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| DC 欄位 | 值 | 語言 |
|---|---|---|
| dc.contributor.advisor | 林怡成 | |
| dc.contributor.author | Tzu-Hsuan Weng | en |
| dc.contributor.author | 翁子軒 | zh_TW |
| dc.date.accessioned | 2021-06-15T00:16:12Z | - |
| dc.date.available | 2009-06-23 | |
| dc.date.copyright | 2009-06-23 | |
| dc.date.issued | 2009 | |
| dc.date.submitted | 2009-06-08 | |
| dc.identifier.citation | [1] R. S. Elliott, Antennas Theory and Design, Wiley, 2003.
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Clarke, An independently fed log-periodic antenna for directed pulsed radiation, IEEE Transactions on Electromagnetic Compatibility, Vol.41, No. 4, pp. 344–349, Nov. 1999. [22] W. Sorgel, C. Waldschmidt, and W. Wiesbeck, “Transient Responses of a Vivaldi Antenna and a Logarithmic Periodic Dipole Array for Ultra Wideband Communication”, IEEE Antennas and Propagation Society International Symposium, Vol. 3, pp. 592-595, June 2003. [23] W. Wiesbeck, and G. Adamiuk, “Antennas for UWB-Systems”, INICA'07. 2nd International ITG Conference, 2007 [24] R. W. Ziolkowski, and P. Jin, “Using metamaterials to achieve phase center compensation in a log-periodic array”, Antennas and Propagation International Symposium, 2007 IEEE, 2007 [25] S. Y. Chen, P. H. Wang, and P. Hsu, “Uniplanar log-periodic slot antenna fed by a CPW for UWB applications,” IEEE Antennas and Wireless Propagation Letters, Vol. 5, pp. 256-259, 2006 [26] N. Marchand, “Transmission line conversion,” Electronics, vol.17, pp. 142–145, Dec. 1944. [27] J. W. McLaughlin, D. A. Dunn, and R. W. Grow, “A wide-band balun, ” IRE Transactions on Microwave Theory and Techniques, Vol. MTT-6, pp. 314-316, July 1958. [28] J. Schellenberg, and H. Do-ky, “Low-loss, planar monolithic baluns for K/Ka-band applications,” IEEE MTT-S International Microwave Symposium Digest, Vol. 4, pp. 1733–1736, Jun. 1999. [29] Z.Y. Zhang, Y. X. Guo, L. C. Ong, and M. Y. W. Chia, 'A New Planar Marchand Balun,' IEEE MTT-S International Microwave Symposium Digest, 2005. [30] K. S. Ang, I. D. Robertson, K. Elgaid, and I. G. Thayne, “40 to 90 GHz impedance transforming CPW Marchand balun,” IEEE MTT-S International Microwave Symposium Digest, Vol. 2, pp. 141–1144, June 2000. [31] Y.L. Chen, and H.H. Lin, “Novel Broadband Planar Balun Using Multiple Coupled Lines, ” IEEE MTT-S International Microwave Symposium Digest, 2006. [32] K. Nishikawa, I. Toyoda, and T. Tokumitsu, “Compact and broad-band three-dimensional MMIC balun,” IEEE Transactions on Microwave Theory and Techniques, Vol. 47, No. 1, pp. 96–99, Jan. 1999. [33] G. Oltman, “The compensated balun,” IRE Transactions on Microwave Theory and Techniques, Vol. MTT-14, No. 3, pp. 112–119, Mar. 1966. [34] A. C. Chen, M. J. Chen, and A.V. Pham, “Design and Fabrication of Ultra-Wideband Baluns Embedded in Multilayer Liquid Crystal Polymer Flex,” IEEE Transactions on advanced packaging, Vol. 30, No. 3, pp. 533–540, Aug. 2007. | |
| dc.identifier.uri | http://tdr.lib.ntu.edu.tw/jspui/handle/123456789/41340 | - |
| dc.description.abstract | 對數週期偶極天線在理論上是屬於一種非頻變且具有穩定增益的線性極化天線。平面化對數週期偶極天線於近年提出，然而其交叉極化隔離度之效能並不理想，且仍多以同軸電纜方式饋入，因製作複雜度及重量增加，而造成使用上的諸多不便。本論文首先成功地將傳統立體結構的平衡不平衡轉換器平面化，且仍保有原先之特性，再將其應用於饋入平面化對數週期偶極天線。另外，吾人利用帶線結構來進行平面化對數週期偶極天線內的能量傳輸，使得交叉極化獲得改善。最後，本論文成功地設計出1.2GHz至3.3GHz之對數週期偶極天線，其正向增益約為1dBi，交叉極化隔離度約20dB，由實際製作電路板所做之量測與模擬結果具有一致性。 | zh_TW |
