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研究生: 葉致彤
Chih-Tung Yeh
論文名稱: 應用於筆電之多頻無線通訊天線設計
Multi-Band Wireless Communication Antenna Designs for Laptops
指導教授: 廖文照
Wen-Jiao Liao
口試委員: 馬自莊
Tzyh-Ghuang Ma
侯元昌
Yuan-Chang Hou
鍾明桉
Ming-An Chung
學位類別: 碩士
Master
系所名稱: 電資學院 - 電機工程系
Department of Electrical Engineering
論文出版年: 2023
畢業學年度: 111
語文別: 中文
論文頁數: 88
中文關鍵詞: Wi-Fi 6EWLANWWAN5G N77槽孔天線筆電天線MIMO
外文關鍵詞: Wi-Fi 6E, WLAN, WWAN, 5G N77, slot antennas, laptop antennas, MIMO
相關次數: 點閱:307下載:6
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  • 為符合消費者需求,行動通訊設備經常使用金屬機殼與薄型機身設計,金屬機殼影響天線訊號輻射,而行動裝置性能的提升造成零組件增加,使內部空間更加緊湊,壓縮到天線配置的空間。本篇論文提出兩款適用於金屬機殼筆電之槽孔天線設計,利用槽孔天線簡單圖形的構造,容易與金屬機殼整合,以及低剖面結構的特點,提出兩款符合目前筆記型電腦需求及發展趨勢的天線設計。
    論文中的第一款天線為應用於金屬筆電,可提供水平面全向性場型之Wi-Fi 6E多頻立體式開槽孔天線,天線尺寸為23.3 × 5.7 × 4 mm3。為了縮小天線尺寸,利用彎折槽孔達到節省天線空間之目的,進一步對天線做立體式彎折縮減天線深度,此天線立體式結構也可便於與筆電金屬機殼共構。天線架構由外層利用雙端開路開槽孔,產生有較長共振路徑的低頻共振模態;內層則增加一個開路槽孔,產生較短共振路徑的高頻共振模態。此MIMO雙天線設計放置於筆電底座短邊,可使水平面場型擁有良好差異性,鏡像擺放雙天線時,其合併場型具有全向性。
    第二款天線為應用於金屬筆電環境之WWAN/WLAN多頻之立體式T形槽孔天線,天線尺寸為121.8 mm × 4 mm × 7.5 mm3,設計天線透過多個槽孔結構的共振模態,擁有寬頻的特性,操作頻段可包含LTE/WWAN高低頻、5G N77與部分WLAN頻率範圍,槽孔天線深度僅4 mm,透過彎折槽孔至邊框,大幅減少天線淨空區域。


    To meet consumer demands, mobile communication devices often feature metal casings and slim designs, which greatly affect antenna characteristics. Furthermore, the advance in device performance has led to an increase in component numbers, which limits resulting in the space applicable for antenna arrangement. This thesis presents two slot antenna designs applicable to metal laptop casings. These designs utilize a simple slot structure, which makes them easy to be integrated with metal casings. They are also very low-profile. The proposed designs meet current antenna development trends in notebook computers.
    The first antenna design is aimed to be used for metal enclosure laptops and provides an omnidirectional radiation pattern for Wi-Fi 6E bands. The antenna dimensions are 23.3 × 5.7 × 4 mm3. To reduce antenna sizes, meandered slots are employed. Furthermore, the bending approach is used to minimize the antenna's depth, which facilitates seamless integration with the laptop's metal casing. The antenna structure consists of an outer layer with dual-ended open slots. It creates a longer resonant path for the lower resonance mode. The inner layer incorporates an additional open slot, which generates shorter resonant paths for high-frequency modes. A MIMO dual-antenna arrangement is placed along the shorter edge of the laptop base. Their radiation patterns on the azimuthal plane exhibit excellent diversity. The combined pattern of the two antennas achieves a nearly omni-directional pattern.
    The second antenna proposed is intended for WWAN/WLAN multi-band uses in metal laptop environments. This design features a 3D T-shaped slot antenna. The dimensions are 121.8 mm × 4 mm × 7.5 mm3. The antenna design utilizes multiple slot structures to achieve the wideband feature. It covers LTE/WWAN high and low bands, 5G N77, and WLAN bands. With an antenna depth of 4 mm only, the design significantly reduces the required area by using the bent slot configuration.

    摘要 I Abstract II 目錄 IV 圖目錄 VI 表目錄 IX 第一章 緒論 1 1.1 研究背景 1 1.2 文獻回顧 2 1.3 論文組織 3 第二章 應用於金屬筆電之全向性Wi-Fi 6E立體式開槽孔天線 4 2.1 研究動機 4 2.2 立體式雙端開槽孔天線設計 6 2.3 開槽孔天線設計參數分析 14 2.4 水平面雙天線輻射場型涵蓋率分析 19 2.5 天線實作與效能驗證 34 2.6 小結 39 第三章 應用於金屬筆電之WWAN/WLAN多頻之立體式T形槽孔天線 41 3.1 研究動機 41 3.2 WWAN/WLAN多頻立體式T形槽孔天線設計 42 3.3 T形天線設計參數分析 51 3.4 筆電環境金屬擋牆對天線效能分析 58 3.5 天線實作與效能驗證 60 3.6 小結 67 第四章 結論 69 參考文獻 70

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