本篇論文採用共振耦合式的線圈架構來設計應用於無線充電系統，該系統以植入性裝置心律調整器作為其應用。線圈以螺線圈架構繞製而成並探討螺線圈的電氣參數隨其物理規格的變化，而系統參考該心律調整器的實體規格來設計四線圈架構進行無線傳能。論文採用反射負載理論(Reflected Load Theory)對多線圈系統等效電路進行分析。根據該理論，同時論文提出一調整耦合的方式來最佳化線圈的功率傳輸效率，該方法提升 5 %至 50 % 不等的功率傳輸效率，整個四線圈架構在裝置操作距離2.0公分到5.0公分下，能達到約為85 %的最佳功率傳輸效率。
接著，論文所提出的四線圈架構結合前端功率放大器與後端整流穩壓電路實現該無線充電系統。前端採用E類架構實現輸出功率為31.8 dBm 且功率附加效率為73 %的功率放大器作為功率源，其輸出功率透過四線圈架構傳輸，而後端採用橋式全波整流器對接收功率作轉換並以降壓式穩壓器對鋰電池HTC-T5555充電。整個系統在裝置應用的距離2.0公分到5.0公分下，透過功率放大器與四線圈架構的結合，接收線圈輸出端能從發射源達到最高62.07 % （平均51.56 %）的效率，以此對鋰電池充電，整個充電時間歷經150分鐘將電池電容量從3% 儲存至87 %。

In this thesis, resonant coupling coils are applied to design wireless charging systems for implantable cardiac pacemakers. The coils are implemented based on helical-type structures and the electrical characteristics of helical coil are investigated based on its physical parameters. The 4-coil systems are designed according to the practical specifications of cardiac pacemaker for wireless power transmission. The reflected load theory is applied to analyze the equivalent circuit of multi-coil system. Based on this theory, an optimization design method and procedure are proposed by adjusting couplings to achieve optimal power transmission efficiency. This method is verified and the measured power transmission efficiency is improved by 5% to 50%, and approximately 85 % of power transmission efficiency can be achieved in the purposed 4-coil system from 2.0 cm to 5.0 cm of the operating distance.
Furthermore, the purposed 4-coil system is integrated into a wireless charging transfer system including the front-end power amplifier in the power source transmitter and a rectifier and a regulator in the back-end power pick-up receiver. From the power source, 31.8 dBm output power and the 73 % of power-added efficiency (PAE) are achieved for the implemented class-E power amplifier. The output power is delivered wirelessly by the purposed 4-coil system. After being received by back-end circuit, the wireless power is converted by a bridge rectifier and then stepped down by a buck regulator to charge the lithium battery (HTC-T5555). By integrating the power amplifier with the 4-coil system, maximally 62.07 % (averagely 51.56 %) of receiving efficiency from the source to the output of the receiving coil is achieved for different operating distances of device from 2.0 cm to 5.0 cm. The system is verified for battery charging and it takes 150 minutes to restore the lithium battery from 3 % to 87 % battery capacity.

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