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博碩士論文 etd-0614112-112524 詳細資訊
Title page for etd-0614112-112524
論文名稱
Title
高隔離度之筆記型電腦LTE MIMO天線設計
LTE MIMO Antenna with High Isolation for Laptop Computer
系所名稱
Department
畢業學年期
Year, semester
語文別
Language
學位類別
Degree
頁數
Number of pages
60
研究生
Author
指導教授
Advisor
召集委員
Convenor
口試委員
Advisory Committee
口試日期
Date of Exam
2012-06-02
繳交日期
Date of Submission
2012-06-14
關鍵字
Keywords
隔離度改善、多輸入多輸出天線、並接共振螺旋線段、筆記型電腦天線、LTE天線、平面化天線
LTE antennas, printed antennas, internal laptop computer antennas, isolation improvement, MIMO antennas, parallel-resonant spiral strip
統計
Statistics
本論文已被瀏覽 5743 次,被下載 955
The thesis/dissertation has been browsed 5743 times, has been downloaded 955 times.
中文摘要
本論文針對第四代行動通訊標準LTE之運用,首先提出一種利用並接共振螺旋線段以增加操作頻寬之筆記型電腦LTE天線設計,尺寸為45 x 9 mm2,具有平面化印刷之特色以更適用於薄型化筆記型電腦產品,並說明其相關操作機制,接著將此天線設計運用至MIMO天線之操作,針對其相關配置及重要參數對改善天線之隔離度進行討論;最後,不同於一般主要以手機接地面尺寸進行之研究,本論文針對筆記型電腦之上蓋之支撐導電板尺寸進行探討,且提出一種針對支撐導電板設計之隔離度改善方法,可有效改善LTE700頻帶之隔離度並且仍維持天線的良好輻射效率。
Abstract
For applications of wireless communication of the fourth generation (4G LTE), the technique of using a printed parallel-resonant spiral strip for bandwidth enhancement of a small-size planar laptop computer (especially the thin Ultrabook) antenna for the LTE operation is first presented. The antenna is printed on a thin FR4 substrate of small size 45 x 9 mm2 with a simple uniplanar structure which is promising for Ultrabook application. Based on the proposed antenna structure, its application for MIMO operation to achieve enhanced isolation is also analyzed in this thesis. Different from the works for the relatively much smaller ground plane conditions such as in the mobile phones, the effect of different size of the supporting conductive plate of the upper corner of the Ultrabook is discussed for the isolation issue of the MIMO antennas. Finally, the technique of isolation improvement in the LTE700 band for the MIMO operation in the Ultrabook is presented.
目次 Table of Contents
文字目錄 i
圖形目錄 iii

第一章 序論 (Introduction) 1
1.1 研究動機 1
1.2 文獻導覽 2
1.3 論文提要 3

第二章 運用並接共振螺旋線段之頻寬改善技術之LTE700/2300/2500平面筆記型電腦天線 (LTE700/2300/2500 Planar Laptop Computer Antenna Using Parallel-Resonant Spiral Strip for Bandwidth Enhancement) 4
2.1 利用並接共振螺旋線段增加頻寬之原理 4
2.2 參數分析 10
2.3 心得與討論 14

第三章 LTE700/2300/2500平面筆記型電腦MIMO天線 (LTE700/2300/2500 Planar Laptop Computer Antenna for MIMO Operation) 15
3.1 天線設計與技術原理 15
3.2 MIMO天線配置分析與討論 22
3.3 心得與討論 25
第四章 LTE MIMO筆記型電腦天線隔離度改善研究 (Isolation Improvement of LTE MIMO Laptop Computer Antenna) 26
4.1 筆記型電腦系統環境對於天線隔離度之探討 27
4.2 LTE MIMO筆記型電腦天線隔離度改善設計之操作原理 29
4.3 參數分析 37
4.4 心得與討論 41

