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論文名稱 Title |
平板電腦無線區域網路天線之人體電波能量吸收研究 Body SAR Study of the WLAN Antennas for Tablet PC Application |
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系所名稱 Department |
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畢業學年期 Year, semester |
語文別 Language |
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學位類別 Degree |
頁數 Number of pages |
62 |
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研究生 Author |
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指導教授 Advisor |
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召集委員 Convenor |
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口試委員 Advisory Committee |
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口試日期 Date of Exam |
2011-05-28 |
繳交日期 Date of Submission |
2011-06-17 |
關鍵字 Keywords |
單極槽孔天線、短路單極天線、單極天線、人體特定吸收比率、無線區域網路天線、平板電腦天線、行動通訊裝置、迴圈天線 Monopole slot antenna, Shorted monopole antenna, Loop antenna, Tablet computer antennas, Monopole antenna, Specific absorption rate, Mobile antennas, Body SAR, WLAN antennas |
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統計 Statistics |
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中文摘要 |
為了瞭解不同操作機制之天線與其造成人體所吸收的電波能量之關聯性,本論文提出一系列操作於WLAN頻帶的平板電腦天線設計,分別是耦合饋入短路單極天線、耦合饋入迴圈天線、寬頻短路單極天線以及單極槽孔天線,並且對前述天線進行body SAR的模擬測試,分析在使用者以不同方式操作平板電腦時平板電腦天線的SAR值表現,比較不同操作機制之天線的SAR值表現。同時也分析在相同配置下改變天線與測試模型之間的距離時,天線SAR值的變化,找出天線與測試模型間所需要的最小距離以通過SAR規範。結果顯示耦合饋入迴圈天線具有較低的body SAR值,詳細的數據與分析在本論文中說明。最後並比較平面結構的天線與具有彎折的立體結構的天線兩者SAR值表現的差異。 |
Abstract |
In this thesis, a comparison of the body SAR value of five planar WLAN antennas including two coupled-fed shorted monopole antennas, a coupled-fed loop antenna, a monopole antenna, and a monopole slot antenna for tablet PC applications are presented. A required minimum distance between the antenna and the testing flat phantom to meet the 1-g body SAR requirement of 1.6 W/kg has been determined. Results show that the body SAR results of the coupled-fed loop antenna are lowest among the five tested antennas. Detailed results and discussion are presented in this thesis. Also, a comparison of the body SAR value of a planar antenna and an antenna with 3-D bent structure are presented. |
目次 Table of Contents |
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 應用於平板電腦的無線區域網路天線設計(WLAN Antennas for Tablet PC Application)................................................................................................4 2.1 平板電腦中天線的配置方式.........................................................................4 2.2 天線設計結構及原理.....................................................................................5 2.3 心得與討論...................................................................................................14 第三章平板電腦WLAN天線設計之人體電波能量吸收研究(Study of the Body SAR of WLAN Antennas for Tablet PC).......................................................15 3.1 Body SAR測試方式介紹及參數設定........................................................15 3.2 Body SAR測試模型配置方式....................................................................16 3.3 Body SAR模擬結果及分析........................................................................19 3.4 減少天線與測試模型間距之於SAR值變化.............................................31 3.5 心得與討論...................................................................................................35 第四章 具有彎折立體結構之天線的Body SAR分析(Analysis of the Body SAR of Antennas with 3-D Bent Structure)................................................................37 4.1 具有彎折立體結構之天線設計...................................................................37 4.2 Body SAR模擬結果及分析........................................................................40 4.3 心得與討論...................................................................................................44 第五章 結論 (Conclusions) .......................................................................................45 參考文獻 (References) ...............................................................................................47 論文著作表 (Publication List) ...................................................................................51 |
參考文獻 References |
參 考 文 獻 (References) [1] http://www.isuppli.com/Display-Materials-and-Systems/MarketWatch/Pages/Tablet-Shipments-to-Rise-to-242-3-Million-Units-by-2015.aspx, iSuppli. [2] International Commission on Non-Ionizing Radiation Protection (ICNIRP), “Guidelines for limiting exposure to time-varying electric, magnetic, and electromagnetic fields (up to 300 GHz),” Health Phys., vol. 74, pp. 494-522, Apr. 1998. [3] American National Standards Institute (ANSI), “Safety levels with respect to human exposure to radio-frequency electromagnetic field, 3 kHz to 300 GHz,” ANSI/IEEE standard C95.1, Apr. 1999. [4] Federal Communications Commission, Office of Engineering and Technology, Mobile and Portable Device RF Exposure Equipment Authorization Procedures, OET/Lab Knowledge Database publication number 447498 item 7, Dec. 13, 2007. [5] IEC 62209-1, Human exposure to radio frequency fields from hand-held and body-mounted wireless communication devices – Human models, instrumentation, and procedures – Part 1: Procedure to determine the specific absorption rate (SAR) for hand-held devices used in close proximity to the ear (frequency