Thesis (Ph.D.)--Tufts University, 2002. / Adviser: Mohammed Afsar. Submitted to the Dept. of Electrical Engineering. Includes bibliographical references (leaves 121-128). Access restricted to members of the Tufts University community. Also available via the World Wide Web;

Thesis (M.S.)--Ohio University, November, 1995. / Title from PDF t.p.

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published_or_final_version / Electrical Engineering / Master / Master of Science in Engineering

by Leung Tin Chi. / Thesis (M.Phil.)--Chinese University of Hong Kong, 2003. / Includes bibliographical references (leaves 106-108). / Abstracts in English and Chinese. / Abstract / Acknowledgements / Table of Contents / Chapter Chapter 1 --- Introduction --- p.1 / Chapter 1.1 --- Balun Structures --- p.2 / Chapter 1.2 --- Balun Parameters --- p.4 / Chapter 1.3 --- LTCC Multi-layer Balun --- p.5 / Chapter 1.4 --- Original Contributions of The Thesis --- p.7 / Chapter Chapter 2 --- Background --- p.8 / Chapter 2.1 --- Lumped Elements Baluns --- p.8 / Chapter 2.1.1 --- λ/4 Transmission Line Equivalent Circuit Model --- p.10 / Chapter 2.1.2 --- 3λ/4 Transmission Line Equivalent Circuit Model --- p.14 / Chapter 2.1.3 --- Design Procedure of Lumped Element Balun --- p.18 / Chapter 2.2 --- Distributed Baluns --- p.29 / Chapter 2.2.1 --- Coupled Line --- p.29 / Chapter 2.2.2 --- Marchand Balun --- p.34 / Chapter 2.2.3 --- Stepped Impedance Balun --- p.38 / Chapter 2.2.4 --- New Structure Coupled-Line Balun --- p.53 / Chapter 2.3 --- Planar Balun --- p.63 / Chapter 2.4 --- Advantage and Disadvantage of Existed Balun Design --- p.69 / Chapter Chapter 3 --- Size Reduction Method of Coupled Lines --- p.71 / Chapter 3.1 --- New Proposed Method of Coupled Line Size Reduction --- p.71 / Chapter 3.2 --- Simulation Result of Capacitor Loaded Coupled Line --- p.77 / Chapter Chapter 4 --- Capacitor Loaded Coupled Line Balun --- p.82 / Chapter 4.1 --- Simulation Result of Capacitor Loaded Coupled-Line Balun --- p.82 / Chapter Chapter 5 --- Design of New Coupled Line Balun Using Capacitor Loaded Coupled Lines --- p.88 / Chapter 5.1 --- Design Specifications of Reduced Coupled-Line Balun --- p.89 / Chapter 5.2 --- Design of Capacitors --- p.90 / Chapter 5.3 --- Layout and Simulation Result of 2.4GHZ LTCC Capacitor Loaded Coupled-Line Balun --- p.96 / Chapter Chapter 6 --- Conclusion and Future Work --- p.104 / References --- p.106 / Author's Publication --- p.109 / Appendix A Marchand Balun --- p.110 / Appendix B Reconstruction of S-Matrix for a 3-Port Measurement at Only Two-Ports --- p.117 / Appendix C Renormalization of Balun S-Matrix with Load Termination Z1 from S-Matrix with Load Termination Z0 --- p.120 / Appendix D Sensitivity analysis for capacitor loaded coupled line balun --- p.122

Thesis (M. Sc.)--University of Hong Kong, 1964. / Mimeographed.

This dissertation presents several solutions on the simulation of weakly nonlinear circuits. The work is motivated by the increasing demand on fast yet accurate simulation methods circuits (IC)s, and the current lack of such methods in the electronic design automation (EDA) / computer-aided design (CAD) community. Three types of frequency domain methods are studied to analyze weakly nonlinear circuits. The first method employs numerical multi-dimensional inverse Laplace transform based on Laguerre function expansion. An adaptive mesh refinement (AMR) technique is developed and its parallel implementation is introduced to speed up the computation. The second method applies a Fourier series based algorithm to invert Laplace transform. The algorithm is straightforward to implement, and gives increasing accuracy with increasing number of frequency sampling points. It employs a fast Fourier transform (FFT)-based method to directly invert the frequency domain solution. Its parallel routine is also studied. The third method is based on Gaver functional. It enjoys a high accuracy independent of the number of sampling points, and for multidimensional simulation, only the diagonal points in the matrix are required to be computer, which can be further speeded up by parallel implementation. Numerical results show that the aforementioned three methods enjoy good accuracy as well as high efficiency. A comparative study is carried out to investigate the strengths and drawbacks of each method. / published_or_final_version / Electrical and Electronic Engineering / Master / Master of Philosophy

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