第五章 結論 (Conclusions) 42

參考文獻 (References) 45

論文著作表 (Publication List) 49
參考文獻 References
[1] http://en.wikipedia.org/wiki/Ultrabook/, Wikipedia, the free encyclopedia.
[2] T. W. Kang and K. L. Wong, “Internal printed loop/monopole combo antenna for LTE/GSM/UMTS operation in the laptop computer,” Microwave Opt. Technol. Lett., vol. 52, pp. 1673-1678, Jul. 2010.
[3] K. L. Wong and W. J. Lin, “WWAN/LTE printed slot antenna for tablet computer application," Microwave Opt. Technol. Lett.,” Vol. 54, pp. 44-49, Jan. 2012.
[4] K. L. Wong, W. J. Chen, L. C. Chou and M. R. Hsu, “Bandwidth enhancement of the small-size internal laptop computer antenna using a parasitic open slot for the penta-band WWAN operation,” IEEE Trans. Antennas Propagat.,” vol. 58, pp. 3431-3435, Oct. 2010.
[5] K. L. Wong and L. C. Lee, “Bandwidth enhancement of small-size internal WWAN laptop computer antenna using a resonant open slot embedded in the ground plane," Microwave Opt. Technol. Lett.,” Vol. 52, pp. 1137-1142, May 2010.
[6] T. W. Kang and K. L. Wong, “Simple two-strip monopole with a parasitic shorted strip for internal eight-band LTE/WWAN laptop computer antenna,” Microwave Opt. Technol. Lett., vol. 53, pp. 706-712, Apr. 2011.
[7] K. L. Wong, W. J. Chen and T. W. Kang, “Small-size loop antenna with a parasitic shorted strip monopole for internal WWAN notebook computer antenna,” IEEE Trans. Antennas Propagat., vol. 59, pp. 1733-1738, May 2011.
[8] C. W. Chiu, Y. J. Chi and S. M. Deng, “An internal multiband antenna fro WLAN and WWAN applications,” Microwave Opt. Technol. Lett., vol. 51, pp. 1803-1807, Aug. 2009.
[9] K. L. Wong and P. J. Ma, “Coupled-fed loop antenna with branch radiators for internal LTE/WWAN laptop computer antenna,” Microwave Opt. Technol. Lett., Vol. 52, pp. 2662-2667, Dec. 2010.
[10] K. L. Wong, W. J. Wei and L. C. Chou, “WWAN/LTE printed loop antenna for tablet computer and its body SAR analysis,” Microwave Opt. Technol. Lett., Vol. 53, pp. 2912-2919, Dec. 2011.
[11] T. W. Kang and K. L. Wong, “Isolation improvement of 2.4/5.2/5.8 GHz WLAN internal laptop computer antennas using dual-band strip resonator as a wavetrap,” Microwave Opt. Technol. Lett., Vol. 51, pp. 58-64, Jan. 2010.
[12] M. Karaboikis, C. Soras, G. Tsachtsiris, and V. Makios, “Compact dual-printed inverted-F antenna diversity systems for portable wireless devices,” IEEE Antennas Wireless Propagat. Lett., Vol. 3, pp. 9-14, Dec. 2004.
[13] G. Park, M. Kim, T. Yang, J. Byun, and A. S. Kim, “The compact quad-band mobile handset antenna for the LTE700 MIMO application,” 2009 IEEE AP-S Int. Symp. Dig., Jun. 2009.
[14] A. Diallo, C. Luxey, P. Le Thuc, R. Staraj, G. Kossiavas, “Study and reduction of the mutual coupling between two mobile phone PIFAs operating in the DCS1800 and UMTS bands,” IEEE Trans. Antennas Propagat.,” vol. 54, pp. 3063-3074, Nov. 2006.
[15] S. W. Su, C. T. Lee, and F. S. Chang, “Printed MIMO-antenna system using neutralization-line technique for wireless USB-dongle applications,” IEEE Trans. Antennas Propagat.,” vol. 60, pp.456-463, Feb. 2012.
[16] R. A. Bhatti, S. Yi, and S. O. Park, “Compact antenna array with port decoupling for LTE-standardized mobile phones,” IEEE Antennas Wireless Propagat. Lett., Vol. 8, pp. 1430-1433, 2009.
[17] R. A. Bhatti, J. H. Choi, and S. O. Park, “Quad-band MIMO antenna array for portable wireless communications terminals,” IEEE Antennas Wireless Propagat. Lett., Vol. 8, pp. 129-132, 2009.
[18] Y. Gao, C.C. Chiau, X. Chen and C.G. Parini, “Modified PIFA and its array for MIMO terminals,” IEEE Proc.-Microw. Antennas Propag., Vol. 152, Aug. 2005.
[19] K. J. Kim and W. H. Ahn, “The high isolation dual-band inverted F antenna diversity system with the small N-section resonators on the ground plane,” Microwave Opt. Technol. Lett., vol. 49, pp. 731-734, Mar. 2007.
[20] K. L. Wong and T. J. Wu, “Small planar internal WWAN tablet computer antenna," Microwave Opt. Technol. Lett.,” Vol. 54, pp. 426-431, Feb. 2012.
[21] K. L. Wong, Y. W. Chang and S. C. Chen, “Bandwidth enhancement of small-size WWAN tablet computer antenna using a parallel-resonant spiral slit,” IEEE Trans. Antennas Propagat., Vol. 60, pp. 1705-1711, Apr. 2012.
[22] K. L. Wong, C. A. Lyu and L. C. Chou, “Small-size multiband planar antenna for LTE700/2300/2500 operation in the tablet computer,” Microwave Opt. Technol. Lett., Vol. 54, pp. 81-86, Jan. 2012.
[23] T. W. Kang, K. L. Wong, L. C. Chou and M. R. Hsu, “Coupled-fed shorted monopole with a radiating feed structure for eight-band LTE/WWAN operation in the laptop computer," IEEE Trans. Antennas Propagat.,” Vol. 59, pp. 674-679, Feb. 2011.
[24] http://www.ansys.com/products/hf/hfss/, ANSYS HFSS.
[25] P. Hallbjorner, “The significance of radiation efficiencies when using S-parameters to calculate the received signal correlation from two antennas,” IEEE Antennas Wireless Propagat. Lett., Vol. 4, pp. 97-99, 2005.
[26] S. Blanch, J. Romeu and I. Corbella, “Exact representation of antenna system diversity performance from input parameter description,” Electronic Lett., vol. 39, pp. 705-707, May 2003.
[27] H. T. Chattha and Y. Huang, “Low profile dual-feed planar inverted-F antenna for wireless LAN applications,” Microwave Opt. Technol. Lett., vol. 53, pp. 1382-1386, Jun. 2011.
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