研究生: |
蔡淳安 Chun An Cai |
---|---|
論文名稱: |
應用於筆電環境之多頻無線區域網路天線設計 Multi-Band Wi-Fi 6E Antenna Designs for Laptop Environment |
指導教授: |
廖文照
Wen-Jiao Liao |
口試委員: |
馬自莊
Tzyh-Ghuang Ma 楊成發 Chang-Fa Yang 侯元昌 Yuan-Chang Hou 廖文照 Wen-Jiao Liao |
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: | 2022 |
畢業學年度: | 110 |
語文別: | 中文 |
論文頁數: | 77 |
中文關鍵詞: | Wi-Fi 6E 、立體式開槽孔天線 、共構天線 、貼片天線 、筆電天線 |
外文關鍵詞: | Wi-Fi 6E, open-ended slot antenna, integrated antenna, patch antenna, notebook antenna |
相關次數: | 點閱:442 下載:0 |
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本篇論文提出了兩款適用於筆電環境的天線,操作於Wi-Fi 6E頻段,天線架構簡單且容易製造,兩款天線在未使用LC元件於饋入電路的條件中,均有良好的寬頻表現,符合現今筆電天線設計需求。
論文中的第一款天線為應用於筆電環境之Wi-Fi 6E多頻立體式開槽孔天線,天線尺寸為52 × 7.65 × 10 mm3。該設計利用開槽孔架構,製造不同的共振路徑長,產生多個模態,槽孔中的Γ型中島結構除了增加高頻模態外,也可以用來調整阻抗匹配。立體式的架構可與筆電內部金屬零組件共構,達到節省空間的目的。共構零組件的標的選擇散熱鰭片,因其為被動元件,不易影響高頻訊號。吾人在天線下方放置不同形式的散熱鰭片,分析最佳的共構方式。
第二款天線為應用於金屬筆電環境之水平面全向性涵蓋優化之多頻微小化貼片天線模組,天線尺寸為20.4 mm × 12 mm × 5 mm3。主要透過金屬短路柱使貼片天線的0.5波長雙端開路共振模態變為0.25波長單端開路槽孔共振模態,使輻射場型能偏向天線模組的開口方向輻射。天線也透過耦合饋入的方式拓展頻寬。所設計之天線模組在2.45 GHz模態的電場方向垂直於金屬貼片,同時垂直於金屬機殼,符合電場存在邊界條件,受到鏡像電流的影響較小。在雙天線水平面分集增益涵蓋率的分析中可發現,其表現優於筆電上傳統使用的倒F型全向性天線。
Two antennas designs applicable to the notebook environment are proposed. Both of them operate in the Wi-Fi 6E Band. The proposed antenna structure is simple and easy to manufacture. Wide matching bandwidth are achieved without using any lumped LC components. Exhibited performance characteristics meet the requirements of modern antenna design.
The first part of this thesis is a three-dimensional multi-band open slot antenna for the notebook environment. The antenna size is 52 × 7.65 × 10 mm3. The open-ended slot structure forms different resonance paths to generate multiple modes. The Γ-type mid-island structure adjusts matching impedance and includes high order modes. The three-dimensional structure is designed with integration of notebook’s internal metal components in mind. The component to be integrated is the cooling fins. Because they are passive components, they impose limited interference toward microwave signals. Several cooling fin configurations are examined with the proposed antenna to find a suitable design.
The second antenna proposed is a multi-mode miniaturized patch antenna.Its design goal is to optimize the horizontal plane coverage of a notebook with metal enclosure. The size of the antenna is 20.4 mm × 12 mm × 5 mm3. By adding shorting pins in the patch’s cavity TM01 resonant mode can be turned into TM02, which radiates toward the sides of patch opening. The bandwidth of the antenna is made wider by using the coupling feed structure. The electric field of the proposed antenna module is perpendicular to the patch and the notebook’s metal casing, which is less affected by the mirror current. Measured results show that the diversity gain coverage ratio of the two antenna assembly, is better than the one of the conventional two-inverted-F antenna system.
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