Report (M.S.)--Virginia Polytechnic Institute and State University. M.S. 1992. / Vita. Abstract. Includes bibliographical references (leaf 76). Also available via the Internet.

Thesis (Ph. D.)--University of Texas at Austin, 2006. / Vita. Includes bibliographical references.

Thesis (Ph. D.)--University of Texas at Austin, 2007. / Vita. Includes bibliographical references.

Thesis (MScEng)--Stellenbosch University, 2005. / ENGLIAH ABSTRACT: Data transmission plays a cardinal role in today's society. The key element of such a system is the antenna which is the interface between the air and the electronics. To operate optimally, many antennas require baluns as an interface between the electronics and the antenna. This thesis presents the problem definition, analysis and performance characterization of baluns. Examples of existing baluns are designed, computed and measured. A comparison is made between the analyzed baluns' results and recommendations are made. / AFRIKAANSE OPSOMMING: Data transmissie is van kardinale belang in vandag se samelewing. Antennas is die voegvlak tussen die lug en die elektronika en vorm dus die basis van die sisteme. Vir baie antennas word 'n balun, wat die elektronika aan die antenna koppel, benodig om optimaal te funktioneer. Die tesis omskryf die probleemstelling, analiese en 'n prestasie maatstaf vir baluns. Prakties word daar gekyk na huidige baluns se ontwerp, simulasie, en metings. Die resultate word krities vergelyk en aanbevelings word gemaak.

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Approved for public release; distribution is unlimited / This thesis addresses the prototyping, measurement, and validation of two circularly polarized microstrip patch antennas designed by LTJG Mahmut Erel for the NPSAT-1. The antenna system (receive and transmit), consisting of two antennas on a ground plane and their feed systems, was field-tested. The results were compared to the CSTʼ Microwave Studio. Finite Difference Time Domain (FDTD) software package predictions in order to verify that this design satisfies the NPSAT-1 requirements for bandwidth, free-space radiation pattern and low-profile shape. / Lieutenant Junior Grade, Turkish Navy

