因應影音串流平台崛起，使用者對於行動裝置資料傳輸速率要求日益提高，行動裝置都講求輕薄短小，需在有限空間內擺放多支天線，以支援高階無線傳輸規格，因此天線的耦合干擾是必須解決的問題。
本論文延續本實驗室先前研究主題，針對緊湊式布建之雙天線解耦合技術，進行不同樣態的結構開發。利用筆電轉軸區域形成單端開路之解耦合槽孔，將天線設置在特定位置，使天線間的輻射耦合降低，並設計讓傳導耦合電流相消，形成雙頻解耦合效果，以提升天線間不同頻段的隔離度，藉此提升整體天線架構的有效輻射效率。
配合單端開路解耦合槽孔環境，吾人提出兩款不同類型之天線設計，分別是IFA天線以及槽孔天線，用於所提出之解耦合架構中，並驗證各種類型天線組合之解耦合效能，實驗結果顯示此架構可用於多種類的天線形式。
吾人更進一步將此雙頻解耦合技術由WLAN雙頻延伸至5G NR頻段的寬頻天線應用。將兩耦合零點分別設計在頻段的高低頻處，在頻寬為41 %的5G NR頻段中達到超過15 dB隔離度的效果。吾人也透過實作，量測天線之S參數與輻射效率，驗證解耦合架構的效能。其反射係數、隔離度與輻射效率皆達到筆電產品應用的標準。

Due to the growing need of streaming platforms, user demands on data transmission rates of mobile devices are elevated as well. Note, modern mobile devices are compact in general, and the multi-antenna configuration is needed in a limited space to support advance wireless communication technologies, which in turn requires compact antenna displacement schemes and mitigation in antenna coupling is a must.
This thesis aims to develop a different antenna displacement scheme that is applicable for adopting decoupling techniques for compactly deployed antennas. We use the laptop hinge area to form an open-ended decoupling slot. By placing the antennas at the proper positions, the radiation coupling between antennas can be reduced. Also, the conduction coupling currents canceled by modifying the decoupling slot configuration. A dual-band decoupling structure is developed, which enhances the isolation among antennas and therefore improves the effective radiation efficiency of the two-antenna system.
This work also attempts to employ antennas of different types within the decoupling slot structure. An IFA and a slot antenna are used in the proposed decoupling structure to verify the isolation performance. Measured results show that the proposed decoupling structure is suitable for antennas of different types.
The proposed decoupling technique is utilized for wideband decoupling design as well. This is accomplished by placing two decoupling zeros at the upper and lower band of the desire operation band. Measured S-parameter and radiation efficiency of the two-antenna system. Verify desired performance features and the proposed decoupled antenna displacement scheme is applicable for notebook products.

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