本論文提出可應用於手持式裝置之近場通訊(Near Field Communication, NFC) 與無線傳能射頻天線設計，其中除了探討天線設計外，亦包含感應頻率量測技術。研究成果除了能夠應用於13.56MHz之NFC系統讀卡器模式、卡片模式以及點對點模式三種功能外，亦可使用於100kHz之無線充電系統。於天線設計方面，由於13.56MHz之近場通訊系統運作原理是於短距離內利用天線間磁場耦合傳遞能量，因此本論文採用繞線圈方式產生感性之阻抗，並搭配後端容性匹配電路，使整體耦合線圈電路於13.56MHz附近可產生一共振頻率。另外，於無線傳能天線設計方面，本論文亦採用磁感應之方式於短距離內傳輸能量，因此也採用繞線圈之方式產生感性之阻抗，並藉由匹配電路於100kHz附近產生一共振頻率。此外，為了使設計易於整合至手持式裝置中，本論文使用PCB共平面設計，並且於裝置與天線之間置入一鐵氧體片，以避免手持式裝置之金屬部分影響天線之效能。本論文於天線設計與電路分析上進行了詳細的模擬與分析，並且由實作量測驗證所設計天線之效能。

A combination of Near Field Communication antenna with wireless charging coil for mobile devices is proposed, including NFC antenna design and analysis, wireless charging coil design and analysis, and induced frequency measurement. Using this structure, users can make use of the three functions of 13.56 MHz NFC system, such as reader mode, card mode, and peer-to-peer mode. In addition, it also provides wireless charging function for mobile devices. The NFC spiral-shaped antenna uses magnetic field to transmit power in short range. The capacitive matching circuit is also added to achieve the desired resonance frequency around 13.56MHz. On the other hand, the function of the wireless charging system is to use magnetic induced method to provide energy in short range. The spiral-shaped coil design proposed creates inductive impedance which is associated with the matching circuit to generate a resonance frequency around 100kHz. Moreover, the PCB coplanar design is employed to integrate our design into mobile devices. Also, the ferrite sheet between the antenna and the metal part prevents the eddy current. Simulated and measured results will be presented and analyzed.

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