An efficient inductive power link design for retinal prosthesis

Gurhan Alper Kendir, Wentai Liu, Rizwan Bashirullah, Guoxing Wang, Mark Humayun, James Weiland

研究成果: Conference article同行評審

26 引文 斯高帕斯(Scopus)


This paper presents the design of a highly efficient power link based on class-E driven, inductively coupled coil pair. An optimal power link design for retinal prosthesis and other implants must take into consideration of allowable electric and magnetic fields safety limits, which in turn govern the inductances of the primary and secondary coils. In retinal prosthesis, the optimal coil inductances have to deal with the constraints of the coil sizes, the trade-offs between loss, H-field limitation and the DC supply voltage requirement of the class-E driver. Our design starts with the formation of equivalent circuits, followed by the analysis of the loss of rectifier and coils and -the H-field for induced voltage and current. Both linear and non-linear models for the analysis are presented. Litz wire is used to reduce the winding losses in our analysis. Based on the procedure, an experimental power link is implemented with an overall efficiency of 67% at the optimal distance of 7mm between the coils.

頁(從 - 到)IV-41-IV-44
期刊Proceedings - IEEE International Symposium on Circuits and Systems
出版狀態Published - 2004
事件2004 IEEE International Symposium on Cirquits and Systems - Proceedings - Vancouver, BC, Canada
持續時間: 2004 5月 232004 5月 26

All Science Journal Classification (ASJC) codes

  • 電氣與電子工程


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