| dc.description.abstract | Theoretically, the log-periodic dipole antenna is a linearly polarized frequency independent antenna with stable gain patterns. Planar PCB log-periodic dipole antennas were recently proposed, while its performance on cross-polarization isolation is far from being ideal with drawbacks on feeding by a coaxial line, thus increases complexity, weight and difficulties in applications. In this thesis, we firstly planarize a traditional three-dimensional balun successfully, while keeping the original wideband characteristics and therefore suitable for feeding a planar PCB log-periodic dipole antenna. In addition, we apply a stripline structure for the energy transmission within planar PCB log-periodic dipole antennas to supress the cross-polarization. The proposed antenna is successfully simulated, built, and tested with the broadside gain about 0dB to 3dB and the cross-polarization isolation about 20dB in the 1.2~3.3GHz band. A good agreement is achieved between the measured and simulated results. | en |
| dc.description.provenance | Made available in DSpace on 2021-06-15T00:16:12Z (GMT). No. of bitstreams: 1 ntu-98-R95942021-1.pdf: 4317379 bytes, checksum: f07f97382fba09e07165ace6cf6ea802 (MD5) Previous issue date: 2009 | en |
| dc.description.tableofcontents | 誌謝…………………………………………………………………i
中文摘要……………………………………………………………ii 英文摘要……………………………………………………………iii 第一章 簡介………………………………………………………1 1.1 研究動機………………………………………………………1 1.2 章節概要………………………………………………………2 第二章 對數週期偶極天線之基礎研究與討論…………………3 2.1 前言……………………………………………………………3 2.2 設計參數與基本概念…………………………………………3 2.3 各類型對數週期偶極天線……………………………………9 2.4 對數週期偶極天線之相位中心探討…………………………12 第三章 天線饋入機制之研究…………………………………14 3.1 前言……………………………………………………………14 3.2 平面化Marchand Balun文獻探討……………………………15 3.3 Marchand Balun原理探討……………………………………18 3.4 以ADS進行Marchand Balun之主要參數分析…………………20 3.5 超寬頻平面化Balun之設計……………………………………22 3.4.1 超寬頻平面化Balun結構……………………………………22 3.4.2 模擬與量測結果……………………………………………24 第四章 以Balun饋入之對數週期偶極天線實現在 FR4板之研究…27 4.1 前言……………………………………………………………27 4.2 傳統型平面化對數週期偶極天線……………………………27 4.2.1 天線結構……………………………………………………27 4.2.2 模擬結果……………………………………………………29 4.3 以平行線型態改善交叉極化…………………………………39 4.3.1 天線結構……………………………………………………39 4.3.2 模擬與量測結果……………………………………………41 4.4 以帶線型態改善交叉極化……………………………………48 4.4.1 天線結構……………………………………………………48 4.4.2 模擬與量測結果……………………………………………51 4.4.3 各重要參數對天線表現的影響……………………………59 第五章 結論……………………………………………………60 參考文獻……………………………………………………………61 | |
| dc.language.iso | zh-TW | |
| dc.subject | 平面化天線 | zh_TW |
| dc.subject | 交叉極化隔離 | zh_TW |
| dc.subject | Marchand平衡不平衡轉換器 | zh_TW |
| dc.subject | 寬頻 | zh_TW |
| dc.subject | 對數週期天線 | zh_TW |
| dc.subject | broadband | en |
| dc.subject | LPA | en |
| dc.subject | cross-polarization isolation | en |
| dc.subject | Marchand Balun | en |
| dc.subject | planar antenna | en |
| dc.title | 以印刷電路板設計之平衡饋入式超寬頻對數週期天線 | zh_TW |
| dc.title | PCB Design of Balanced UWB Log Periodic Antennas | en |
| dc.type | Thesis | |
| dc.date.schoolyear | 97-2 | |
| dc.description.degree | 碩士 | |
| dc.contributor.oralexamcommittee | 莊晴光,鄭士康,張道治,鍾世忠 | |
| dc.subject.keyword | Marchand平衡不平衡轉換器,交叉極化隔離,對數週期天線,平面化天線,寬頻, | zh_TW |
| dc.subject.keyword | Marchand Balun,cross-polarization isolation,LPA,planar antenna,broadband, | en |
| dc.relation.page | 64 | |
| dc.rights.note | 有償授權 | |
| dc.date.accepted | 2009-06-08 | |
| dc.contributor.author-college | 電機資訊學院 | zh_TW |
| dc.contributor.author-dept | 電信工程學研究所 | zh_TW |
| 顯示於系所單位： | 電信工程學研究所 | |
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