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論文名稱 Title |
圓極化陶瓷天線在非對稱接地面之設計 Design of Circularly Polarized Ceramic Antenna on an Asymmetric Ground Plane |
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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 |
38 |
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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 |
2004-05-29 |
繳交日期 Date of Submission |
2004-05-31 |
關鍵字 Keywords |
印刷式電路基板、全球衛星定位系統、圓極化陶瓷天線 PCB, CIRCULARLY POLARIZED CERAMIC ANTENNAS, GPS |
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統計 Statistics |
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中文摘要 |
本論文提出一種應用在GPS系統之圓極化陶瓷天線在非對稱接地面上設計。首先在非對稱接地面上置入一L形狹縫型槽孔,使之分離成兩個獨立接地面,也就是讓天線所屬之接地面為對稱的,接下來在極細同軸線上利用四分之一阻抗轉換方式來有效阻隔兩接地面之表面電流,使得天線在正常操作時其接地面上產生的表面電流能分佈均勻,在操作頻帶上產生一良好的圓極化輻射場型。 |
Abstract |
Design of the circularly polarized ceramic antenna, suitable for GPS system, on an asymmetric ground plane is presented in this thesis. Firstly, to obtain two isolated ground planes, we insert an L slit on an asymmetric ground plane, making the antenna with a symmetric ground plane. Then, we isolate the excited surface current between the two ground planes by using a quarter-wavelength mini-coaxial cable. The surface current can distribute uniformly on the ground plane when the proposed antenna is in operation, which makes possible a good circularly polarized radiation pattern in the operation band. |
目次 Table of Contents |
第一章 序論 (Introduction) ............................... 1 1.1 概述 ................................................. 1 1.2 文獻導覽 ..............................................1 1.3 論文內容 ..............................................2 第二章 圓極化陶瓷天線在對稱與非對稱接地面之分析 (Study of Circularly Polarized Ceramic Antenna on Symmetric and Asymmetric Ground Plane) ..............................3 2.1 一圓極化陶瓷天線置於對稱接地面之分析 ................. 3 2.1.1 設計原理 ............................................3 2.1.2 模擬分析與心得討論 ..................................4 2.2 一圓極化陶瓷天線置於非對稱接地面之分析(1) .............8 2.2.1 設計原理 ............................................8 2.2.2 模擬分析與心得討論 ..................................9 2.3 一圓極化陶瓷天線置於非對稱接地面之分析(2) ............13 2.3.1 設計原理 ...........................................13 2.3.2 模擬分析與心得討論 .................................14 第三章 圓極化陶瓷天線在非對稱接地面之設計準則 (Design Rule of Circularly Polarized Ceramic Antenna on an Asymmetric Ground Plane) .................................18 3.1 在接地面上置入一狹縫形槽孔 ...........................18 3.1.1 設計原理 ...........................................18 3.1.2 模擬分析與心得討論 .................................19 3.2 包含RF電路之實際設計考量 .............................23 3.2.1 設計原理 ...........................................23 3.2.2 模擬分析與心得討論 .................................27 第四章 結論 (Conclusions) ...............................35 參考文獻 (References) ................................... 36 附錄A 論文著作表 (Publication List) ......................38 |
參考文獻 References |
[1]K.L. Wong, Compact and Broadband Microstrip Antennas, Wiley, New York, 2002. [2]K.L. Wong, Planar Antennas for Wireless Communications, Wiley, New York, 2003. [3]C.M. Su and K.L. Wong, “Surface-mountable dual side-feed circularly polarized ceramic-chip antenna,” Microwave Opt. Technol. Lett., Vol. 35, No. 2, Oct. 20, 2002. [4]Y.C. Lin, T.W. Chiu and K.L. Wong, “Small-size surface-mountable circularly polarized ceramic-chip antenna for GPS application,” Microwave Opt. Technol. Lett., Vol. 40, No. 4, Feb. 20, 2004. [5]W.S. Chen, C.K. Wu and K.L. Wong, “Single-feed square-ring microstrip antenna with truncated corners for compact circular polarization operation,” IEE Electron. Lett., Vol. 34, No. 11, pp. 1045-1047, May 28, 1998. [6]W.S. Chen, C.K. Wu and K.L. Wong, “Compact circularly polarized microstrip antenna with bent slots,” IEE Electron. Lett., Vol. 34, No. 13, pp. 1278-1279, Jun. 25, 1998. [7]C.W. Su and K.L. Wong, “Circularly polarized microstrip antenna with a rectangular ground plane,” Microwave Opt. Technol. Lett., Vol. 37, No. 2, Apr. 20, 2003. [8]T. Mitsui, “Planar inverted F antenna,“ US Patent Pub. No. 2002/0149525 A1, Oct. 17, 2002 [9]D. M. Pozar, Microwave Engineering, Wiley, New York, 1998 [10]“LineGuage Version 1.01,“ Zeland Software, Copyright 2001 |
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