Study on Wireless Power Transmission for Gastrointestinal Microsystems Based on Inductive Coupling

查看全文 作　　者：MA Guan-ying YAN Guo-zheng HE [1]Xiu

机构地区：[1]Shanghai Jiao Tong University, Shanghai 200240, China

出　　处：《Chinese Journal of Biomedical Engineering(English Edition)》索引2007年第16卷第2期,共8页

基　　金：National High Technology Research and Development Program of China(863 Program),Grant number:2004AA404013. 摘　　要：Wireless power transmission based on inductive coupling for remotely implanted micro devices has been considered in this paper. The receiving coil, integrated in microsystems and the external transmitting coil compose a loosely coupled transformer. The coupling coefficient was calculated and measured on spacing misalignments. The geometric size of transmitting coil was analyzed for the target of remotely delivering power. The received power was maximized by choosing appropriate value of frequency, tuning capacitance and the load resistance. A conventional full bridge rectifier circuit was employed to convert ac to dc voltage. The received dc power was up to 160 mW with a transmitting voltage of 5 Vrms when the receiving coil was placed at the center of the transmitting coil. This may meet the requirement of some microsystems for high power over a long time. 关键词：能量传递胃肠疾病微型系统生物信息

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Study on Wireless Power Transmission for Gastrointestinal Microsystems Based on Inductive Coupling

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