range of 300 MHz to 3 GHz), Feb. 2005. [6] K. L. Wong and W. J. Chen, “Small-size microstrip-coupled printed PIFA for 2.4/5.2/5.8 GHz WLAN operation in the laptop computer,” Microwave Opt. Technol. Lett., Vol. 51, pp. 2072-2076, Sep. 2009. [7] T. W. Kang and K. L. Wong, “Very-small-size printed monopole with embedded chip inductor for 2.4/5.2/5.8 GHz WLAN laptop computer antenna,” Microwave Opt. Technol. Lett., Vol. 51, pp. 171-177, Jan. 2010 48 [8] S. J. Liao, K. L. Wong and L. C. Chou, “Small-size uniplanar coupled-fed PIFA for 2.4/5.2/5.8 GHz WLAN operation in the laptop computer,” Microwave Opt. Technol. Lett., Vol. 51, pp. 1023-1028, Apr. 2009. [9] 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. [10] W. Y. Chen and K. L. Wong, “Small-size coupled-fed shorted T-monopole for internal WWAN antenna in the slim mobile phone,” Microwave Opt. Technol. Lett., Vol. 52, pp. 257-262, Feb. 2010. [11] K. L. Wong and F. H. Chu, “Internal planar WWAN laptop computer antenna using monopole slot elements,” Microwave Opt. Technol. Lett., Vol. 51, pp. 1274-1279, May 2009. [12] 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. [13] F. H. Chu and K. L. Wong, “Simple planar printed strip monopole with a closely-coupled parasitic shorted strip for eight-band LTE/GSM/UMTS mobile phone,” IEEE Trans. Antennas Propagat., Vol. 58, pp. 3426-3431, Oct. 2010. [14] K. L. Wong and C. T. Lee, “Wideband surface-mount chip antenna for eight-band LTE/WWAN slim mobile phone application,” Microwave Opt. Technol. Lett., Vol. 52, pp. 2554-2560, Nov. 2010. [15] S. C. Chen and K. L. Wong, “Small-size 11-band LTE/WWAN/WLAN internal mobile phone antenna,” Microwave Opt. Technol. Lett., Vol. 52, pp. 2603-2608, Nov. 2010. [16] K. L. Wong and C. H. Huang, “Compact multiband PIFA with a coupling feed for internal mobile phone antenna,” Microwave Opt. Technol. Lett., vol. 50, pp. 2487-2491, Oct. 2008. 49 [17] K. L. Wong and C. H. Huang, “Printed PIFA with a coplanar coupling feed for penta-band operation in the mobile phone,” Microwave Opt. Technol. Lett., vol. 50, pp. 3181-3186, Dec. 2008. [18] C. H. Chang and K. L. Wong, “Printed λ/8-PIFA for penta-band WWAN operation in the mobile phone,” IEEE Trans. Antennas Propagat., vol. 57, pp. 1373-1381, May 2009. [19] C. T. Lee and K. L. Wong, “Uniplanar coupled-fed printed PIFA for WWAN/WLAN operation in the mobile phone,” Microwave Opt. Technol. Lett., vol. 51, pp. 1250-1257, May 2009. [20] C. H. Wu and K. L. Wong, “Printed compact S-shaped monopole antenna with a perpendicular feed for penta-band mobile phone application,” Microwave Opt. Technol. Lett, vol. 49, pp. 3172-3177, Dec. 2007. [21] C. H. Chang and K. L. Wong, “Small-size printed monopole with a printed distributed inductor for penta-band WWAN mobile phone application,” Microwave Opt. Technol. Lett., Vol. 51, pp. 2903-2908, Dec. 2009. [22] K. L. Wong and S. C. Chen, “Printed single-strip monopole using a chip inductor for penta-band WWAN operation in the mobile phone,” IEEE Trans. Antennas Propagat., Vol. 58, pp. 1011-1014, Mar. 2010. [23] C. I. Lin and K. L. Wong, “Internal multiband loop antenna for GSM/DCS/PCS/UMTS operation in the small-size mobile phone,” Microwave Opt. Technol. Lett., vol. 50, pp. 1279-1285, May 2008. [24] Y. W. Chi and K. L. Wong, “Half-wavelength loop strip fed by a printed monopole for penta-band mobile phone antenna,” Microwave Opt. Technol. Lett., vol. 50, pp. 2549-2554, Oct. 2008. [25] K. D. Katsibas, C. A. Balanis, P. A. Tirkas and C. R. Birtcher, “Folded loop antenna for mobile hand-held units,” IEEE Trans. Antennas Propagat., vol. 46, pp. 260-266, Feb. 1998. 50 [26] Y. W. Chi and K. L. Wong, “Internal compact dual-band printed loop antenna for mobile phone application,” IEEE Trans. Antennas Propagat., vol. 55, pp. 1457-1462, May 2007. [27] C. I. Lin and K. L. Wong, “Printed monopole slot antenna for internal multiband mobile phone antenna,” IEEE Trans. Antennas Propagat., vol. 55, pp. 3690-3697, Dec. 2007. [28] K. L. Wong and L. C. Lee, “Multiband printed monopole slot antenna for WWAN operation in the laptop computer,” IEEE Trans. Antennas Propagat., vol. 57, pp. 324-330, Feb. 2009. [29] K. L. Wong, Y. W. Chi and S. Y. Tu, “Internal multiband printed folded slot antenna for mobile phone application,” Microwave Opt. Technol. Lett., vol. 49, pp. 1833-1837, Aug. 2007. [30] C. H. Wu and K. L. Wong, “Hexa-band internal printed slot antenna for mobile phone application [31] http://www.semcad.com, SEMCAD, Schmid & Partner Engineering AG (SPEAG). ,” Microwave Opt. Technol. Lett., vol. 50, pp. 35-38, Jan. 2008. [32] http://www.satimo.com/content/products/flat-phantom, SATIMO-Flat Phantoms. [33] http://www.fcc.gov/, Federal Communications Commission. [34] K. L. Wong and C. T. Lee, “Small-size wideband monopole antenna closely coupled with a chip-inductor-loaded shorted strip for 11-band WWAN/WLAN/WiMAX operation in the slim mobile phone,” Microwave Opt. Technol. Lett., Vol. 53, pp. 361-366, Feb. 2011. [35] K. L. Wong, W. Y. Chen, C. Y. Wu and W. Y. Li, “Small-size internal eight-band LTE/WWAN mobile phone antenna with internal distributed LC matching circuit,” Microwave Opt. Technol. Lett., Vol. 52, pp. 2244-2250, Oct. 2010. |
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