⅠ

Chapter 1 Introduction1

1.1 Smart Antennas3

1.2 Semismart Antennas5

1.3 Motivation and Objectives7

1.4 Organisation of Chapters11

1.5 References12

Chapter 2 Shaped Beam Synthesis for Semismart Antenna Scheme13

2.1 Introduction13

2.2 Shaped Beam Synthesis for a Linear Array14

2.3 Shaped Beam Synthesis for a Circular/ Conformal Array16

2.3.1 Define the circular array factor16

2.3.2 Calculating the weighted mean square error (MSE)20

2.3.3 Optimisation algorithms21

2.3.4 Coding examples23

2.4 12element Circular Array for Outdoor Base Station24

2.5 4element Array for a Picocell Sector Antenna29

2.5.1 4element synthesis for sector pattern with small back lobe30

2.5.2 Comparison between linear array and conformal array30

2.6 Conclusion32

2.7 References33

Chapter 3 Use of Metamaterials in Narrowband and Wideband Cellular BS Antennas35

3.1 Introduction35

3.2 EBG structures on Narrow Band Crossdipole Antennas37

3.3 EBG Structures on Broadband Printed Crossdipole Element50

3.3.1 Modifying Port 1 to provide flatten return loss53

3.3.2 Deploy PRS to enhance and steady the directivity54

3.3.3 Use of EBG structure to reduce the mutual coupling in antenna array57

3.4 Summary63

3.5 References64

Chapter 4 Dielectric Resonator Antennas for Indoor IEEE 802.11ac66

4.1 Introduction66

4.2 Dielectric Resonator Antenna69

4.3 Wideband Dualpolarised DRA (WBDPDRA)69

4.3.1 Results and discussions70

4.3.2 Modes in DRA73

4.4 Dualband Dualpolarised DRA (DBDPDRA)77

4.5 Dualband Circularpolarised DRA (DBCPDRA)82

4.6 Pattern Reconfigurable Dualpolarised DRA (PRDPDRA)86

4.7 Summary and Future Work90

4.8 References90

Chapter 5 Pattern Reconfigurable DRA and Efficiency Measurement94

5.1 Introduction94

5.2 Phase Shifter Chips95

5.3 Mechanical Phase Shifter96

5.4 Electrical Phase Shifters96

5.5 PRDPDRA with GaAs SPDT Switches99

5.6 Comparison Between PRDPDRA with GaAs SPDT Switches and
Hardwired Switches104

5.7 Antenna Efficiency Measurement105

5.8 Conclusion112

5.9 References113

Chapter 6 Miniaturized Antennas for Picocells/ Femtocells and TV White Space116

6.1 Introduction116

6.2 Antenna Miniaturization via Shaping116

6.2.1 Quasiselfcomplementary UWB antenna120

6.2.2 Slot UWB antenna121

6.2.3 Monopole UWB antenna122

6.3 Antenna Miniaturization via Material Loading125

6.4 Frequency Tuneable Hexaferrite Antenna129

6.5 Conclusion132

6.6 References132

Chapter 7 Conclusion and Future Work135

7.1 Conclusion135

7.2 Key Contributions138

7.3 Future Work139

7.4 References142

Abbreviations143