| Summary: | 碩士 === 國立高雄大學 === 電機工程學系碩士班 === 100 === In this thesis, the main study focuses on using a variety of coupled lines to achieve the miniaturization and harmonic suppression in Wilkinson power dividers. Firstly, the characteristics of a parallel coupled line are discussed, and the fundamentals of a traditional Wilkinson power divider are also introduced. Secondly, a Wilkinson power divider consisting of two section parallel coupled lines is proposed. The electrical lengths of the cascading coupled lines are 财/6 and 财/8, respectively, to suppress the second and third harmonics. Finally, a Wilkinson power divider utilizing a parallel coupled line and an open stub is presented. The electrical lengths of the parallel coupled line and the open stub are carefully designed to produce two transmission zeros at the second and third harmonic frequencies, respectively, for the harmonic suppression. In addition, 27% length reduction is achieved. For the proposed power dividers consisting of coupled lines in this thesis, measurement data are presented and shows a good consistency with the full-wave simulation results.
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