Responsive image
博碩士論文 etd-0707103-213454 詳細資訊
Title page for etd-0707103-213454
論文名稱
Title
四波束切換式智慧型天線之研製
Design and implementation of the four-beam smart antennas based on butler matrix
系所名稱
Department
畢業學年期
Year, semester
語文別
Language
學位類別
Degree
頁數
Number of pages
51
研究生
Author
指導教授
Advisor
召集委員
Convenor
口試委員
Advisory Committee
口試日期
Date of Exam
2003-06-13
繳交日期
Date of Submission
2003-07-07
關鍵字
Keywords
智慧型天線、微帶天線陣列、巴特勒矩陣
Butler Matrix, Smart antenna, Microstrip Antenna Array
統計
Statistics
本論文已被瀏覽 5651 次,被下載 7901
The thesis/dissertation has been browsed 5651 times, has been downloaded 7901 times.
中文摘要
四波束切換式天線系統為智慧型天線的一種,其結構包含了陣列天線與波束形成器兩大部分,其原理是產生4個波束來覆蓋120度扇形區域,藉此來提高系統載波干擾比和系統的頻率複用率。

在陣列天線部分,我們使用具有製作容易、成本低、低姿勢等優點的 矩形微帶陣列天線,其元素間距為半波長。在波束形成器部分,吾人在論文中提出一種創新的四波束形成網路,此為一種具有低旁瓣位準的 巴特勒矩陣,其由 巴特勒矩陣與四個 相位差的不等功率分配器所組成。此種改良式的 巴特勒矩陣不但簡化了 巴特勒矩陣電路的複雜度,並且維持了 巴特勒矩陣的波束要求與精確的輸出位準和相位的電路優點。由量測結果可知,此種改良式的 巴特勒矩陣可使天線端的旁辦位準有效地降低至-10 dB以下,且四波束的正向角誤差均在 以內。經由數學推導證明,此種電路設計方式亦可延伸應用至 巴特勒矩陣。

Abstract
The switched-beam antenna is one type of the smart antennas, which consists of the antenna array and the beamforming network. The four-beam smart antenna generates four beams to cover a 120° area, which can be used to improve the carrier-to-interference ratio and the frequency reuse of a cellular system.

Due to the attractive features of microstrip antennas such as low profile, easy fabrication, and low cost, we use microstrip antennas as array elements. In this thesis, we propose a novel four-beam beamforming network which consists of a 4×4 Butler Matrix and four 180° power dividers. This network is able to provide low side-lobe level. A modified Butler Matrix not only simplifies the circuit of the 8×8 Butler Matrix, but also meet the requirement of the original Butler Matrix. From the result of measurement, the side-lobe level of each beam of the modified Butler Matrix is less than –10 dB. We also show that this method is applicable to any Butler matrix.

目次 Table of Contents
致謝 i
中文摘要 iii
英文摘要 iv
目錄 v
圖表目錄 vi
第一章 緒論 1
第二章 微帶天線分析與製作
2.1 微帶天線原理與特性 3
2.2 矩形微帶天線設計與分析 8
2.3 實際製作與量測結果 15
第三章 陣列天線理論與製作
3.1 陣列天線理論 18
3.2 低旁瓣陣列天線設計與分析 22
3.3 微帶陣列天線實作與量測 32
第四章 四波束切換式陣列天線設計與製作
4.1 巴特勒矩陣基本原理 35
4.2 巴特勒矩陣電路設計 42
4.3 四波束切換式陣列天線實作與量測 46
第五章 結論與未來研究方向 50
參考文獻 51
參考文獻 References
[1] W.C.Y. Lee, Mobile Cellular Telecommunication, 2nd ed., McGraw-Hill, 1995
[2] J.C. Liberti and T.S. Rappaport, Smart Antennas for Wireless Communications:
IS-95 and Third Generation CDMA Applications, Prentice Hall, 1999
[3] W.L Stutzman and G.A.Thiele, Antenna Theory and Design, John Wiley & Sons, 1998
[4] G. Y. Delisle, K. Hettak, “Smart antenna design with millimeter wave arrays,”
VTC 1999 - Fall. IEEE VTS 50th , Volume: 3 , Page(s): 1351 -1355 vol.3, 1999
[5] R.B.Ertel , Zhong Hu and J.H. Reed, “Antenna array hardware amplitudeand phase compensation using baseband antenna array outputs,” IEEE Vehicular Technology Conference, vol.3, pp.1759 –1763, 1999
[6] C.A. Balanis, Antennas Theory: Analysis & Design, 2nd ed., John Wiley &
Sons, 1997
[7] Bruno Pattan, Robust Modulation Methods and Smart Antennas in Wireless Communication, Prentice Hall, 2000
[8] D.M. Pozar, B. Kaufman, “Design considerations for low sidelobe microstrip arrays,” IEEE Transactions, vol.38, pp.1176-1185, 1990
[9] A. Angelucci, P. Audagnotto, P. Corda, P. Obino, F. Piarulli and B. Piovano,
“High performance microstrip networks for multibeam and reconfigurable operation
in mobile-radio systems,” IEEE Global Telecommunications Conference, vol.3,
pp.1717–1721, 1994
[10] R. Comitangelo, D. Minervini and B. Piovano,“ Beam forming networks of optimum size and compactness for multibeam antennas at 900 MHz ,” IEEE Antennas and Propagation Society International Symposium , vol.4,pp. 2127-2130,1997
[11] H.J.Moody, “The systematic design of the butler matrix,” IEEE Trans.¸AP-2¸
pp.786-788¸1964
[12] T.M. MacNamara, “Simplified design procedures for Butler matrices incorporating 90∘hybrids on 180∘hybrids,” IEE Proc. H, Microwaves, antennas & Propag., pp.50-54,1987
電子全文 Fulltext
本電子全文僅授權使用者為學術研究之目的,進行個人非營利性質之檢索、閱讀、列印。請遵守中華民國著作權法之相關規定,切勿任意重製、散佈、改作、轉貼、播送,以免觸法。
論文使用權限 Thesis access permission:校內校外完全公開 unrestricted
開放時間 Available:
校內 Campus: 已公開 available
校外 Off-campus: 已公開 available


紙本論文 Printed copies
紙本論文的公開資訊在102學年度以後相對較為完整。如果需要查詢101學年度以前的紙本論文公開資訊,請聯繫圖資處紙本論文服務櫃台。如有不便之處敬請見諒。
開放時間 available 已公開 available

QR Code