High-efficiency wireless power transfer for biomedical implants by optimal resonant load transformation

Rui Feng Xue, Kuang Wei Cheng, Minkyu Je

研究成果: Article同行評審

289 引文 斯高帕斯(Scopus)

摘要

Wireless power transfer provides a safe and robust way for powering biomedical implants, where high efficiency is of great importance. A new wireless power transfer technique using optimal resonant load transformation is presented with significantly improved efficiency at the cost of only one additional chip inductor component. The optimal resonant load condition for the maximized power transfer efficiency is explained. The proposed technique is implemented using printed spiral coils with discrete surface mount components at 13.56 MHz power carrier frequency. With an implantable coil having an area of 25 mm ×,10 mm and a thickness of 0.5 mm, the power transfer efficiency of 58% is achieved in the tissue environment at 10-mm distance from the external coil. Compared to previous works, the power efficiency is much higher and the structure is compact with planar integration, easy to tune, and suitable for batch production, as well as biocompatible owing to no incorporation of ferromagnetic core.

原文English
文章編號6257504
頁(從 - 到)867-874
頁數8
期刊IEEE Transactions on Circuits and Systems I: Regular Papers
60
發行號4
DOIs
出版狀態Published - 2013

All Science Journal Classification (ASJC) codes

  • 電氣與電子工程

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