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研究生:張家豪
研究生(外文):Jia-HaoZhang
論文名稱:應用於Wi-Fi之可切換場型FPC偶極天線
論文名稱(外文):FPC Dipole with Pattern Reconfiguration for Wi-Fi Application
指導教授:李文熙
指導教授(外文):Wen-Hsi Lee
學位類別:碩士
校院名稱:國立成功大學
系所名稱:電機工程學系
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:2018
畢業學年度:106
語文別:中文
論文頁數:30
中文關鍵詞:八木天線場型重置反射器雙頻天線Wi-Fi天線
外文關鍵詞:Yagi-Uda antennaspattern reconfigurationreflectordual-bandWi-Fi antenna
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本論文一開始提出可切換場型的偶極天線,皆使用FPC製成。從介紹八木天線的原理,了解偶極天線與反射器之間的關係。然後研究如何在運用二極體當開關下,開啟時有反射器的反射效果,又能在關閉時反射器對天線影響降至最小,達成天線場型的切換,因此先從製作5GHz單頻偶極天線加上5GHz頻段反射器與二極體。接著製作2.4GHz、5GHz雙頻偶極天線,並設計雙頻反射器,實驗時發現並解決其饋入與直流路徑影響天線的問題,也成功實現了雙頻控制。再來因前兩個實驗主極化遠大於交叉極化,若天線安裝在實際環境中,易發生收訊到錯極化導致天線斷線,所以運用了FPC可撓的特性,將天線做成L型式,以增加交叉極化分量。最後,本論文天線直流線路及射頻線路都集中於一側出線,易於與電子產品相結合。
At the beginning of this thesis, a dipole antenna with pattern configuration, FPC structure antenna is proposed. From the introduction of the principle of the Yagi antenna, understand the relationship between the dipole antenna and the reflector. Then we studied how to use a diode as a switch. When the switch is turned on, there is a reflection effect of the reflector. And when the switch is turned off, the influence of the reflector on the antenna is minimized, and the antenna field type switching is achieved. Therefore, a single frequency of 5 GHz is generated first. Dipole antenna plus 5GHz band reflector and diode. Then the 2.4GHz and 5GHz dual-frequency dipole antenna was fabricated, and a dual-frequency reflector was designed. During the experiment, the problems of infeed and DC trace influence on the antenna were discovered and solved, and dual-frequency control was also successfully implemented. Since the main polarization of the first two experiments is much larger than the cross polarization, if the antenna is installed in the actual environment, the antenna is disconnected due to the occurrence of an error in the reception to the wrong polarization. Therefore, the flexibility of the FPC is used to make the antenna. Become large format to increase cross-polarization components. Finally, in this thesis, the antenna DC trace and RF trace are concentrated on one side of the outlet, which is easy to combine with electronic products.
摘要 I
FPC Dipole with Pattern Reconfiguration for Wi-Fi Application II
致謝 IV
目錄 V
圖目錄 VII
表目錄 VIII
第一章 緒論 1
1-1 研究動機與背景 1
1-2 文獻導覽 2
1-3 論文提要 2
第二章 八木‧宇田天線原理 4
2-1 概述 4
2-2 八木‧宇田天線原理說明 5
第三章 單頻段可切換場型之偶極天線 11
3-1 概述 11
3-2 單頻段可切換場型之偶極天線架構 12
3-3 單頻段可切換場型之偶極天線量測結果與討論 13
第四章 雙頻段可切換場型之偶極天線 16
4-1 雙頻段可切換場型之偶極天線架構 16
4-2 雙頻段可切換場型之偶極天線量測結果與討論 17
第五章 L型雙頻段可切換場型之偶極天線 23
5-1 L型雙頻段可切換場型之偶極天線架構 23
5-2 L型雙頻段可切換場型之偶極天線量測結果與討論 25
第六章 結論 29
參考文獻 30
[1]John Litva & Titus Kwok-Yeung Lo, “Digital Beamforming in Wireless Communications, Artech House, Norwood, MA, 1996.
[2]https://zh.wikipedia.org/wiki/MIMO
[3]H. Yagi, “Beam transmission of the ultra short waves, Proc. IRE, vol. 16, pp. 715–741, June. 1928.
[4]https://zh.wikipedia.org/wiki/%E5%85%AB%E6%9C%A8%E5%A4%A9%E7%BA%BF
[5]Baik, J. W., Pyo, S., Lee, T. H., & Kim, Y. S. (2009). Switchable printed Yagi-Uda antenna with pattern reconfiguration. ETRI journal, 31(3), 318-320.
[6]Nair, S. S., & Ammann, M. J. (2010). Reconfigurable antenna with elevation and azimuth beam switching. IEEE Antennas and Wireless Propagation Letters, 9, 367-370.
[7]Kang, W., Ko, K. H., & Kim, K. (2012). A compact beam reconfigurable antenna for symmetric beam switching. Progress In Electromagnetics Research, 129, 1-16.
[8]Ko, C. H., Tarn, I. Y., & Chung, S. J. (2013). A compact dual-band pattern diversity antenna by dual-band reconfigurable frequency-selective reflectors with a minimum number of switches. IEEE Transactions on Antennas and Propagation, 61(2), 646-65.
[9]黃獻鋒(2008),無線通訊時代的天線設計,臺北:全華圖書股份有限公司,pp.6-9~17。(譯自根日屋英之、小川真紀(2005))
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