Global Analyses of Nonlinear Microwave Circuits

• Main Authors: Chang-Hung Tsai, 蔡昌宏
• Other Authors: Chun-Lin Lu
• Format: Others
• Language: zh-TW
• Published: 2004
• Online Access: http://ndltd.ncl.edu.tw/handle/80265822221743980737

碩士 === 國立高雄應用科技大學 === 電機工程系碩士班 === 92 === In this paper, harmonic balance techniques, simulated annealing algorithms and genetic algorithms are applied to the analyses of nonlinear microwave circuits, respectively. The harmonic balance technique sometimes gets stuck in local optimum solution and it always requires gradient operations in iteration procedures. Simulated annealing algorithms and genetic algorithms are stochastic approaches and are expected to have the capability in finding global solutions of nonlinear microwave circuits. They do not require a suitable guess of an initial solution and no gradient operations are required in iteration procedures. Based on these advantages, simulated annealing algorithms and genetic algorithms are applied to the analyses of nonlinear microwave circuits. Both of these two algorithms are frequently used in optimization problems. However, there are scarce studies involved in “analyzing” nonlinear problems using these two algorithms. In this study, these two algorithms are applied to the “analyses” of nonlinear microwave circuits. Their performances and characteristics are also compared with traditional harmonic balance techniques.