臺灣博碩士論文加值系統

無線通訊系統中使用於2GHz~6GHz之頻段相當廣泛，如射頻辨識系統(Radio Frequency Identification，RFID 2.4GHz)、無線網路(Wireless LAN，WLAN 2400–2484 MHz,and 5150–5350/5725–5875 MHz MHz)、全球互通微波存取系統(WiMAX 3.5GHz) ，及藍芽系統(Bluetooth 2.4GHz)等 。為了同時使用在無線網路及全球互通微波存取系統，本論文主要使用模擬軟體IE3D來模擬與設計共平面波導單邊饋入天線，最後成功製作出小型三頻天線。
天線製作皆以平面印刷方式設計，使天線具有低剖面的優點，且易與電路基板相互結合，降低製作的成本與提升便利製作特性。本天線採用厚度1.6 之FR-4印刷電路板製作，天線尺寸為 。
另外製作小型寬頻天線(2265MHz~5895MHz)，天線尺寸也是 。以上天線主要應用於筆記型電腦上。

Recently,there are rapid developments in wireless Communications.The frequency range covers 2-6GHz for Radio Frequency Identification (RFID 2.4GHz) , Wireless LAN (2400–2484 MHz,and 5150–5350/5725–5875 MHz MHz), Worldwide Interoperability for Microwave Access(WiMAX 3.5GHz) and Bluetooth(2.4GHz) and so on.
In order to satisfy the IEEE 802.11WLAN standards and wimax application, the triple band operations of the printed antennas are required.A compact modified unilateral fed coplanar Waveguide antenna (CPW) designed by IE3D software is presented.
The antennas are implemented on planar printed circuit boards (PCBs). These antennas are low profile, easy to be constructed and easy to be integrated with microwave integrated circuits. The thickness of the FR-4 PCB is 1.6mm. The size of the antenna is .
The small broadband antenna (2265MHz~5895MHz) was constructed with same technique, The size of the antenna is also . This antenna is suitable for notebook application.

中文摘要..………….……………………………………………………………....…..i
英文摘要..…………………………………………………….………………….…....ii
誌謝..…………………………………………………………….…………....………iii
目錄….………………………………………………………………...….…..………iv
表目錄 ………………………………………………………………....….…….…...vi
圖目錄 ………………………………………………………………….....……...…vii
第一章 緒論 …………………………………………...…………………....…….…...1
1.1 研究背景與動機 ………………..………………………………....……..1
1.2 論文內容提要 ……………..…………………………………………......2
第二章 天線基礎理論..……… ………………………………..……………...….....3
2.1 天線基本概念及相關常用參數………..…………………….…..….…...3
2.1.1 S參數……………….……...………………………….…….………3
2.1.2 波瓣圖………………. ………………………………………….....5
2.1.3 輻射阻抗…………………………………………………………...5
2.1.4 增益………………………………………………………………...6
2.1.5 極化………………………………………………………………...7
2.1.6 史密斯圖…………………………………………………………...8
2.2 偶極天線(Dipole)………………………….……….……………….…..…9
2.3 鏡像定理(Image Theory)……..……….…………………………...……14
2.4 單極天線(Monopole)……..……………..……………..………………...16
2.5 傳輸線介紹………………………………………………………………18
2.5.1 傳輸線與波導結構 ……………………...………...…………….18
2.5.2 共平面波導結構簡介…...…...……………..……...…………..…20
2.6 微帶天線………………………………………………………………...22
2.6.1 微帶天線簡介……… …………………………...……...…..……22
2.6.2 微帶天線理論…………………………...………………………..22
2.7 微帶槽孔天線……………………………………………………………25
第三章 小型多頻天線設計…………………. ………………………….……………26
3.1 前言 …………………………………………….…….………...……….26
3.2 小型三頻天線設計..………………………………………....……….….26
3.2.1 小型三頻天線模擬分析…..……………………………………...27
3.2.2 小型三頻天線實作結果………………………………………….33
3.3 平板式多頻天線 …………….….………………..…………….……….41
3.3.1 平板式多頻天線模擬分析……………………………………….41
3.3.2 平板式多頻天線實作結果……………………………………….46
3.4 本章結果分析討論…...……..…….……………………………...……...51
第四章 小型寬頻天線設計…………………………………………..……………….52
4.1 前言 ……...…………………………………………………………...…52
4.2 小型寬頻天線設計 ……………………………...………………..…….53
4.2.1 小型寬頻天線實作分析..…………………………….……………53
4.2.2 小型寬頻天線實作結果.……………………………….………….58
4.3 本章結果與討論………………………………………………...……….63
第五章 結論與展望……..…………………………….………………..……………..64
參考文獻 ……………………….………………………………...………..………….65
作者簡介……………………………………………………………………………….69

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