v
TABLE OF CONTENTS
Abstract i
Acknowledgement iii
Publications iv
Table of Contents v
List of Acronyms vii
List of Figures x
List of Tables xviii
Chapter 1 : INTRODUCTION
1.1 Motivation
1 1.2
Electromagnetic Band Gap 3
1.3 Diversity Antenna
5 1.4
Leaky Wave Antenna and Surface Wave Antenna 7
1.5 Microstrip Patch Array Antenna Mutual Coupling Reduction Using
EBG. 9
1.6 Phased Array Antenna
11 1.7
Thesis Outline 12
References 15
Chapter 2 : BACKGROUND STUDY
2.1 Introduction
25 2.2
Electromagnetic Band Gap 26
2.2.1 Phase Reflection for the EBG Surface
27 2.2.2
EBG Operating Frequency. 30
2.2.3 Electromagnetic Band Gap Bandwidth
34 2.2.4
EBG Performance under Incident Wave. 37
2.3 Surface wave and Leaky Wave
38 2.4.
Microstrip Patch Antenna 39
vi
2.4.1 Mutual Coupling between the array elements
42 2.4.2
The Effect of the Antenna Arrangement on the Mutual Coupling within the Array Elements.
45 2.5
Phased Array Antenna 48
2.5.1 Grating Lobe for a Phased Array Antenna.
51 2.5.1
Phased Array Field Pattern. 53
2.5.2 Scan Blindness for Phased Array Antenna
56 2.6
Simulation Technique 58
2.7 Conclusion
60 Reference
61
Chapter 3 : ANTENNA BEAM STEERING USING SECTORIZED EBG
3.1 Introduction
64 3.1.1
Motivation 66
3.2 Patch Antenna Beam Steering using a Sectorized Square Mushroom-
like EBG 67
3.3 Antenna Beam Steering using a Sectorized Circular EBG
75 3.4
Fabrication and Measurement 83
3.5 Electromagnetic Band Gap Sector with a Switch Board
87 3.6
Conclusion 90
Reference 92
Chapter 4 : MICROSTRIP PATCH ARRAY ANTENNA MUTUAL COUPLING CONTROL USING MINIATURIZED EBG
4.1 Introduction
94 4.1.1
Motivation 95
4.2 Development of a Miniaturized Capacitive Loaded EBG
97 4.3
Two elements Microstrip Patch Array Antenna 105
4.3.1 Mutual Coupling Reduction using a Miniaturized
Capacitive Loaded EBG 107
vii
4.3.2 Comparison of the Miniature capacitive EBG structure
with the mushroom-like EBG 112
4.3.3 Fabrication and Measurement
117 4.4
Mutual Coupling Control within the Array Elements using Miniaturized EBG.
121 4.4.1
Signal Channelling within Microstrip Array Antennas using Miniaturized EBG.
122 4.4.2
Isolation of Array Elements using Miniaturized EBG. 127
4.4.3 Switching Surface Wave Propagation within Array
Elements Using Miniaturized EBG. 132
4.5 Conclusion
138 References
140
Chapter 5 : MICROSTRIP PHASED ARRAY ANTENNA SCAN BLINDNESS ELIMINATION USING MINIATURIZED EBG
