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| DC 欄位 | 值 | 語言 |
|---|---|---|
| dc.contributor.advisor | 林怡成 | |
| dc.contributor.author | Chu-Ann Chang | en |
| dc.contributor.author | 張楚安 | zh_TW |
| dc.date.accessioned | 2021-07-11T15:50:29Z | - |
| dc.date.available | 2021-08-10 | |
| dc.date.copyright | 2018-08-10 | |
| dc.date.issued | 2018 | |
| dc.date.submitted | 2018-07-27 | |
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| dc.identifier.uri | http://tdr.lib.ntu.edu.tw/jspui/handle/123456789/79177 | - |
| dc.description.abstract | 本論文旨在設計超寬頻對數周期天線與超寬頻平衡器電路，以整合成超寬頻線性極化天線。對數週期天線屬於非頻變天線的一種，具有線性極化與平穩的增益場型等特性。此類天線需額外設計超寬頻平衡器以連接天線端與不平衡饋入端，使其系統及場型及增益穩定，天線操作頻帶得以拓展。
文中平衡器之設計部分，分析傳統Marchand Balun之工作原理並將之轉化為等效傳輸線電路，實踐架構平面化。運用平面式印刷電路技術製作，模擬及量測平衡器之操作頻帶落在0.8 GHz至9.7 GHz (比值為12:1)。本文設計兩個版本天線，第一個輻射場型為端射，與文中設計之平衡器做整合後，模擬及量測之增益值在0.8 GHz至8 GHz皆高於3 dBi (比值為10:1)；而另一天線則產生寬邊輻射場型，與設計之平衡器整合後在0.8 GHz至10.5 GHz之增益值皆落在3 dBi 以上(比值13:1)。 | zh_TW |
| dc.description.abstract | This thesis is about the design of both ultra-wideband log periodic antennas and the balance feeding network, which can be integrated together.
A frequency independent antenna generates stable radiation patterns throughout the entire operating band. However, when feeding with an unbalance circuit, this kind of antennas has negative impact like gain-dropping, tilting patterns, or even making the system unstable. In this article, we designed and implementation a planarization balun which operates from 0.8 GHz to 9.7 GHz (ratio = 12:1). Two proposed antennas are design and integrated with the proposed balun. The first integrated antenna design generates endfire patterns with realized gain better than 3 dBi from 0.8 GHz to 8 GHz (ratio=10:1). The other integrated antenna design generates broadside patterns with realized gain better than 3dBi from 0.8 GHz to 10.5 GHz (ratio=13:1). | en |
| dc.description.provenance | Made available in DSpace on 2021-07-11T15:50:29Z (GMT). No. of bitstreams: 1 ntu-107-R05942019-1.pdf: 5986954 bytes, checksum: 4756c5a4ee5ac56170c269e666ee2af9 (MD5) Previous issue date: 2018 | en |
| dc.description.tableofcontents | 誌謝 i
中文摘要 ii Abstract iii 圖目錄 vi 表目錄 xiii 第一章 簡介 1 1.1背景知識 1 1.2研究動機 3 1.3章節概要 3 第二章 平面印刷式超寬頻功率分配平衡器之設計與實作 4 2.1 前言 4 2.2 平衡器之文獻探討 5 2.3 平衡器原理探討 9 2.4 平衡器之設計方法探討 11 2.5 功率分配平衡器之應用 16 2.6 功率分配平衡器之實現與設計 18 2.6.1 超寬頻功率分配平衡器之文獻探討 18 2.6.2 功率分配平衡器之設計與結構 20 2.6.3 功率分配平衡器模擬結果與探討 31 2.6.4 功率分配平衡器實作與量測結果 34 第三章 超寬頻對數周期天線之設計 39 3.1 前言 39 3.2 文獻探討 39 3.3 超寬頻對數週期端射天線設計 47 3.3.1 超寬頻對數週期端射天線架構與參數 47 3.3.2 超寬頻對數週期端射天線模擬結果 49 3.4 超寬頻對數週期寬邊輻射天線設計 56 3.4.1 超寬頻對數週期寬邊輻射天線架構與參數 56 3.4.2超寬頻對數週期寬邊輻射天線設計過程與分析 58 第四章 超寬頻天線之整合設計 68 4.1 超寬頻端射天線與饋入之討論與設計 68 4.2超寬頻端射天線與饋入網路整合模擬及量測結果 69 4.3超寬頻寬邊天線饋入網路之討論與設計 79 4.4超寬頻寬邊天線與饋入網路整合模擬及量測結果 83 4.5模擬與量測之分析與探討 96 第五章 結論 97 參考文獻 98 | |
| dc.language.iso | zh-TW | |
| dc.subject | 功率分配器 | zh_TW |
| dc.subject | 超寬頻 | zh_TW |
| dc.subject | 平衡器 | zh_TW |
| dc.subject | 對數週期天線 | zh_TW |
| dc.subject | 低交叉極化 | zh_TW |
| dc.subject | Low X-pol | en |
| dc.subject | Log Periodic Antenna | en |
| dc.subject | Ultra-Wideband | en |
| dc.subject | Balance Feeding | en |
| dc.subject | Power Divider | en |
| dc.title | 印刷式對數週期天線與超寬頻功率分配平衡器之整合設計 | zh_TW |
| dc.title | Integrated Design of Printed Log Periodic Antennas and Balanced Power Divider for Ultra-Wideband Applications | en |
| dc.type | Thesis | |
| dc.date.schoolyear | 106-2 | |
| dc.description.degree | 碩士 | |
| dc.contributor.oralexamcommittee | 周錫增,陳士元,馬自莊 | |
| dc.subject.keyword | 超寬頻,平衡器,功率分配器,對數週期天線,低交叉極化, | zh_TW |
| dc.subject.keyword | Ultra-Wideband,Balance Feeding,Power Divider,Log Periodic Antenna,Low X-pol, | en |
| dc.relation.page | 101 | |
| dc.identifier.doi | 10.6342/NTU201802044 | |
| dc.rights.note | 有償授權 | |
| dc.date.accepted | 2018-07-27 | |
| 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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