CONTENT
CHAPTER CONTENT PAGE
PROJECT TITLE i
DECLARATION ii
DEDICATION v
ACKNOWLEDGEMENT vi
ABSTRACT vii
ABSTRAK viii
CONTENT ix
LIST OF TABLES xii
LIST OF FIGURES xiii
LIST OF APPENDIX xv
I
INTRODUCTION 1
1.1 Background
1 1.2
Problem Statement 2
1.3 Research Objective
2 1.4
Scope of Study 2
1.5 Organization of Study
2 II
LITERATURE REVIEW 4
2.1 Introduction
4 2.2
Characteristic of Defected Ground Structure DGS
5
2.3 Equivalent Circuit of Defected Ground
Structure DGS 6
2.4 S-Parameters
8 2.5
Application of DGS in millimeter wave frequency
9 2.6
Advantages of DGS 11
2.7 Computer-aided Design Software
11 2.8
Hybrid Microwave Integrated Circuits HMIC
12 2.9
Direct Broadcast Satellite 14
2.9.1 Superheterodyne Receiver System 15
III METHODOLOGY
17
3.1 Introduction
17 3.2
Planning of Study 17
3.2.1 Problem Formulation 19
3.2.2 Define Objective and Scopes 19
3.2.3 Literature Review 19
3.2.4 Design Flows 19
3.2.4.1 Equivalent Circuit Design 21
3.2.4.2 Layout Design 24
3.2.4.3 Simulation 33
IV
RESULTS AND DISCUSSION 34
4.1 Results
34 4.1.1 Schematic Design
34 4.1.2 Layout Design
37 4.1.2.1 Transmission Line Design
37 4.1.2.2 Defected Ground Structure Unit
Design 38
4.2 Discussion
40
V
RECOMMENDATIONS AND CONCLUSION 42
5.1 Future Work
42 5.2
Conclusion 43
REFERENCE 44
APPENDICES 46
APPENDIX A 47
LIST OF TABLES
NO TITLE
PAGE
2.1 Requirements of a circuit design.
13 2.2
Typical properties of common hard substrate materials. 14
4.1 Schematic Simulation Result.
35 4.2
Dimensions of Transmission Line for different substrate. 38
4.3 The dimensions of DGS for center frequency at 9.3GHz.
38
LIST OF FIGURES
NO TITLE
PAGE
2.1 Some resonant structures used for Defected Ground
Structure DGS applications. 6
2.2 Three-dimensional 3D view of a dumbbell DGS unit.
6 2.3
Equivalent circuit of the dumbbell circuit of DGS unit. 7
2.4 Butterworth-type one pole prototype low-pass filter
circuit. 7
2.5 Two port network
8 2.6
Simulated S-parameters for dumbbell DGS unit. 10
2.7 Direct Broadcast Satellite System DBS.
15 2.8
Basic construction of the front end of Superheterodyne Receiver.
16 2.9
Image Parameter 16
3.1 General flow chart.
18 3.2
Advanced Design System ADS 20
3.3 Flow chart of DGS circuit design
20 3.4
Flow chart of DGS layout design. 21
3.5 New Schematic Window.
22 3.6
S-parameter Simulation and DC Simulation. 22
3.7 Simulate button.
23 3.8
Tune Parameters button. 23
3.9 Alumina 99.6 substrate.
24 3.10
FR4 substrate in LineCalc. 25
3.11 New Layout Window
26 3.12
UnitScale settings 26
3.13 Layer options.
27
3.14 Insert rectangle button.
27 3.15
The complete view of dumbbell shape design. 28
3.16 Complete design of DGS unit.
29 3.17
Alumina 99.6 substrate settings. 30
3.18 Metallization Layers settings.
31 3.19
Settings for each port. 31
3.20 Simulation Control windows
32 4.1
Schematic Design. 35
4.2 Frequency Responses S21 and S11.
36 4.3
Frequency Response S21 when the capacitance value drecreases. 36 4.4
Frequency Response S21 when the inductance value decreases. 37
4.5 Layout design of Defected Ground Structure.
39 4.6
Frequency response of the DGS by using FR4 substrate. 39
4.7 Frequency response of the DGS by using Alumina 99.6
substrate. 40
LIST OF APPENDIX
NO TITLE
PAGE A
Substrate Material Properties 47
CHAPTER I
INTRODUCTION
1.1 Background
