研究生: |
黃冠程 Kuan-chen huang |
---|---|
論文名稱: |
802.11a/b/g小型雙頻單極微帶天線設計與研究 Research and Design of 802.11a/b/g Small-Sized Dual-band Monopole Microstrip Antenna |
指導教授: |
王秀仁
Show-Ran Wang |
口試委員: |
瞿大雄
none 徐敬文 none |
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: | 2005 |
畢業學年度: | 93 |
語文別: | 英文 |
論文頁數: | 62 |
中文關鍵詞: | 摺疊單極微帶天線 、雙頻微帶天線 、操作頻率 、無線區域網路 、共振頻率 、阻抗頻寬 、天線增益 、輻射場型 |
外文關鍵詞: | folded monopole microstrip antenna, dual-band microstrip antenna, operation frequency, radiation pattern, antenna gain, impedance bandwidth, WLAN, resonant frequency |
相關次數: | 點閱:448 下載:1 |
分享至: |
查詢本校圖書館目錄 查詢臺灣博碩士論文知識加值系統 勘誤回報 |
在本篇論文中,我們提出一種應用在802.11a/b/g無線區域網路的新式摺疊單極微帶天線。使用一些小型化雙頻微帶天線的設計技術並透過電磁模擬軟體與實作來檢驗。以單極微帶天線為基礎來呈現設計,研究天線的操作頻率以及可以使用之頻寬,並能應用在無線區域網路,符合IEEE 802.11a/b/g(2.4GHz / 5.0GHz)的要求。其中802.11a必需要有700Mhz(5150Mhz~5825Mhz)頻寬。依照理論計算先找出符合共振頻率的長度,再以電磁模擬軟體IE3D反覆驗證以得到最佳化的設計。再以FR4微波基板作出實際的天線,量測出阻抗頻寬、輻射場型與天線增益,並與軟體模擬的結果做比較。實作的結果確實能在802.11a/b/g全頻段無線區域網路的環境下使用。
In this thesis, we proposed a novel structure of folded monopole microstrip antenna for 802.11a/b/g WLAN applications. Several designs and researches for small-size dual-band microstrip antenna are examined through simulation and experiment. Designs are based on a monopole microstrip patch antennas to study the operation frequency and bandwidth to satisfy the requirements of IEEE 802.11a/b/g WLAN(Wireless Local Area Network)standard(2.4GHz / 5.0GHz), the bandwidth of at least 700MHz required in 802.11a. The optimized design is obtained and verified by electromagnetic simulation software IE3D repeatedly after finding a theoretically computational resonant length required. Impedance bandwidth, radiation patterns and gain variation measured by the implemented 802.11a/b/g dual-band monopole microstrip antenna on FR4 substrate, are compared with the results of simulation. The implementation satisfies the 802.11a/b/g specifications for WLAN application.
[1] M. Ali, M. Okoniewski, M.A. Stuchly and S.S. Stuchly, “A Dual-
Frequency Strip-Sleeve Monopole Antenna for a Laptop computer,” in
IEEE AP-S Int. Symp., Digest, pp. 794-797,1998.
[2] Y-L. Kuo and K. L. Wong, “Print Double-T Monopole Antenna for
2.4/5.2 GHz Dual-Band WLAN Operations,” IEEE Trans. Antennas
Propagation, Vol. 51, pp. 2187-2192, Sept. 2003.
[3] 顏春煌, “802.11 無線區域網路理論與實務”.旗標出版社,pp2-10
~2-11, 中華民國九十三年十一月
[4]Jochen Schiller,“Mobile Communications,”2nd edition, pp.210-211
[5]John D. Kraus, Ronald J. Marhefka,“Antenna for all applications”3rd edition, McGraw Hill
[6]D.M. Pozar, Microwave Engineering, 2nd ed., John Wiley, New York, Ch.6, 2003
[7]Tsukiji Y. Kumon, and M. Yamasaki,“Double-Folded Monopole
Antenna Using Parallel or Coaxial Cable”, IEE Proc-Microw, Antenna and Propagation, Vol 149, pp17-18, Feb 2002
[8]H. Choo, R. roger, and H. Ling, “Design of Electrically Wire
Antenna Using Genetic Algorithm Taking into Consideration of
Bandwidth and Efficiency”
[10] K.P. Ray, P. V. Anob, KapurR, and G. Kumar., ”Broadban Planar Rectangular Monopole Antennas,” Microwave Optical Tech, Letters, Vol. 28, pp. 55-59, 2001.