English  |  正體中文  |  简体中文  |  全文筆數/總筆數 : 80990/80990 (100%)
造訪人次 : 40681045      線上人數 : 1305
RC Version 7.0 © Powered By DSPACE, MIT. Enhanced by NTU Library IR team.
搜尋範圍 查詢小技巧:
  • 您可在西文檢索詞彙前後加上"雙引號",以獲取較精準的檢索結果
  • 若欲以作者姓名搜尋,建議至進階搜尋限定作者欄位,可獲得較完整資料
  • 進階搜尋


    請使用永久網址來引用或連結此文件: http://ir.lib.ncu.edu.tw/handle/987654321/8286


    題名: 對稱式共面波導耦合線帶通濾波器;Symmetric CPW Coupled-Line Band-Pass Filters
    作者: 高宗平;Tsung-Ping Kao
    貢獻者: 通訊工程研究所碩士在職專班
    關鍵詞: 共面波導;濾波器;CPW;filters
    日期: 2007-07-04
    上傳時間: 2009-09-22 11:22:30 (UTC+8)
    出版者: 國立中央大學圖書館
    摘要: 本論文針對對稱式共面波導耦合線帶通濾波器的理論、設計流程及實驗,做了詳細的研究。 此對稱架構,可視為傳統型四分之一波長電容電感耦合型帶通濾波器與帶磚型濾波器的結合。為了設計成對稱式結構,我們使用了非對稱的三線式共面波導耦合線來設計,因而不需要額外的磅線或空氣橋來抑制奇模態的產生,故在實現時製作簡單是其中一個優點。此外,由於採用四分之一波長共振機制,不但有電路面積縮小的優點,更因為電路佈局的關係,其產生的寄生效應可在濾波器的通帶兩側各置入一個傳輸零點,藉此改善通帶附近的止帶衰減,以期符合系統規格需要。 在論文中,我們針對不同的佈局方式作比較,對於末端短路耦合線中心線接地實現的問題,也利用佈局的方式解決。 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.
    顯示於類別:[通訊工程學系碩士在職專班 ] 博碩士論文

    文件中的檔案:

    檔案 大小格式瀏覽次數


    在NCUIR中所有的資料項目都受到原著作權保護.

    社群 sharing

    ::: Copyright National Central University. | 國立中央大學圖書館版權所有 | 收藏本站 | 設為首頁 | 最佳瀏覽畫面: 1024*768 | 建站日期:8-24-2009 :::
    DSpace Software Copyright © 2002-2004  MIT &  Hewlett-Packard  /   Enhanced by   NTU Library IR team Copyright ©   - 隱私權政策聲明