中大機構典藏-NCU Institutional Repository-提供博碩士論文、考古題、期刊論文、研究計畫等下載:Item 987654321/63514
English  |  正體中文  |  简体中文  |  全文筆數/總筆數 : 78728/78728 (100%)
造訪人次 : 33564853      線上人數 : 1515
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/987654321/63514


    題名: 印刷式智慧型LTE/WWAN行動手持裝置之多頻段單極天線設計;Multiband Printed Monopole Antenna Design for LTE / WWAN Smart Mobile Devices
    作者: 黃志明;HUANG,CHIH-MING
    貢獻者: 通訊工程學系在職專班
    關鍵詞: 單極天線;長期演進;無線廣域網路;LTE;monopole antenna;WWAN
    日期: 2014-01-16
    上傳時間: 2014-04-02 15:43:34 (UTC+8)
    出版者: 國立中央大學
    摘要: 本篇論文主要探討可適用LTE/WWAN多頻段單極天線設計,並尋找簡易設計方式下,讓此天線將呈現於能滿足無線廣域網路及長期演進的八頻工作頻段,且適合內置於智慧型手機。本文以單一路徑天線為基礎改良,產生0.86 GHz共振頻率點。然後,在單極天線路徑增加taper的調整機制,使高頻2.16GHz能有良好的阻抗匹配;接著,調整線寬線距,產生1.79GHz共振頻率點,並使它有良好的阻抗匹配。最後,利用並聯電感、串聯電容調整低頻阻抗匹配,使多頻段單極天線能夠在低、中、高頻都能有良好的阻抗匹配。滿足反射係數以-6 dB來定義,此多頻段單極天線足以涵蓋LTE700、LTE2300、LTE2500、GSM80、GSM900、DCS1800、PCS1900及UMTS等八個操作頻段。最後,提出簡單的結構、量產容易、成本低廉且可應用LTE/WWAN的印刷電路板天線。
    本論文利用HFSS軟體進行模擬[23],且天線面積大小僅為45 × 19 × 0.8 mm3。於FR4電路基板上,也實際測量天線之反射係數、輻射場型、增益以及輻射效率,來證實所模擬設計的平面天線確實可以適用,詳細的天線設計方式及實驗數據將在本論文中說明。; This thesis mainly discusses the designs LTE / WWAN multi-band monopole antenna for the applications of the wireless WAN and long-term evolution of eight frequency operation bands. The proposed antenna is also suitable for being embedded in smart mobile devices. In the thesis, based on a single path antenna improvement, the resonance frequency of 0.86 GHz is generated. Good impedance matching in the high band is obtained by adding a tapered strip to the antenna creating resonance at 2.16 GHz. Then, by adjusting the line width, resonance at 1.79 GHz and good impedance matching are obtained. Finally, by using shunt inductance and the series capacity adjustment, low frequency impedance matching is achieved. The proposed multi-band monopole antenna has achieved good impedance matching in the low, medium and high frequency bands. The multi-band monopole antenna can be operated in the eight operating frequency bands of the LTE700, LTE2300, LTE2500, GSM800, GSM900, DCS1800, PCS1900 and UMTS. Also the size of antenna is of only 45 * 19 * 0.8 mm3. Various antenna parameters, such as reflection coefficient, radiation patterns, gain, and radiation efficiency, are also measured to validate the proposed antennas.
    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 描述 大小格式瀏覽次數
    index.html0KbHTML626檢視/開啟


    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