by Leung, Kowk-wa. / Thesis (Ph.D.)--Chinese University of Hong Kong, 1993. / Includes bibliographical references (leaves 207-211). / Dedication / Acknowledgements / CHAPTER / Chapter 1. --- INTRODUCTION --- p.1 / Chapter 2. --- ANALYSIS OF A PROBE-FED HEMISPHERICAL DR ANTENNA --- p.13 / Chapter 2.1 --- Introduction --- p.13 / Chapter 2.2 --- Problem Formulation --- p.14 / Chapter 2.3 --- Single Cavity Mode Approximation --- p.33 / Chapter 2.3.1 --- Evaluation of Input Impedance --- p.33 / Chapter 2.3.2 --- Measured and Computed Results --- p.36 / Chapter 2.4 --- Rigorous Moment Method Solution --- p.47 / Chapter 2.4.1 --- Efficient Evaluation of GEz --- p.47 / Chapter 2.4.2 --- Moment Method Formulation for Input Impedance --- p.51 / Chapter 2.4.3 --- Evaluation of Z-matrix --- p.56 / Chapter 2.4.4 --- Evaluation of V-matrix --- p.62 / Chapter 2.4.5 --- Convergence Checks --- p.65 / Chapter 2.4.6 --- Measured and Computed Results --- p.91 / Chapter 2.4.7 --- Conclusion --- p.113 / Chapter 2.5 --- Theoretical Single Cavity Mode Radiation Patterns --- p.114 / Chapter 2.6 --- Conclusion --- p.117 / Chapter 3. --- ANALYSIS OF APERTURE COUPLED HEMISPHERICAL DR ANTENNA --- p.118 / Chapter 3.1 --- Introduction --- p.118 / Chapter 3.2 --- Problem Formulation --- p.120 / Chapter 3.3 --- Moment Method Solution --- p.133 / Chapter 3.4 --- Magnetic Field Green's Function of DR Antenna --- p.138 / Chapter 3.5 --- Efficient Evaluations of Antenna Green's Function and Yamn --- p.150 / Chapter 3.5.1 --- Modal Green's function of DR Antenna --- p.150 / Chapter 3.5.2 --- Evaluation of Yamn --- p.153 / Chapter 3.6 --- Single Cavity Mode Approximation --- p.155 / Chapter 3.6.1 --- Evaluation of Input Impedance --- p.155 / Chapter 3.6.2 --- Measured and Computed Results --- p.157 / Chapter 3.6.3 --- Conclusion --- p.165 / Chapter 3.7 --- Exact Modal Solution --- p.166 / Chapter 3.7.1 --- Convergence Checks --- p.166 / Chapter 3.7.2 --- Measured and Computed Results --- p.166 / Chapter 3.7.3 --- Conclusion --- p.187 / Chapter 3.8 --- Conclusion --- p.188 / Chapter 4. --- CONCLUSION --- p.189 / APPENDIX A PROOF OF EQUATION (2-16) --- p.192 / APPENDIX B DERIVATION OF EQUATION (2-43) --- p.193 / APPENDIX C DERIVATION OF EQUATION (2-44) --- p.196 / APPENDIX D PROPAGATION CONSTANT OF FIELDS INSIDE MICROSTRIPLINE --- p.198 / APPENDIX E NUMERICAL TECHNIQUE OF SPECTRAL DOMAIN INTEGRAL --- p.200 / APPENDIX F EXPERIMENTAL SET-UP FOR PROBE- FED DR ANTENNA MEASUREMENT --- p.203 / APPENDIX G EXPERIMENTAL SET-UP FOR APERTURE- COUPLED DR ANTENNA MEASUREMENT --- p.205 / REFERENCES --- p.207 / LIST OF PUBLICATIONS PRODUCED DURING THE STUDY A-l / INTERNATIONAL AWARD OBTAINED DURING THE STUDY B-l

Ho Kwok Ching. / Thesis (M.Phil.)--Chinese University of Hong Kong, 2000. / Includes bibliographical references (leaves 107-111). / Abstracts in English and Chinese. / Content --- p.5 / Chapter 1 --- Introduction --- p.7 / Chapter 2 --- Background Theory --- p.9 / Chapter 2.1 --- Background history --- p.9 / Chapter 2.2 --- Finite Difference Time Domain Method --- p.10 / Chapter 2.2.1 --- Basic Formulation --- p.10 / Chapter 2.2.2 --- Finite Difference Expression: --- p.11 / Chapter 2.2.3 --- Courant Stability Criterion --- p.13 / Chapter 2.3 --- Absorbing Boundary Condition (PML) --- p.13 / Chapter 2.3.1 --- "Field -Splitting Modification of Maxwell's equation, TE case" --- p.14 / Chapter 2.3.2 --- Propagation of a TE Plane Wave in a PML Medium --- p.15 / Chapter 2.3.3 --- Transmission of a wave through PML-PML Interfaces --- p.19 / Chapter 2.3.4 --- PML for FDTD in 2D domain --- p.23 / Chapter 2.3.5 --- Extension to Three Dimension Case --- p.25 / Chapter 2.3.6 --- Obtaining S-parameters for General Microwave circuit --- p.26 / Chapter 2.4 --- Extended Finite Difference Time Domain Method --- p.29 / Chapter 2.4.1 --- Direct Implementation of Lumped Elements --- p.30 / Chapter 2.4.2 --- Equivalent-Source Techniques --- p.31 / Chapter 2.5 --- EMC --- p.37 / Chapter 3 --- Novel Techniques for Extended FDTD Method --- p.38 / Chapter 3.1 --- Introduction --- p.38 / Chapter 3.2 --- The Improved FDTD-SPICE Interface --- p.38 / Chapter 3.3 --- The Improved DC Bias Source --- p.48 / Chapter 3.4 --- The Improved DC Biasing Component --- p.50 / Chapter 3.5 --- Example --- p.51 / Chapter 3.6 --- Program Architecture --- p.55 / Chapter 3.7 --- Conclusion --- p.57 / Chapter 4 --- Example Design --- p.58 / Chapter 4.1 --- Introduction --- p.58 / Chapter 4.2 --- Internal Antenna Design --- p.58 / Chapter 4.2.1 --- Half-wavelength Patch --- p.58 / Chapter 4.2.2 --- Quarter-wavelength patch --- p.63 / Chapter 4.3 --- RF Power Amplifier Circuit Design --- p.73 / Chapter 4.4 --- Active Internal Antenna Design --- p.88 / Chapter 4.4.1 --- Design --- p.88 / Chapter 4.4.2 --- Surface Wave Analysis 一 Transient state analysis --- p.91 / Chapter 4.4.3 --- Surface wave analysis -AC analysis --- p.95 / Chapter 4.4.4 --- Far Field Pattern --- p.101 / Chapter 4.5 --- Conclusion --- p.105 / Chapter 5 --- Conclusion: --- p.106 / Chapter 6 --- Reference List --- p.107 / Publication --- p.111

