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研究生:陳亭皓
研究生(外文):Ting-Hao Chen
論文名稱:可應用在3G和4G頻段且具金屬背蓋之平面天線
論文名稱(外文):Planar Antenna with Metallic Back Cover for 3G and 4G Bands
指導教授:鄭瑞清
口試委員:丘增杰鄧聖明金國生
學位類別:碩士
校院名稱:國立臺北科技大學
系所名稱:電子工程系研究所
學門:工程學門
學類:電資工程學類
論文種類:學術論文
畢業學年度:104
中文關鍵詞:金屬背蓋、寄生元件、屏蔽效應、MIMO天線
外文關鍵詞:Metallic BackParasitic ElementShielding EffectMIMO Antennas
相關次數:
  • 被引用被引用:1
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本論文提出可應用在現今具有金屬背蓋的3G和4G手機上的平面天線。天線的架構為三支路倒L型天線,置於浮接之金屬背蓋的背面,將之視為天線的寄生元件,以避免金屬平面之屏蔽效應。然後利用第一段提出的天線,複製於電路板的另一端,探討多輸入多輸出(Multi-Input Multi-Output, MIMO)天線之隔離度和相關係數,最後完成可操作於下列頻段之天線:LTE 700、GSM 850、GSM 900、LTE 1500、LTE 1700、GSM 1800、GMS 1900、UMTS和LTE 2500。
In this thesis, a planar antenna suitable for today’s 3G and 4G cellular phones with a metallic back cover is proposed. An inverted-L antenna with three branches is adopted as the structure of the antenna which is located behind a floating metallic back cover. This back cover is treated as a parasitic element of the antenna to avoid the shielding effect caused by metallic planes. Then, this antenna is duplicated on the other end of the circuit board to investigate the isolation and correlation coefficient of a MIMO antenna. Finally, an antenna that can operate in the following frequency bands is successfully implemented: LTE 700, GSM 850, GSM 900, LTE 1500, LTE 1700, GSM 1800, GMS 1900, UMTS and LTE 2500.
中文摘要 i
英文摘要 ii
誌謝 iii
目錄 iv
表目錄 vi
圖目錄 vii
第一章  序論 1
1.1研究背景與動機 1
1.2研究方法 5
1.3論文大綱 6
第二章  以金屬背蓋為寄生元件之手機多頻平面天線 7
2.1 設計目標 7
2.2 設計方法 8
2.2.1 單極天線 9
2.2.2 倒L型天線 10
2.3 外觀結構尺寸 11
2.4 天線設計流程 12
2.4.1 單支路輻射金屬片 12
2.4.2 雙支路輻射金屬片 17
2.4.3 三支路輻射金屬片 21
2.5 模擬和量測結果 27
第三章  以金屬背蓋為寄生元件之手機多頻平面MIMO天線 40
3.1 設計目標 40
3.2 設計方法 41
3.3 外觀結構尺寸 42
3.4 天線設計流程 43
3.5 模擬和量測結果 44
3.6 使用開槽線段改善隔離度 57
3.7 討論 64
3.7.1 比較via的數量 64
3.7.2 比較RF choke的大小 65
3.7.3 比較分割線的寬度 67
3.7.4 寄生金屬背蓋尺寸之影響 68
第四章  結論 77
參考文獻 78
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6.A. Sibille, C. Oestges and A. Zanella, MIMO: From Theory to Implementation, Academic Press, 2010.
7.Brennan, D. G., “Linear Diversity Combining Techniques,” Proceedings of the IRE, vol.47, no.6, pp. 1075-1102, Jun. 1959.
8.W. Wang, C.Y. Wei and W.C. Wei, “The MIMO antenna design for a TD-LTE mobile phone,” Antennas & Propagation (ISAP), 2013 Proceedings of the International Symposium on, vol. 02, Oct. 2013, pp. 1311-1313.
9.ByungChul Kim, Minkil Park, SunHyung Kim and Teaho Son, “Design of the Twelve-bands MIMO Antenna for the Metal Cover Mobile Phone,” International Journal of Control and Automation, vol. 9, no. 2(2016), pp. 211-218.
10.C. Y. Chiu, C. H. Cheng, R. D. Murch, and C. R. Rowell, “Reduction of mutual coupling between closely-packed antenna elements,” IEEE Trans. Antennas Propag., vol. 55, no. 6, pp. 1732-1738, Jun. 2007.
11.T. Kokkinos, E. Liakou, and A. P. Feresidis, “Decoupling antenna elements of PIFA arrays on handheld devices,” Electron Lett., vol. 44, no. 25, pp. 1442-1444, Dec. 2008.
12.D. Guha, S. Biswas, T. Joseph, and M. T. Sebastian, “Defected ground structure to reduce mutual coupling between cylindrical dielectric resonator antennas,” Elect. Lett., vol. 44, no. 14, pp. 836-837, Jul. 2008.
13.Y. Gao, X. Chen, Z. Ying, and C. Parini, “Design and performance investigation of a dual-element PIFA array at 2.5 GHz for MIMO terminal,” IEEE Trans. Antennas Propag., vol. 55, no. 12, pp. 3433-3441, Dec. 2007.
14.A. Diallo, C. Luxey, P. Le Thuc, R. Staraj, and G. Kossiavas, “Study and reduction of the mutual coupling between two mobile phone PIFAs operating in the DCS1800 and UMTS bands,” IEEE Trans. Antennas Propag., vol. 54, no. 11, pp.3063-3074, Nov. 2006.
15.A. Diallo, C. Luxey, P. Le Thuc, R. Staraj, and G. Kossiavas, “Enhanced two antenna structures for universal mobile telecommunications system diversity terminals,” IET Proc. Microw. Antennas Propag., vol. 2, no. 1, pp. 93-101, Feb. 2008.
16.C. Diallo, A. Luxey, R. Le Thuc, P. Staraj, and G. Kossiavas, “Diversity performance of multiantenna systems for UMTS cellular phones in different propagation environments,” Int. J. Antennas Propag., 2008.
17.B. K. Lau and J. B. Andersen, “Unleashing multiple antenna systems in compact terminal devices,” International Workshop Antenna Technology (IWAT), Santa Monica, CA, USA, Mar. 2009.

18.方麒榮,應用於LTE MIMO行動裝置天線之實現,碩士論文,國立中山大學電機工程學系,高雄,2014。
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