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研究生:翁國霖
研究生(外文):Kuo-Lin Weng
論文名稱:應用於無線傳能之槽孔耦合雙圓極化整流天線設計
論文名稱(外文):The Design of Slot-Coupled Dual Circular Polarized Rectenna for Wireless Power Transmission
指導教授:林丁丙林丁丙引用關係
口試委員:蘇志銘曾昭雄林信標邱建青
口試日期:2012-07-03
學位類別:碩士
校院名稱:國立臺北科技大學
系所名稱:電腦與通訊研究所
學門:工程學門
學類:電資工程學類
論文種類:學術論文
論文出版年:2012
畢業學年度:100
語文別:中文
論文頁數:70
中文關鍵詞:雙圓極化諧波抑制微帶天線整流天線整流電路轉換效率
外文關鍵詞:dual circular polarizedrectennaharmonic rejectionrectifier circuitmicrostrip antennaconversion efficiency
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本論文目的為設計創新的天線結構,應用於無線功率傳輸之頻段接收2.45 GHz WLAN (IEEE 802.11b)之雙圓極化整流天線結合諧波抑制,可運用無線功率接收之課題上,將接收之射頻能量轉換為直流能量輸出,進而對充電電池充電,達到無線充電之目的。

本文針對台灣頻段2.45 GHz WLAN系統,提出工作在2.45 GHz之雙圓極化濾波整流天線,整體結構共可分為天線與整流電路兩個部分設計,第一部分天線選擇微帶天線來做主要設計,利用雙微帶線耦合饋入的方式搭配饋入線上的開路殘段,可達到雙圓極化以及阻抗匹配之目的,並且此雙圓極化天線具有諧振濾波之功,透過在地上加入槽孔之設計,達到2.45 GHz 頻段接收,天線整體尺寸為100×100×3.7 mm3。

第二部分為整流電路之設計,透過整流電路可將前端天線接收進來的射頻能量轉換為直流能量輸出,並可利用輸出之直流能量,對充電電池進行充電。當輸入功率為22 dBm與整流電路後方負載為1000 Ω時,整體整流電路在2.45 GHz量測之最大轉換效率與輸出電壓分別為81.94 %與11.45 V,得到良好的量測效能應用於無線傳能之課題上。


This paper presents a dual circular polarized rectenna structure with harmonic rejection filter to receive 2.45 GHz WLAN (IEEE802.11b) system for Wireless Power Transmission(WPT). The proposed rectenna is suitable for the subject of wireless receiving, the receiving RF energy is converted to DC in order to charge the rechargeable battery for the purpose of wireless charge.

In this paper, proposed a dual-circular polarization filter rectenna for work in 2.45 GHz WLAN system. The structure can be divided into two parts of the design of the antenna and rectifier circuit. The first part of microstrip antenna for the main design, which are fed into pairs of microstrip coupled with open stub that achieve the purpose of the dual-circular polarization, impedance matching, and resonant filter, the design of slot on the ground plane, to reach 2.45 GHz band receiver, the antenna size is 100×100×3.7 mm3

The second part is the design of the rectifier circuit, the receiving RF energy which in front of the antenna, through the rectifier circuit can convert to DC output. The output of DC power can charge the rechargeable battery. While the input power is 22 dBm and the rectifier circuit load is 1000 Ω, the overall rectifier circuit in the 2.45 GHz band through the measurement of the maximum conversion efficiency and output voltage of 81.94 % and 11.45 V, respectively. The measured result shows a good performance for the WPT application.

摘 要 i
ABSTRACT ii
目 錄 v
圖目錄 vi
表目錄 ix
第一章 緒論 1
1.1 研究背景與動機 1
1.2 研究方向 5
1.3 文獻探討 9
1.3.1 無線傳能之整流天線設計 9
1.3.2 無線傳能之整流電路設計 11
1.4 論文架構 13
第二章 天線理論介紹 14
2.1 概述 14
2.2 偶極天線 14
2.3 微帶天線設計原理 19
2.4 天線極化種類與理論基礎 22
第三章 2.45GHz雙圓極化整流天線設計 28
3.1 概述 28
3.2 雙圓極化濾波微帶天線架構 29
3.2.1雙圓極化濾波微帶天線結構 29
3.2.2雙圓極化濾波微帶天線參數探討與分析 36
3.2.3天線輻射場型 42
第四章 2.45 GHz整流電路設計 45
4.1 概述 45
4.2 蕭特基二極體 45
4.2.1蕭特基二極體之基本理論與概述 45
4.2.1 HSMS-282C蕭特基二極體簡介 49
4.3 半波倍壓之基本理論 53
4.4 應用於2.45GHz之射頻半波整流倍壓電路設計 55
4.4.1 半波倍壓整流電路設計 55
4.5 整流天線之輸出電壓、系統轉換效率 61
4.6 整流天線應用於無線充電 64
第五章 結論 66
參考文獻 67

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