DC 欄位 值 語言 DC.contributor 電機工程學系在職專班 zh_TW DC.creator 劉淞志 zh_TW DC.creator Sun-chih Liu en_US dc.date.accessioned 2012-7-12T07:39:07Z dc.date.available 2012-7-12T07:39:07Z dc.date.issued 2012 dc.identifier.uri http://ir.lib.ncu.edu.tw:88/thesis/view_etd.asp?URN=975301016 dc.contributor.department 電機工程學系在職專班 zh_TW DC.description 國立中央大學 zh_TW DC.description National Central University en_US dc.description.abstract 本研究論文中所提出的多頻天線設計，除了可滿足無線廣域網路及長期演進的八頻操作頻段，也適合內藏於智慧型行動裝置中。首先，將單極天線做一改良，產生0.83GHz 及1.86 GHz 兩個共振頻率點。接著於單極天線饋入位置增加Tuning Trace 的調整機制，並採用單極天線頂部與金屬片結合的做法，使多頻單極天線能夠在低、中、高頻 都能有良好的阻抗匹配，反射係數若以6dB 來定義，使多頻單極天線足以涵蓋LTE700、LTE2300、LTE2500、GSM850、GSM900、DCS1800 、PCS1900 及UMTS 等八個操作頻段，最後，提出一種結構簡單、量產容易、成本低廉且可應用LTE/WWAN 的金屬板與印刷電路板結合的天線。它能涵蓋八個頻段，包含了LTE700/2300/2500 的三個LTE 頻 段及GSM850/900/DCS1800/PCS1900/UMTS 的五個WWAN 頻段，且天線體積僅為56 × 18 × 3 mm3。詳細的天線設計方式及實驗數據將在本論文中說明及討論。 zh_TW dc.description.abstract In this thesis, we will talk about the design of multi-frequency antennas of eight frequency operation bands for the wireless WAN and long-term evolution applications. The proposed design is also able to be embedded in smart mobile devices. First, a modified structure of monopole antenna is used, and the resonance frequencies of 0.83GHz and 1.86GHz are obtained. Then, by adding trace to fed monopole antenna, the trace for tuning matching, and the plate and printed circuit board (PCB) combo of antenna, the bandwidth is improved in the low, medium, and high frequency ranges. The multi-band monopole antenna can be operated over the eight operating frequency bands of the LTE700, LTE2300, LTE2500, GSM80,GSM900, DCS1800, PCS1900 and UMTS. Finally, we can have the antenna that was of simple structure, easy production, low cost, and can be applied to of LTE/WWAN. The antenna was combining metal board with the printed circuit board. It covers eight bands, including the three LTE frequency band of the LTE700/2300/2500 and five WWAN bands of GSM850/900/ DCS1800/PCS1900/UMTS. The antenna size is only 56 × 18 × 3 mm3 . The details of the antenna design methods and experimental data will be described and discussed in this thesis. en_US DC.subject 天線 zh_TW DC.subject 內藏式手機天線 zh_TW DC.subject 長期演進天線/無線廣域網路 zh_TW DC.subject Antennas en_US DC.subject Internal handset antennas en_US DC.subject LTE/WWAN antennas en_US DC.title 應用於智慧型行動裝置之LTE/WWAN多頻單極天線設計 zh_TW dc.language.iso zh-TW zh-TW DC.title Design of LTE/WWAN Multi-Frequency Monopole Antenna for Smart Mobile Devices en_US DC.type 博碩士論文 zh_TW DC.type thesis en_US DC.publisher National Central University en_US