Zhang Jialiang. / Thesis (M.Phil.)--Chinese University of Hong Kong, 2006. / Includes bibliographical references (leaves 51-52). / Abstracts in English and Chinese. / Chapter Chapter 1 --- Introduction --- p.1 / Chapter 1.1 --- Motivation and Related Work --- p.1 / Chapter 1.2 --- Organization of the Thesis --- p.3 / Chapter Chapter 2 --- Interference Modeling for Directional Antennas --- p.5 / Chapter 2.1 --- Pair-wise Physical Link Interference Model of Generic Directional Antenna --- p.6 / Chapter 2.2 --- Potential Interference Region --- p.8 / Chapter 2.3 --- Antenna Pattern and Phased Array Antenna --- p.9 / Chapter Chapter 3 --- Null Width of Directional Antennas --- p.12 / Chapter 3.1 --- Concept of Null Width --- p.12 / Chapter 3.2 --- Effective Null Width and Interference --- p.14 / Chapter 3.2.1 --- Probability of Interference --- p.14 / Chapter 3.2.2 --- Scenario of Directional Transmission and Omni-directional Reception --- p.15 / Chapter 3.2.3 --- Scenario of Directional Transmission and Directional Reception --- p.17 / Chapter 3.3 --- Properties of General Effective Beam Width --- p.18 / Chapter 3.4 --- Numerical Scaling Law of Effective Beam Width of Some Particular Antenna Patterns --- p.23 / Chapter 3.5 --- Summary --- p.26 / Chapter Chapter 4 --- Scaling Law of Network Capacity of Wireless Random Networks with Directional Antennas --- p.27 / Chapter 4.1 --- Random Network Model and Network Capacity --- p.27 / Chapter 4.2 --- Node distribution and MAC Protocol --- p.29 / Chapter 4.3 --- Scenario of Directional Transmission and Omni-directional Reception --- p.30 / Chapter 4.3.1 --- Probability of Transmission to be Success and Per-Link (Transport) Throughput --- p.30 / Chapter 4.3.2 --- Scaling Law of Network Capacity --- p.32 / Chapter 4.3.3 --- Concluding Remark --- p.37 / Chapter 4.4 --- Scenario of Directional Transmission and Directional Reception --- p.38 / Chapter 4.4.1 --- Antenna Steering Protocol --- p.39 / Chapter 4.4.2 --- Probability of Transmission to be Success --- p.40 / Chapter 4.4.3 --- Scaling Law of Network Capacity --- p.41 / Chapter 4.4.4 --- Scaling Law of Phased Array Antennas --- p.42 / Chapter Chapter 5 --- Conclusion --- p.44 / Appendix A: Proof of equation (22) --- p.47 / Appendix B: Proof of equation (28) --- p.49 / Appendix C: Constraint on Region of Optimality for pt and r --- p.50 / References --- p.51

