Title page for 93533015


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Student Number 93533015
Author Tsung-Ping Kao(高宗平)
Author's Email Address tpkao@seed.net.tw
Statistics This thesis had been viewed 2258 times. Download 3688 times.
Department Executive Master of Communication Engineering
Year 2006
Semester 2
Degree Master
Type of Document Master's Thesis
Language zh-TW.Big5 Chinese
Title Symmetric CPW Coupled-Line Band-Pass Filters
Date of Defense 2007-07-04
Page Count 67
Keyword
  • CPW
  • filters
  • Abstract In this study, a class of symmetric CPW coupled-line bandpass filters is proposed. The proposed filters use the asymmetric three-line parallel-coupled CPW line and lump-element J- or K- inverters to realize symmetric CPW filter structures. Due to the symmetry, no bondwires or airbridges are required, which simplifies the fabrication process. The proposed filter structures are equivalent to quarter-wavelength resonator bandpass filters, such that they occupy only half the circuit area compared with the conventional ones, and the first spurious passbands of them occur at three times center frequency. In addition, by introducing the cross-coupling effect, two transmission zeros at the upper and lower stopbands can be created to further improve the selectivity. The working mechanisms of the proposed filters are described and design procedures are established in this thesis, so we can design the filter easily with the given specifications. Specifically, symmetrical CPW bandpass filters based on open-end and short-end parallel-coupled CPW line are designed and implemented, and the simulation results agree quite well with the measurement results.
    Table of Content 第一章 緒論6
    1.1 研究背景與動機6
    1.2 相關研究9
    1.3 論文架構12
    第二章 濾波器基本理論13
    2.1 簡介13
    2.2 集總式濾波器13
    2.3 分散式濾波器21
    2.4 耦合線濾波器33
    第三章 對稱式共面波導濾波器38
    3.1 簡介38
    3.2 等效電路39
    3.3 設計流程44
    3.4 特性分析46
    3.5 結論52
    第四章 設計、製作與量測結果53
    4.1 簡介53
    4.2 非對稱式耦合線濾波器設計54
    4.3 對稱式末端開路耦合線濾波器設計57
    4.4 對稱式末端短路耦合線濾波器設計64
    4.5 結論66
    第五章 結論67
    參考文獻69
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    [17]Y.-S. Lin, C.-H. Wang, C.-H. Wu, and C. -H. Chen, “Novel compact parallel- coupled microstrip bandpass filter with lumped-element K-inverters,” IEEE Trans. Microwave Theory Tech., vol. 53, pp.2234-2238, July. 2005. 
    [18] Y.-S. Lin; M.-S. Hsu; C.-H. Wang; C.-H. Chen;”Millimeter-wave coplanar-waveguide parallel-coupled bandpass filters with lumped-element K-inverters” 2005 European Microwave Conference b Volume 2, 4-6 Oct. 2005 Page(s):4 pp.
    [19] Yan, Y.-M.; Chang, Y.-T.; Wang, H.; Wu, R.-B.; Chen, C. -H., “Highly Selective Microstrip Bandpass Filters in Ka-Band,” European Microwave Conference, 2002. 32nd Oct. 2002 Page(s):1 – 4.
    [20]許旻舜,”共面波導耦合線帶通濾波器”,國立台灣大學電信工程研究所碩士論文2004
    [21]方國誌,”超寬頻共平面波導帶通濾波器之研製”,國立中央大學電機工程研究所碩士論文2006
    Advisor
  • Y.J. Chan(詹益仁)
  • Files
  • 93533015.pdf
  • approve in 1 year
    Date of Submission 2007-07-24

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