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研究生:汪偉銘
研究生(外文):Wang, wei-ming
論文名稱:小型化偶極天線與多頻帶單極天線之應用
論文名稱(外文):Compact Dipole Antenna and Multi-band Monopole Antenna Applications
指導教授:古家豪古家豪引用關係
指導教授(外文):Ku, Chia-Hao
口試委員:劉獻文王柏仁古家豪
口試委員(外文):Liu, Hsien-WenWang, Pao-JenKu, Chia-Hao
口試日期:2012-07-05
學位類別:碩士
校院名稱:明志科技大學
系所名稱:電機工程研究所
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:61
中文關鍵詞:偶極天線單極天線多頻無線區域網路全球互通微波存取
外文關鍵詞:Dipole antennamonopole antennamulti-bandWLANWiMAX
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本論文中提出了三款具有小型化之雙頻與多頻帶操作之天線,分別根據四分之一與二分之一電氣波長共振的原理,計算出諧振路徑,利用分支、迴路及耦合共振的機制,來達到所需的頻帶。
第一款為雙頻偶極天線,能夠涵蓋Bluetooth、WLAN、WiMAX頻段,結構簡單,由二對U型與T型組成,天線的尺寸大小為6(W)*35(L) mm2,施作於FR-4玻璃纖維板上,工作頻帶包含了2.4-2.55 GHz與4.99-6 GHz,返回損失皆維持在-10dB以下。
第二款為多頻單極天線,能夠涵蓋GSM/DCS/PCS/UMTS頻帶,利用分支及耦合共振所設計,天線的尺寸大小為15(W)*50(L)mm2,同樣是施作於FR-4玻璃纖維板上,工作頻帶則包含0.86-0.96 GHz與1.71-2.17 GHz,返回損失皆維持在-6dB以下。
第三款為多頻立體迴路天線,能夠涵蓋GSM/DCS/PCS/UMTS頻帶,利用迴路共振所設計而成,天線的尺寸大小為20(W)*50(L)mm2,施作於銅板上,工作頻帶則包含0.86-0.96 GHz與1.71-2.17 GHz,返回損失皆維持在-6dB以下。
此三款天線皆經由網路分析儀與無反射實驗室進行天線的返回損失、輻射場型、增益及效率的實際測量後,與模擬結果互相比較,可以得到模擬與實測結果相似。

The three compact structure of dual-band and multi-band operation antennas are proposed in this paper. The resonant path are based on resonating at a quarter and a half wavelengths. By using branch loop and coupling resonant, it can satisfy achieve the required band.
Firstly, a dipole antenna suitable for Bluetooth, WLAN and WiMAX applications is proposed. The antenna is composed of two pairs of T-shaped and U-shaped sections, can achieve a compact size of 6(W)*35(L)mm2 FR4 substructure, With 10 dB return loss, two operating frequency bands covering 2.4-2.55 and 4.99-6 GHz can be obtained with our design.
Second, a monopole antenna suitable for GSM/DCS/PCS/UMTS applications is proposed. The antenna is composed of the loop and the coupling resonance, can achieve a compact size of 15(W)*50(L)mm2 FR4 substructure, With 6 dB return loss, two operating frequency bands covering 0.86-0.96 and 1.71–2.17 GHz can be obtained with our design.
Third, a folded loop antenna suitable for GSM/DCS/PCS/UMTS applications is proposed. The antenna by the resonance loop composed, can achieve a compact size of 20(W)*50(L)mm2 on copper substructure, With 6 dB return loss, two operating frequency bands covering 0.86-0.96 and 1.71–2.17 GHz can be obtained with our design.

