HF頻段之無線充電系統的天線與電路之設計

DESIGN OF A WIRELESS CHARGING SYSTEM COMPOSITED OF ANTENNA AND CIRCUITS IN HF BAND

翁漁渭(Yu-Wei Weng)

指導教授 ： 黃啟芳

大同大學/電機資訊學院/電機工程學系所/碩士(2012年)

摘要

本文中所討論的無線充電架構是利用HF band(13.56MHz)當諧振頻率製作出傳送端及接收端的環形天線，透過訊號產生器及功率放大器當發射端將能量傳送出去，並在距離10mm遠的地方藉由接收端的環形天線透過橋式整流電路將能量接收下來，並經由充電電路對手機或鋰電池進行充電。文中將提到天線是如何設計如何做到共軛匹配，整流電路及充電電路如何設計，並透過實際應用在鋰電池充電上來驗證此設計方法的可行性。
為了達到當接收端物件(例如手機)放在傳送端平台時，接收端物件從傳送端平台每一處所接收的能量都要差不多，且能達到充電的效果，我們在天線設計上用了陣列的方式，期望可以達到傳送端的磁場最佳化及均勻化。最後，透過CST磁場模擬及實際應用的測試數據來驗證結果是否符合我們預期。

關鍵字

無線充電 ； 13.56MHz 環型天線

並列摘要

The framework of wireless charging in this thesis is to use HF band (13.56MHz) as its resonance frequency to produce loop antenna in transmission and receiving side. By using a signal generator and a power amplifier to transmit the power energy from transmission side and receiving the power energy by the loop antenna of receiver side which is about 10mm distance from transmission side, the receiver side would receive the power energy through the bridge-rectifier circuit and put it through charging circuit to charge mobile or Li-ion battery. This thesis would discuss how to impedance complex conjugate and introduce design methods of rectifying and charging circuit. In practice, we will apply our charging device to charge Li-ion battery to verify if the design correct.
To ensure the receiver object (such as mobile phone) on the transmission platform to receiver the energy from each point of transmission platform uniformly, we design a coil array. Finally, we use CST software to simulate the magnetic field and measure the voltage data from our charging board to verify if the result of experiment can match our expectation for the original design.

並列關鍵字

Wireless charging ； 13.56MHz loop antenna

參考文獻

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