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研究生: 黃家偉
Chia-Wei Huang
論文名稱: 無線通訊之雙寬頻天線的設計與製作
Design and Implementation of Dual-Broadband Antenna for Wireless Communication
指導教授: 徐敬文
Ching-Wen Hsue
口試委員: 黃進芳
Jhin-Fang Huang
張勝良
Sheng-Lyang Jang
學位類別: 碩士
Master
系所名稱: 電資學院 - 電子工程系
Department of Electronic and Computer Engineering
論文出版年: 2007
畢業學年度: 95
語文別: 中文
論文頁數: 67
中文關鍵詞: 無線通訊天線
外文關鍵詞: wireless, communication
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  • 本論文主要是在探討T型型式的單極天線,天線實做方法是使用將輻射金屬線直接印刷在基板上的技術,使得天線具有輕薄短小的優點,且容易與電路基板相結合,提昇製作的便利與降低成本的特性。
    在此天線的設計過程中,會先依書本或文獻為依據,去找出最佳的架構。接著以高頻模擬軟體IE3D來求證是否準確,再以印刷電路板雕刻出天線的形狀。接著利用網路分析儀量測其反射損耗及阻抗頻寬,最後再以電磁無反射室量測實做天線的反射損耗與遠場之輻射場型。


    A new T-shape monopole antenna is proposed and studied experimentally. The antenna is materialized in a printed format on dielectric substrates. The advantages of these antennas are low- profile, light-weight and easy construction. They are easy to integrate with circuit substrates.
    Several antennas have been constructed to experimentally verify those results which were published in textbooks and papers. They are also verified by commercial electromagnetic simulation software tool IE3D.The measured input impedance, return loss and radiation patterns of the T-shape monopole antennas are presented and discussed.

    第一章 導論..........................................................1 1.1 研究動機與目的...........................................1 1.2 論文所設計頻段的規格與應用...............................2 1.3 內容大綱.................................................3 1.4 天線設計流程圖...........................................4 第二章 天線基本原理..................................................5 2.1 偶極天線介紹.............................................5 2.2 鏡像原理.................................................8 2.3 單極天線介紹............................................10 第三章 微帶天線與天線相關參數介紹...................................13 3.1微帶天線簡介.............................................13 3.1.1微帶天線之基本架構.................................13 3.1.2微帶天線的共振腔模型(Cavity Model).................15 3.1.3微帶天線頻寬.......................................18 3.2天線基板材料.............................................20 3.3共振基本定義.............................................21 3.4天線性能的判別...........................................23 3.4.1輸入阻抗(Input Impedance)..........................23 3.4.2反射損失(Return Loss)..............................24 3.4.3電壓駐波比(VSWR)...................................26 3.4.4輻射場型(Radiation Pattern)........................27 3.4.5天線增益(Gain).....................................28 3.5 改良式T型天線之設計.....................................29 第四章 天線模擬與實測結果分析.......................................33 4.1 天線模擬與製作介紹......................................33 4.2 使用相關儀器與設備......................................35 4.3 T型雙頻單極天線量測.....................................36 4.4改良式T型雙頻天線的模擬..................................38 4.4.1參數a、b的調整.....................................38 4.4.2參數w、s的調整.....................................42 4.4.3參數h的調整........................................45 4.4.4 θ角度改變的變化..................................47 4.4.5 接地面積大小的改變................................49 4.4.6 介質板厚度的影響..................................52 4.4.7各參數的整理.......................................55 4.5 T型天線的模擬與實測比較.................................56 4.6 T型與改良式T型天線的分析比較............................60 第五章 結論.........................................................64 參考文獻............................................................66

    [1] C. A. Balanis, Advanced Engineering Electromagnetics, Chap8,
    John, Wiley&Sons, New York, 1989.

    [2] John Wiley and Sons, Microwave Engineering,Chap1

    [3] C. A. Balanis, Antenna Theory, John Wiley&Sons ,New York,1997

    [4] http://tw.wifi-link.com/product.php?action=product&class1_id=1
    &class2_id=50&class3_id=164&product_id=16

    [5] John D.Kraus and Ronald J.Marhefka, Antenna for all Application,3rd
    edition

    [6] Jeun-Wen Wu,Hai-Ming Hsiao and Jui-Han Lu, “Dual-Broadband T-shaped Monopole Antenna for Wireless Communication, ”
    IEEE Trans on Antennas Propagat, Vol 1A, pp. 470 – 473, July. 2005

    [7] J.Y Jan and L.C. Tseng, “Small planar monopole antenna with a shorted Parasitic inverted-L wire for wireless communications in the 2.4,5.2 and 5.8GHz bands, ” IEEE Trans on Antennas Propagat., Vol. 52, No. 7,
    pp. 1903-1905, Jul. 2004.

    [8] Y.L Kuo and K.L Wong, “Printed double-T monopole antenna for 2.4/5.2 GHz dual-band WLAN operations, ” IEEE Trans on Antennas Propagat ,Vol. 51, No. 9, pp. 2187-2192, Sep. 2003.

    [9] H. D. Chen, J. S. Chen and Y. T. Cheng, “Modified inverted-L monopole antenna for 2.4/5.2 GHz dual-band operations, ” Electron Lett., Vol. 39, pp. 1567-1568, Oct. 2003.

    [10] M. Ali, M.Okoniewski, M. A. Stuchly, and S. S. Stuchly,
    “Dual-frequency strip-sleeve monopole for laptop computer, ”
    IEEE Trans. Antennas Propagat, Vol. 47, No.2, pp. 317-323, Feb. 1999.

    [11] S. B. Chen, Y. C. Jiao and F. S. Zhang , “Modified T-shaped planar monopole antenna for WLAN Applications,” in Proc. Asia-Pacific
    Microw. Conf., Suzhou, China, Vol. 4, pp. 2714-2716, Dec. 2005

    [12] P. Ciais, R. Staraj, G. Kossiavas, and C. Luxey, “Compact internal multiband antenna for mobile phone and WLAN standards,” Electron Lett., Vol. 40, pp. 920-921, Jul. 2004.

    [13] Kin-Lu Wong, “Compact and Broadband Microstrip Antennas”, Chap4, John Wiley & Sons, Inc. 2002.

    [14] R. W. P. King, J. C. W. Harrison, and D. H. Denton, “Transmission -Line Missile Antennas,” IRE Transactions on Antennas and Propagation, Vol. 8, No. 1, pp. 88-90, 1960.

    [15] C. Soras, M. Karaboikis, G. Tsachtsiris, and V. Makios, “Analysis and design of an inverted-F antenna printed on a PCMCIA card for the 2.4GHz ISM band”, IEEE Antennas and Propagation Magazine, Vol. 44, No.1 , pp. 37-43, February. 2002.

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