臺灣博碩士論文加值系統

摘 要

　　隨著無線通訊科技的發展與進步，手持行動通訊系統已由語音通訊轉移至視訊通訊，同時對大量資料傳輸的需求，更進一步提升至具有連結網路功能的3G時代。因此通訊產品的輕巧、美觀與多功能已成為消費市場的趨勢。對於現行各國使用的行動通訊系統來說，其操作頻段，雖各有不同，然基地台的廣泛布建，幾已涵蓋每個區域。然而針對在城市大樓密集的環境下，仍會造成部份區域的電波訊號微弱或干擾等問題。因此使用較有效率的天線，來改善通訊品質是有其必要的，以現階段之技術來說，欲達到符合上述之天線，不外乎天線要具有較高的增益與操作於多頻帶。
基於前述理由，本論文計劃以印刷領結偶極陣列天線作為研究方向，將傳統的偶極(Dipole)天線做改變，以設計出具有多頻帶操作特性的平板單元天線。然後將多個印刷領結偶極單元天線組合成為具有較高增益的陣列天線。在設計過程中我們也會探討所提天線形式的操作頻率及有效之阻抗頻寬的相關變化性，最後利用加入一片金屬輻射面以提升此印刷領結偶極陣列天線的指向性，以滿足現存行動通訊系統的需求。
本文所提印刷領結偶極陣列天線，經由實作及量測結果，我們得到此陣列天線的阻抗頻寬已滿足並可使用於現行的多個無線行動通訊系統，例如GSM(860∼960M Hz )、DCS (1710∼1880MHz)、PCS (1850∼1990MHz)以及UMTS(1920∼2170MHz)、Wireless Lan ( 802.11a/b/g/n) 等等…多個無線行動通訊系統。
關 鍵 詞：多頻天線、偶極天線、陣列天線、領結偶極陣列天線。

Abstract

With development and progress of wireless communication science and technology, have held the communication system of action and has already been transferred from pronunciation communication to the video-information communication, to a large number of demand that materials transmit, raise to have, link 3G era in function such as network further at the same time. So the already becoming the trend of the consumer market with the multi-function light and handily, esthetically of communication products. To action communication system that the current various countries use, its frequency band of operation, although had nothing in common with each other, the extensive cloth in platform on the base was built, several has already contained each area. But direct it against the intensive environment of urban building, will still cause some electric wave signals of area to be faint or question of interfering with etc.. So use the more efficient antenna, it is that has its essential one that to improve communication quality, as to technology at the present stage, it accords with the antenna described above to want to reach, should have higher gain and operation in many frequency bands beyond the scope of the antenna.
Because of the aforesaid reason, this thesis is planned in order to print the dipole array antenna of the bow tie as studying the direction, the traditional dipole .The antenna changes, in order to design the dull and stereotyped unit antenna that many frequency bands operated the characteristic. Then print a lot of on the dipole unit antenna of the bow tie and make up and become and have the higher array antenna that gained. We will probe into the operation frequency of the antenna forms proposed and valid frequently wide relevant changes of impedance too in the course of designing, utilize it a metal radiation of joining in order to improve this pointing to which prints the dipole array antenna of bow tie finally, in order to meet communication system ofextant action's demands.
This text mentions and prints the dipole array antenna of the bow tie, via doing in fact and quantity examine the result, we get array this impedance of antenna frequently wide and already satisfied can make, use current a lot of wireless action communication system foring, such as GSM (860-960M Hz ),DCS (1710- 1880MHz),PCS (1850- 1990MHz) And UMTS (1920-2170MHz),Wireless Lan (802.11a/b/g/n)…a lot of wireless action communication system Antenna.
Keywords：Dipole ANTENNA、Array ANTENNA、Dipole Array ANTENNA、Bow-Tie ANTENNA、Bow-Tie Dipole Array ANTENNA。

