研究生: |
何丞翊 Chen-Yi Ho |
---|---|
論文名稱: |
適用於金屬機殼筆電之行動通訊與無線區域網路天線設計 Mobile Communication and Wireless LAN Antenna Designs for Laptops with Metal Enclosures |
指導教授: |
廖文照
Wen-Jiao Liao |
口試委員: |
楊成發
Chang-Fa Yang 馬自莊 Tzyh-Ghuang Ma 侯元昌 Yuan-Chang Hou |
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: | 105 |
中文關鍵詞: | WLAN 、Wi-Fi 6E 、5G FR1 、槽孔天線 、筆電裝置天線 、多輸入多輸出 |
外文關鍵詞: | WLAN, Wi-Fi 6E, 5G FR1, slot antennas, laptop antennas, MIMO |
相關次數: | 點閱:559 下載:0 |
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本論文提出三款適用於金屬機殼的筆電天線設計,利用槽孔天線與金屬環境相容且方便與機構整合,以及擁有小尺寸及低姿態結構的特點,將天線設計在機殼的邊框上,可符合目前筆記型電腦窄邊框與金屬機殼的產品發展趨勢。
論文中第一款設計為應用於筆電環境之多頻與寬頻槽孔天線。該天線透過兩個四分之一波長槽孔共振,覆蓋傳統的WLAN雙頻;並利用中島結構構成一個二分之一波長的共振模態,可涵蓋新興的Wi-Fi 6E頻段。天線在尺寸及性能上都具有優勢。
第二款天線設計為具金屬隔離腔之多頻與寬頻槽孔天線,其架構係第一款設計的進階優化,天線操作頻段包含WLAN雙頻及Wi-Fi 6E頻段。透過與槽孔天線整合的半開放式隔離腔,阻擋往隔離腔後方的電磁輻射,避免射頻訊號對筆電裝置內部電路形成干擾。
第三款天線設計為應用於筆電金屬邊框之H形槽孔MIMO雙天線,天線應用頻段包含相當部分的4G LTE與5G FR1頻率範圍。該天線透過多個槽孔結構的共振模態組合出寬頻的效果。雙天線間距僅5 mm,但具備不錯的隔離度與天線效能,適合應用於緊湊佈局的行動裝置。
This thesis proposes three different slot antenna designs for laptops with metal enclosures. Due to the compatibility with the metal environment and low-profile characteristics, slot antennas are convenient to be combined with laptop structures.
In the first part, a multi-band and broadband slot antenna is proposed. The WLAN dual-band resonances are provided by two quarter-wavelength single-ended open slots. The Wi-Fi 6E band resonance is provided by a half-wavelength dual-end-closed slot. The resonant mechanism is examined in each band. Simulation results show that the proposed multi-band antenna has good impedance matching and high radiation efficiency in desired WLAN/Wi-Fi 6E bands.
The second antenna design is a shielding-cavity-integrated multi-band slot antenna. To avoid RF signal interference the toward laptop’s internal circuits, this innovative design integrates the slot antenna with a semi-open shielding cavity. It blocks electromagnetic radiations from components behind the shielding cavity. The operation bands of this antenna design include both WLAN and Wi-Fi 6E bands.
The third antenna design is a compact multi-band H-shaped slot antenna. It combines multiple resonant modes, and hence supports operations in most 5G FR1 communication bands. A two-antenna assembly is proposed to support MIMO operation. The isolation between the two antennas, which is spaced by 5 mm only, exceeds 12 dB. It is, therefore, suitable for mobile devices of a compact space and MIMO operation needs.
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