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研究生:蔡佳翰
研究生(外文):Chia-Han Tsai
論文名稱:場型可重組之類八木貼片天線
論文名稱(外文):Pattern Reconfigurable Yagi-Like Patch Antenna
指導教授:林怡成
口試日期:2017-07-21
學位類別:碩士
校院名稱:國立臺灣大學
系所名稱:電信工程學研究所
學門:工程學門
學類:電資工程學類
論文種類:學術論文
論文出版年:2017
畢業學年度:105
語文別:中文
論文頁數:107
中文關鍵詞:傾斜波束天線正向波束天線可重組天線場型分集
外文關鍵詞:Beam tilt antennabroadside antennapattern diversityreconfigurable antenna with IC switch
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本論文主要探討一個具有五種場型分集可重組天線,應用於室內的無線區域網路傳輸裝置之設計,適用於WLAN IEEE 802.11ac的頻段。首先設計了兩種天線設計,第一種為類八木貼片天線(Yagi-like patch antenna)來產生傾斜波束分別打向四個象限;第二種為貼片(patch)天線產生出正上方的場型,由於考慮到天線會整合在一起,饋入方式使用探頭饋入(probe feed),能夠使得整合天線面積縮小,兩種天線的板材大小在設計上為 (80×80×2.4mm)^3)) ,使用2.4mm的FR4介質板(介電常數為4.3 )。此外為了減少天線整合後對匹配的影響,兩種天線調整匹配用的參數在設計時也盡量使其互相獨立。
兩種天線整合之後,利用射頻電路用的開關晶片結合饋入走線,使其達到單一端口可以切換四種不同方向的波束,而本論文將提出設計的過程及方法,天線的參數分析及模擬與量測的比較。
最後在實作與量測的部分,為了了解開關晶片對天線匹配、損耗、輻射特性的影響,本論文在實作上因應饋入方式的不同,提出兩種天線版本: 第一種使用分別以微帶線連接SMA接頭,分別激發每個埠,第二種是實裝開關電路。並運用USRP來驗證天線在無線通訊的機制
This thesis presents a reconfigurable antenna with pattern diversity for indoor WLAN IEEE 802.11ac applications. First, two kinds of antennas are proposed in this thesis. The first kind is the beam tilt antenna, which may generate tilt-beam patterns toward 4 directions in the horizontal plane. The other kind is the broadside microstrip antenna that may generate broadside patterns. In view of the compact design, both kinds of antennas are integrated into the same PCB module (80×80×2.4 〖mm〗^3). The PCB stacking consists of three layers, including the antenna patch layer, the ground layer, and the microstrip feeding layer. All antennas are fed with probe feeds and are extended to the SMA connectors for testing purpose. In addition, to realize the switched pattern function, we integrated IC switch in our antenna design and used IC switch to change the excited port. Additionally, we also investigated the impact of the employed switch on the antenna impedance matching, and then we introduced some parameters to fine tune the antenna performance. Finally, we built two prototypes (non-switch Antenna, switch Antenna), and use USRP verify our design in wireless communication
誌謝..................................................iii
中文摘要...............................................iv
Abstract...............................................v
目錄...................................................vi
圖目錄...............................................viii
表目錄.................................................xv
第一張 緒論..............................................1
1.1研究動機..............................................1
1.2無線通訊..............................................1
1.3 可重組天線介紹.......................................2
1.4 相關文獻.............................................3
1.5 天線構想.............................................4
1.6 論文架構.............................................4
第二章 場型分集可重組天線設計.............................5
2.1 前言................................................5
2.2 傾斜波束貼片天線設計與參數分析.........................6
2.3 寬頻正向輻射貼片天線設計與參數分析....................22
2.4 整合設計過程........................................41
2.5 總結...............................................53
第三章 射頻開關整合天線..................................54
3.1前言................................................54
3.2傳輸線整合天線架構 (PhaseI)..........................55
3.3 IC射頻開關整合天線架構 (Phase II)....................77
3.4總結................................................95
第四章 USRP量測驗證.....................................96
4.1 前言...............................................96
4.2 量測架設與量測參數說明...............................97
4.3量測結果............................................100
4.4總結...............................................103
第五章 結論............................................104
參考文獻...............................................106
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[2]W. Lin and H. Wong “Wideband Circular Polarization Reconfigurable Antenna”, IEEE Trans. Antennas Propagation, Vol. 63, No. 12, December 2015.
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[9]G. R. DeJean, M. M. Tentzeris, “A New High-Gain Microstrip Yagi Array Antenna with a High Front-to-Back(F/B) Ratio for WLAN and Millimeter-Wave Application”, IEEE Trans. Antennas Propagation, Vol. 55, No. 2, February 2007.
[10]D. Piazza, N. J. Kirsch, A. Forenza, R. W. Heath, Jr., and K. R. Dandekar, “Design and Evaluation of a Reconfigurable Antenna Array for MIMO System”, IEEE Trans. Antennas Propagation, Vol. 56, No. 3 March 2008.
[11]C. B. Dietrich, Jr. K. Dietze, J. R. Nealy, and W. L. Stutzman, “Spatial, Polarization, and Pattern Diversity for Wireless Handheld Terminals”, IEEE Trans. Antenna Propagation, Vol. 49, No.9, September 2001.
[12]D. M. Pozar, “Microwave Engineering”, Fourth edition, WILEY, 2011
[13]Datasheet of SKY13575-639LF, SP4T switch.
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[15]M. S. Alam, Y. Yang, A. M. Abbosh, “Reconfigurable Antenna with Parasitic Layer Containing 8-element Dipole Array”, International Symposium on Antenna and Propagation (ISAP), 2015 International Symposium, pp. 1-3, 2015
[16][LabVIEW communication 2.0] National Instrument, [Online]. Available: http://www.ni.com
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