本論文提出一種應用於筆記型電腦之緊湊型雙天線 Wi-Fi 6E/7 MIMO 隔離度增強設計，涵蓋頻段為 2.4 GHz (2.4–2.5GHz) 、5 GHz (5.15–5.85 GHz) 及 6 GHz (5.925–7.125 GHz) 。本研究旨在於有限的出風口配置空間下，達成涵蓋上述三個頻段且具備良好隔離度之雙天線 MIMO 系統，以滿足現代筆記型電腦對高效能無線通訊之需求。
本設計將天線配置於筆記型電腦之出風口區域，利用出風口兩側金屬腔體壁之屏蔽效應阻隔機體內部之電磁干擾，並引導輻射能量向外集中。雙天線採用結構相同、指向相異之非對稱配置，主天線與副天線皆以饋入線搭配寄生元件之耦合結構激發多頻諧振。二者之差異僅在於饋入支路與寄生支路之相對指向：於主天線中，兩支路呈反向排列；於副天線中，兩支路則呈相向配置。藉此非對稱配置，雙天線得以於同一緊湊空間內涵蓋 2.4 GHz、5 GHz 與 6 GHz 三頻段。此外，於兩天線之間導入去耦枝節 (decoupling stub) 以抑制天線間之互耦，使 5 GHz 與 6 GHz 頻段之隔離度均達 15 dB 以上。
天線設計與參數最佳化使用 CST Microwave Studio 進行模擬，並製作原型天線進行量測驗證。結果顯示，本雙天線系統於各頻段皆具備良好之阻抗匹配，部分頻段之隔離度亦達 15 dB 以上，峰值增益介於 3 至 9 dBi，天線效率介於 33% 至 66%，符合 MIMO 系統之應用需求。此外，本研究亦建立模擬環境進行驗證，結果證實天線配置於出風口區域時，兼具結構緊湊與良好輻射效能之優勢。

This thesis presents a compact dual-antenna MIMO system with enhanced isolation for Wi-Fi 6E/7 applications, deployed in the heat-dissipation vent region of a laptop computer and covering the 2.4 GHz (2.4–2.5 GHz), 5 GHz (5.15–5.85 GHz), and 6 GHz (5.925–7.125 GHz) bands. The vent, located at the junction of the keyboard top cover and the bottom cover, inherently forms a closed metal slot that is directly employed as the radiating element, without cutting any additional aperture into the chassis. A 96.5 mm × 4.1 mm closed slot is shared by two exciters printed on a 105 mm × 8.9 mm × 0.2 mm FR-4 substrate (relative permittivity 4.4, loss tangent 0.025) and fed through 1.13 mm-diameter low-loss coaxial cables. The two antennas are structurally identical but asymmetrically oriented, and a decoupling stub is introduced between them to suppress mutual coupling. The measured isolation exceeds 15 dB throughout the 5 GHz and 6 GHz bands, with realized gains of approximately 3–9 dBi and efficiencies of about 33%–66%.

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