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論文名稱 Title |
應用於WiMAX 系統之四區段開關天線 A Four-Sector Switchable WiMAX Antenna |
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系所名稱 Department |
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畢業學年期 Year, semester |
語文別 Language |
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學位類別 Degree |
頁數 Number of pages |
59 |
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研究生 Author |
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指導教授 Advisor |
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召集委員 Convenor |
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口試委員 Advisory Committee |
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口試日期 Date of Exam |
2008-01-16 |
繳交日期 Date of Submission |
2008-01-22 |
關鍵字 Keywords |
全球互通微波存取、微帶天線陣列、四區段切換式開關天線 Worldwide Interoperability for Microwave Access, Microstrip Antenna Array, Four-Sector Switchable Antenna |
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統計 Statistics |
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中文摘要 |
本論文在設計使用於4.9-5.0 GHz頻帶之戶內WiMAX四區段開關天線,此天線之原型設計是用來提供較高的增益於一指定區段。此外,天線的輻射波束利用電子控制操作於四個區段,每一個區段包含二個矩形微帶天線之陣列,並將微帶天線基板背面與接地面之間的空氣間距增高為3 mm,來達成高增益且寬頻的設計目標,然後利用一微波開關IC來選擇四個區段之一。 |
Abstract |
A four-sector switchable WiMAX antenna, for indoor use in the 4.9 -5.0 GHz frequency bands, is presented. The prototype antenna is designed to provide a higher gain in a specified sector region. Furthermore, the radiation beam is electronically steerable to provide space diversity in four different sectors. Each sector of this antenna includes an array of two rectangular microstrip patches. The air gap between the bottom substrate of microstrip patches and the ground plane is increased to 3 mm, which can aid in accomplishing a high-gain and wideband design goal. A solid-state microwave switch is used to select one of the four sectors. |
目次 Table of Contents |
第一章 緒論................................................... 1 第二章 微帶天線與陣列天線分析與製作........................... 3 2.1 微帶天線一般基本特性................................ 3 2.2 基本理論分析........................................ 8 2.3 考慮微帶線饋入之空腔模式理論........................ 11 2.4 矩形微帶天線設計與分析.............................. 13 2.5 陣列天線理論........................................ 17 2.6 1×2 微帶天線陣列實作與量測........................... 22 第三章 四區段切換式開關天線設計與製作.....................32 3.1 四區段切換式開關電路................................ 32 3.2 四區段切換式開關實際量測結果........................ 37 3.3 四區段切換式開關天線實作與量測...................... 42 第四章 結論................................................... 48 參考文獻 ....................................................... 49 |
參考文獻 References |
[1] IEEE 802.16 LAN/MAN Broadband Wireless LANS (standards.ieee.org/getieee802/802.16.html). [2] WiMAX Forum (http://www.wimaxforum.org/home/). [3] Smart Antenna Engineering.TEAM LinGArtech House Mobile Communications Series [4] Deschamps,G.A.,”Microstrip Microwave Antenna,”3rd USAF Symposium on Antenna [5] HANDBOOK OF ANTENNAS IN WIRELESS COMMUNICATIONS,LAL CHAND GODARA CRC, Press Boca Raton London New York Washington, D.C. [6] D. M. Pozar, "A microstrip antenna aperture coupled to a microstrip line,"Electron. Lett., vol. 21, pp. 49-50, Jan. 17, 1985. [7] Electromagnetic Waves and Antennas Sophocles J. Orfanidis Rutgers University [8] M. L. Oberhart, Y. T. Lo, and R. Q. H. Lee, "New simple feed network for an array module of four microstrip elements," Electron. Lett., vol. 23, pp. 436-437,April 23, 1987. [9] EM Wave & Antenna Lab.National Sun Yat-Sen University [10] P. Bhartia, K. V. S. Rao, and R. S. Yomar, Millimeter-wave Microstrip and Printed Circuit Antennas, p. 104. Norwood, MA: Artech House, 1991. [11] D. R. Jackson and N. G. Alexopoulos, "Simple approximate formulas for input resistance, bandwidth, and efficiency of a resonant rectangular patch,"IEEE Trans. Antennas Propagat., vol. 39, pp. 407-410, March 1991 [12] Y. T. Lo, D. Solomon, and W. F. Richards, "Theory and experiment on microstrip antennas," IEEE Trans. Antennas Propagat., vol. 27, pp. 137-145, March 1979. [13] IEEE Electromagnetic Wave Series - Handbook of Microstrip Antennas ,James, Hall [14] Microstrip Antenna Design Handbook ,Ramesh Garg,Prakash Bhartia,Inder Bahl,Apisak Ittipiboon. Artech House [15] W. F. Richards, Y. T. Lo, and D. D. Harrison, "An improved theory for microstrip antennas and applications," IEEE Trans. Antennas Propagat., vol. 29, pp. 38-46,Jan. 1981. [16] T. Huynh, K. F. Lee, and R. Q. Lee, "Crosspolarization characteristics of rectangular patch antennas," Electron. Lett., vol. 24, pp. 463-464, April 14, 1988. [17] C.A. Balanis, Antennas Theory: Analysis & Design, 2nd ed., John Wiley & Sons, 1997 [18] DAHELE, J. S., LEE, K. F., and HO, K. Y.'Mode characteristics of annular-ring and circular disc microstrip antennas with and without airgaps'. IEEE AP-S Int. Sym. Digest, 1983,pp. 55-58 [19] W.L Stutzman and G.A.Thiele, Antenna Theory and Design, John Wiley & Sons,1998 [20] Design of Nonplanar Microstrip Antennas and Transmission Lines”Kin-Lu Wong [21] N. Herscovici, "A wide-band single-layer patch antenna," IEEE Trans. Antennas Propagat., vol. 46, pp. 471-473, April 1998. [22] E. Leevine, G. Malamud, S. Shtrikman and D. Treves, "A study of microstrip antennas with the feed network," IEEE Trans. Antennas Propagat., vol. 37, pp.426-434, April 1989. [23] National Kaohsiung Marine University.Antenna & Microwave Engineering Laboratory [24] D. M. Pozar, "A microstrip antenna aperture coupled to a microstrip line,"Electron. Lett., vol. 21, pp. 49-50, Jan. 17, 1985. [25] Hexawave IC:HWS451 http://www.hw.com.tw/PDF/Switch/HWS451_V1.pdf [26] Philips Semiconductors Ic 74HC238 http://www.nxp.com/#/pip/pip=[pip=74HC_HCT238_3]|pp=[v=d,t=pip, i=74HC_HCT238_3,fi=29345,ps=0][0] [27] CONFORMAL ARRAY ANTENNA THEORY AND DESIGN .Lars Josefsson & Patrik Persson |
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