明志科技大學碩士學位論文指導教授推薦書
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誌謝
摘要
Abstract
目錄
圖目錄
表目錄
第一章、緒論
1.1 研究背景與動機
1.2 研究目的與方法
1.3 論文大綱
第二章、天線基本原理與特性
2.1 無線通訊系統概述
2.2 偶極天線
2.2.1 偶極天線
2.2.2 折疊型偶極天線
2.3 單極天線
2.3.1 映像理論
2.3.2 單極天線理論
2.4 天線重要參數介紹
2.4.1 天線效率
2.4.2 輻射場型
2.4.3 天線指向性
2.4.4 天線增益
2.4.5 頻帶寬度
2.4.6 輸入阻抗
2.5 常用無線通訊之頻段與優點
第三章、小型化雙頻偶極天線
3.1 前言
3.2 雙頻偶極天線結構設計
3.3 模擬與實測分析
3.4 小結
第四章、多頻單極天線
4.1 前言
4.2 天線結構設計
4.3 模擬與實測分析
4.4 小結
第五章、多頻天線之立體迴路設計
5.1 前言
5.2 天線結構設計
5.3 模擬與實測分析
5.4 小結
第六章、結論
6.1 本研究之成果
6.2 未來研究方向
參考文獻

[1] 李榮坤,無線行動通訊天線研究,國立台灣科技大學電機工程系碩士論文,民國九十九年七月。
[2] 謝永旗,應用於WLAN/WiMAX支小型雙頻、三頻偶極天線,明志科技大學電機工程系碩士論文,民國一百年七月。
[3] Zhang Yabin, "Design of dualband antenna for IEEE 802.11 a/b/g/n applications" Microwave and Optical Technology Letters, vol.53, pp.2890-2893.
[4] Seong-Youp Suh, Waltho, A.E., Krishnamurthy L., Souza D, Gupta S, Pan H.K, Nair V.K, "A miniaturized dual-band dipole antenna with a modified meander line for laptop computer application in the 2.5 and 5.25 GHz WLAN band," Antennas and Propagation Society International Symposium 2006, IEEE, pp.2617-2620, 2006
[5] Chih-Ming Su, Hong-Twu Chen, Kin-Lu Wong, "Printed dual-band dipole antenna with U-slotted arms for 2.4/5.2 GHz WLAN operation," Electronics Letters, vol.38, pp.1308-1309, 2002
[6] Do-Gu Kang, Park J. Lee S, Sung Y, "Planar printed shorted monopole antenna with coupled feed and stub for LTE/WWAN mobile handset applications," Microwave Conference Proceedings (APMC), 2011, pp.622-625
[7] Horng-Dean Chen, Yu-Hung Tsao, "Broadband Capacitively Coupled Patch Antenna for RFID Tag Mountable on Metallic Objects," Antennas and Wireless Propagation Letters, IEEE, vol.9, pp.489-492, 2010
[8] Hsuan-Wei Hsieh, Yi-Chieh Lee, Kwong-Kau Tiong, Jwo-Shiun Sun, "Design of a Multiband Antenna for Mobile Handset Operations," Antennas and Wireless Propagation Letters, IEEE , vol.8, pp.200-203, 2009
[9] Dioum I, Diallo A, Luxey, C Farsi S.M., "Compact dual-band monopole antenna for LTE mobile phones, "Antennas and Propagation Conference, 2010, pp.593-596
[10] Mireles Elias, Brar Manveer K, Moody Robert A, Varanasi Shiv K, Sharma Satish K, "A multiband planar monopole antenna for mobile communication applications," Microwave and Optical Technology Letters, vol.53, pp.2177-2181, 2011
[11] Chia-Hao Ku, Hsien-Wen Liu, Sheng-Yu Lin, "Folded Dual-Loop Antenna for GSM/DCS/PCS/UMTS Mobile Handset Applications," Antennas and Wireless Propagation Letters, IEEE , vol.9, pp.998-1001, 2010
[12] Zheng, M, Wang H, "Internal Hexa-band Folded Monopole/Dipole/Loop Antenna with Four Resonances for Mobile Device," Antennas and Propagation, IEEE Transactions on, no.99, pp.1-6, 2011
[13] Chien-Wen Chiu, Chih-Hao Chang, Yu-Jen Chi, " A compact folded loop antenna for LTE/GSM band mobile phone applications" Electromagnetics in Advanced Applications (ICEAA), pp.382-385, 2010

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