目 錄

中文摘要 .……………………………………..……………….……….………….….i
英文摘要 .………………………………………….……………….……….….…......ii
誌謝 .………………………………………………….………………….….…...…...iii
目錄 .……………………………………………………...…………….……….…….iv
表目錄 .…………………………………………………………………...……..…..…v
圖目錄 ..……………………………………………………………….…..….……….vi
第一章 緒論 .……………………………….…………………………..….….……..1
1.1 研究動機與目的 .……………………………………...…….…..………...1
1.2 論文架構(內容提要) .……………………………………........….……..…2
第二章 天線基本理論 .……………………………………….………..…..…….…3
2.1 偶極天線 ……………………………………………………..….……..….3
2.2 印刷領結雙頻偶極天線……………………………..……….…..……..….9
2.2.1 印刷領結偶極天線設計……………………………….….…….…..9
2.2.2 印刷領結雙頻偶極天線結構………………………….…..………10
2.3 天線陣列……………………………….….……………………………… 21
2.3.1 線性陣列天線及平面陣列天線…………………….…….……… 21
2.3.2 陣列天線饋入方式及天線單元互偶影響…………….….……… 25
第三章 天線結構使用於Wireless Lan的設計應用………….…….……………..26
3.1 IEEE802.11無線網路通信標準簡介…………………….….…………..26
3.2　802.11a/b/g 雙頻印刷領結偶極陣列天線設計……………..………….29
3.3　802.11a/b/g天線實作及量測…………………………….…….………...36
3.4　802.11a/b/g雙頻印刷領結偶極陣列天線運用在MIMO系統的設計.....54
3.4.1 MIMO系統概述………………………………………….…..………54
3.4.2 MIMO 802.11a/b/g 天線模擬與實作及量測...……………..………57
第四章 天線結構使用於WCDMA UMTS系統的設計應用…………..………….70
4.1 WCDMA UMTS 系統簡介…………………………………….…………71
4.2 WCDMA UMTS雙頻印刷領結偶極陣列天線設計應用……….……....74
4.2.1 天線設計…………………………………………………..…….…74
4.3 天線模擬與實作及量測………………………………………….…….…82
第五章 結論………………………………………………………………….…….…..91
參考文獻 …………………………………………………………………….…….…..92

參考文獻

1.　A Sangiovanni, J.Y. Dauvignac, and c. Pichot ,” Embedded dielectric antenna for
bandwidth enhan- Cement,”Electronic Letter .,vol. 33, pp. 2090-2091,1997.
2.　Z.-F.Liu,P.-S.Kooi,L-W.Li,M.-S Leong ,and T.-S Yeo,”A method for designing
broad-band microstrip Antenna in multilayered planner structures,”IEEE Trans
Antenna Propagat.,vol. 47,pp.1416-1460,1999.
3.　B.L.Ooi, and C.L.Lee, “Broadband air-filled stacked U-slot antenna,” Electronic
Letter.,pp.174-177,1999.
4.　翁金輅、黃建欽(具有雙頻饋入網路的雙頻微帶陣列天線)，,”Dual-Frequency
Microstrip Arrays with a”
5.　Chih-Ming Su, Hong-Twu Chen and Kin-Lu Wong “Printing dual-band dipole antenna with u-soltted Arms 2.4/5.2Ghz WLAN operation” Electronic Letter 24th October 2002 vol.38 no.22
6.　Ravi Kumar Joshi, and Ayyangar Ranganath Harish ,”A Modified Bow-Tie Antenna for Dual Band Applications”IEEE Antenna and Wireless Propagatio Letters , vol. 6, 2007.
7.　Richard C. Compton , and Ross c. Mcphedran , Zorana Popovic , Gabriel M. Rebeiz , Peter P, Tong , and David B. Rutledge ,“ Bow-Tie Antenna on a Dielectric Helf-Space :Theory and Experiment “
8.　G.A. Evtioushkine,J.W. Kim and K.S.Han , “Very wideband printed dipole antenna array”
9.　Ying-Zeng , Jin-Ping Ma , Young-Jiu Zhao , Hui-Li Zheng , and Yu-Mei Guo “ Wideband Printed Dipole Antenna for Wireless LAN“
10.　卓聖鵬，行動通訊時代的天線技術，全華科技圖書股份有限公司，民83年。
11.　S. Deay, C. K. Aanandan, P. Mohanan, and K. G. Nair, “Analysis of cavity backed
printed dipoles,”Electron Lett., vol. 30, no. 30, pp. 173-174, 1994.
12.　Y-D Lin, and S-N Tsai, “Analysis and design of broadband-coupled striplines-fed bow-tie antennas,” IEEE Trans. Antennas and Propagat. vol. 46, no. 3, pp. 459-560, March 1998.
13.　G. Zheng, A. A. Kishk, A. B. Yakovlev, and A. W. Glisson, “A broad band printed bow-tie antennawith a simplified feed,” Antennas and PropagationSociety International Symposium, Vol. IV, pp. 4024-4027, Monterey, CA, June 2004.
14.　A. A. Eldek, A. Z. Elsherbeni, and C. E. Smith, “Characteristics of microstrip fed printed bow-tieantenna,” Microwave Opt. Tech. Lett., vol. 43, no. 2, pp. 123-126, Oct. 2004.
15.　白光弘，天線原理及應用，國立編譯館主編，明文書局印行，民83年。
16.　曹祥裕､高軍､曹越勝､楊芳，微波技術與天線，西安電子科技大學出版社， March 2008。
17.　羅德史瓦茲公司，MIMO系統的原理以及這些系統的標準化。
18.　根日屋英之、小川真紀，無線通訊時代的天線設計，全華科技圖書股份有限公司，民97年。
19.　L. G. Maloratsky, “Reviewing the basics of microstrip lines,” Microwave & RF. pp. 79-88, March 2000.