Lam, Fuk Ming. / Thesis (M.Phil.)--Chinese University of Hong Kong, 2008. / Includes bibliographical references. / Abstracts in English and Chinese. / Abstract --- p.I / Acknowledgements --- p.V / Table of Contents --- p.VI / List of Figures --- p.IX / List of Tables --- p.XVI / Chapter Chapter 1 --- Introduction --- p.1 / Chapter 1.1 --- Background --- p.1 / Chapter 1.2 --- Overview of the Work --- p.5 / Chapter 1.3 --- Original contribution of this thesis --- p.6 / Chapter 1.4 --- Organization of this thesis --- p.7 / Chapter 1.5 --- Remarks on frequency dependent parameters in this thesis --- p.8 / Reference --- p.9 / Chapter Chapter 2 --- Small Antennas for mobile phone applications --- p.10 / Chapter 2.1 --- Introduction --- p.10 / Chapter 2.2 --- Definitions --- p.11 / Chapter 2.2.1 --- Quality factor --- p.11 / Chapter 2.2.2 --- Efficiency --- p.12 / Chapter 2.2.3 --- Return Loss and impedance bandwidth --- p.12 / Chapter 2.2.4 --- Antenna gain and radiation pattern --- p.13 / Chapter 2.3 --- Fundamental limitations of small antenna --- p.14 / Chapter 2.4 --- Low-profile and Dual-band techniques --- p.16 / Chapter 2.4.1 --- Inverted-L/F and Planar Inverted-F Antenna --- p.16 / Chapter 2.4.2 --- Dual-band PIFA --- p.21 / Chapter 2.4.3 --- Discussion on miniaturization of mobile phone antenna --- p.23 / Chapter 2.5 --- Ground plane effect of mobile phone antenna --- p.26 / Chapter 2.5.1 --- Optimal location to excite antenna over a finite ground plane --- p.26 / Chapter 2.5.2 --- Dependence of resonant frequency and impedance bandwidth on ground plane length --- p.27 / Chapter 2.5.3 --- Dual-resonator model for mobile phone antenna --- p.32 / Chapter 2.6 --- Summary --- p.38 / Reference --- p.38 / Chapter Chapter 3 --- A Multilayeredly Rolled Inverted-F Antenna for Dual-band Mobile Phones --- p.42 / Chapter 3.1 --- Introduction --- p.42 / Chapter 3.2 --- Literature review on rolled antennas --- p.43 / Chapter 3.3 --- Proposed MRIFA --- p.47 / Chapter 3.3.1 --- Antenna configuration --- p.47 / Chapter 3.3.2 --- Simulation studies --- p.51 / Chapter 3.3.3 --- Prototype and Experimental results --- p.59 / Chapter 3.3.4 --- Comparison with a reference PIFA --- p.66 / Chapter 3.4 --- Mobile phone installed with the MRIFA --- p.70 / Chapter 3.5 --- Summary --- p.80 / Reference --- p.81 / Chapter Chapter 4 --- A fast method to evaluate Total Isotropic Sensitivity (TIS) in mobile phone active measurement --- p.82 / Chapter 4.1 --- Introduction --- p.82 / Chapter 4.2 --- Proposed fast method for TIS evaluation --- p.85 / Chapter 4.2.1 --- Observed relationship between total Effective Isotropic Radiated Power (EIRP) and total Effective Isotropic Sensitivity (EIS) --- p.85 / Chapter 4.2.2 --- EIS's estimation from EIRPs for TIS evaluation --- p.89 / Chapter 4.3 --- Summary --- p.92 / Reference --- p.93 / Chapter Chapter 5 --- Conclusion --- p.94 / List of Publications --- p.96 / Appendix A - Details of sample mobile phones investigated in this thesis research --- p.97 / Appendix B - Active measurement of mobile phone's transmit power and receiver sensitivity --- p.107 / Appendix C - MRIFA realization procedure --- p.118