本論文主要是設計並探討一可涵蓋長期演進(LTE700/2300/2500)及無線廣域網路(GSM850/GSM900/DCS1800/PCS1900UMTS2100)八個頻段之平面式小型化天線(83mm x 10mm)，並可內置應用於筆記型電腦、平板電腦等產品。 由於時下筆記型電腦、平板電腦等產品外觀設計多以輕薄為主，故此論文天線設計乃以一平面式天線結構為設計方向，並在天線路徑上加入一間隙耦合結構以及寄生的旁支路徑以達到小型化的天線需求 由於此天線結構簡單，實際應用上僅需採用成熟的印刷電路技術方式製作，不需額外的組裝加工，在大量生產時天線特性具有高度一致性及製作成本低廉之優點。在設計天線低頻部分(LTE700/GSM850/GSM900)，乃是藉由在低頻路徑上設計一間隙耦合結構縮短電流路徑並增加天線低頻頻寬，再利用兩個寄生路徑增加天線頻寬並可調整天線阻抗匹配特性，而高頻部分(DCS1800/PCS1900/UMTS2100/ LTE2300/LTE2500)則是利用在高頻主要路徑上增加一彎曲分支路徑以及另一個寄生路徑藉以調整天線匹配並達到此應用高達1GHz頻寬的需求。詳細的天線設計模擬分析以及實作結果在本文中將一一介紹。 In this thesis, a planar miniaturized antenna(83mm x 10mm) which covered eight bands of Long-term Evolution(LTE700 / 2300 / 2500) and Wireless Wide Area Network(GSM850 / GSM900 / DCS1800 / PCS1900 / UMTS2100) for embedded application in the Laptop and Tablet PCs is presented. Nowadays, the trend of Laptop and Tablet PC products design are slim and light-based, therefore, the proposed antenna in this thesis is base on a planar antenna structure and using a gap-coupled structure in the loop antenna to achieve the miniaturization antenna demand. The proposed antenna can be realized by mature printed circuit board technology easily since its structure is very simple, and do not need additional assembly and processing which means the antenna characteristics have a high degree of consistency and production cost advantages for mass production. For the low-band portion(LTE700 / GSM850 / GSM900) of antenna, the proposed antenna was using a gap-coupled structure for increasing antenna bandwidth and two parasitic strips for tuning the antenna matching as well. For the high-band portion(DCS1800 / PCS1900 / UMTS2100 / LTE2300 / LTE2500) of antenna, the proposed antenna was added two parasitic strips for tuning the high-band matching to achieve up to 1 GHz bandwidth demand. Detailed antenna designs and measured results are introduced in this thesis.
