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Thesis (M.S.)--Ohio University, June, 1991. / Title from PDF t.p.

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University of Macau / Faculty of Science and Technology. / Department of Electrical and Computer Engineering

Thesis (Ph. D.)--Lehigh University, 2000. / Includes vita. Includes bibliographical references (leaves 142-149).

Ip, Wei Chi. / Thesis (M.Phil.)--Chinese University of Hong Kong, 2011. / Includes bibliographical references (leaves 92-94). / Abstracts in English and Chinese. / Abstract --- p.i / 摘要 --- p.ii / Acknowledgement --- p.iii / Table of Content --- p.iv / Lists of Figures --- p.vii / Lists of Tables --- p.xii / Chapter Chapter 1: --- Introduction --- p.1 / Chapter 1.1 --- Research Motivation and Obj ective --- p.1 / Chapter 1.2 --- Original Contribution --- p.2 / Chapter 1.3 --- Overview of the Thesis Organization --- p.3 / Chapter 1.4 --- "Research Approach, Assumptions and Limitations" --- p.4 / Chapter Chapter 2: --- Power Divider Design Fundamentals --- p.5 / Chapter 2.1 --- Power Divider Basics --- p.5 / Chapter 2.2 --- Wilkinson Power Divider --- p.6 / Chapter 2.3 --- Power Divider with Unequal Power Division --- p.8 / Chapter 2.4 --- Multi-way Power Divider --- p.9 / Chapter 2.4.1 --- Wilkinson N-way Hybrid --- p.10 / Chapter 2.4.2 --- Radial Hybrid --- p.11 / Chapter 2.4.3 --- Fork Hybrid --- p.12 / Chapter 2.4.4 --- Multi-layer Approach --- p.IS / Chapter 2.4.5 --- Power Recombination Concept --- p.15 / Chapter 2.4.6 --- Multi-coupled-line Approach --- p.18 / Chapter Chapter 3: --- Conventional Power Divider Designs with Harmonic Suppression --- p.20 / Chapter 3.1 --- Resonating-stubs Topology --- p.20 / Chapter 3.2 --- Asymmetric Defected Ground Structure (DGS) --- p.26 / Chapter 3.3 --- Anti-Coupled Line Structure --- p.30 / Chapter 3.4 --- Microstrip Electromagnetic Bandgap (EBG) Based Topology --- p.32 / Chapter 3.5 --- Embedded Resonators Topology --- p.37 / Chapter 3.6 --- Extended Line Approach --- p.39 / Chapter Chapter 4: --- New 2-way Power Divider Design with Spurious Suppression and Impedance Transformation --- p.41 / Chapter 4.1 --- Proposed Topology --- p.41 / Chapter 4.2 --- Design and Analysis --- p.42 / Chapter 4.3 --- Simulation Study --- p.45 / Chapter 4.4 --- Experimental Verification --- p.50 / Chapter 4.5 --- Summary --- p.57 / Chapter Chapter 5: --- New 2-way Power Divider Design with Extended Spurious Suppression --- p.58 / Chapter 5.1 --- Proposed Topology --- p.58 / Chapter 5.2 --- Design and Analysis --- p.59 / Chapter 5.3 --- Simulation Study --- p.64 / Chapter 5.3 --- Experimental Verification --- p.68 / Chapter 5.4 --- Summary --- p.71 / Chapter Chapter 6: --- New 2-way Unequal Power Divider Design with Dual-harmonic Rejection --- p.72 / Chapter 6.1 --- Proposed Topology --- p.72 / Chapter 6.2 --- Design and Analysis --- p.73 / Chapter 6.3 --- Simulation Study --- p.76 / Chapter 6.4 --- Experimental Verification --- p.77 / Chapter 6.4 --- Summary --- p.80 / Chapter Chapter 7: --- New 3-way Power Divider Design with Multi-harmonic Rejection..… --- p.81 / Chapter 7.1 --- Proposed Topology --- p.81 / Chapter 7.2 --- Design and Analysis --- p.82 / Chapter 7.3 --- Simulation Study --- p.85 / Chapter 7.4 --- Experimental Verification --- p.87 / Chapter 7.4 --- Summary --- p.90 / Chapter Chapter 8: --- Conclusion --- p.91 / References --- p.92 / Author's Publications and Awards --- p.95 / Chapter Appendix 1: --- ABCD Parameters of Some Useful Two-port Circuits --- p.96 / Chapter Appendix 2: --- More Designs of Proposed Configuration in Chapter 5 --- p.97 / Chapter A2.1 --- Miniaturized version of Example 1 --- p.97 / Chapter A2.2 --- Design with improved stop-band response --- p.101 / Chapter A2.3 --- Design of prototype with 2 GHz operating frequency --- p.104 / Chapter Appendix 3: --- Brief Summary of Power Dividers with Harmonic Suppression --- p.108

In this thesis a numerical technique to model general microstrip asymmetric and multiple step discontinuities is presented. The method is based on a magnetic wall waveguide model that is assumed to be valid for describing the electromagnetic fields associated with the microstrip line and in the vicinity of microstrip discontinuities. The fields are expanded in the uniform regions and the mode-matching method is applied at the discontinuities to analyze for the frequency dependent transmission properties of the multi ports. The generalized scattering matrix technique is used to model cascaded interacting discontinuities and is used to compute the properties of double-step and multi port structures. The generalized scattering matrix formulation takes into account the scattering phenomena of the dominant and all of the higher-order modes including evanescent ones. The validity of this model has been discussed extensively, and it is shown that the model can be used to describe the microstrip discontinuities with acceptable accuracy. The technique is applied (1) to study the transmission characteristics of asymmetric step discontinuities; (2) to design a filter for a desired frequency range using interacting asymmetric double step micros trip line; and (3) to design a new nominal 3db power devider of large bandwidth consisting of a three port rectangular patch. The techniques and models presented can be used in computer-aided analysis and design of such circuits. / Graduation date: 1993

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