Title :
An efficient wireless power link for neural implant
Author :
Jegadeesan, Rangarajan ; Yong-Xin Guo ; Rui-Feng Xue ; Minkyu Je
Author_Institution :
Nat. Univ. of Singapore, Singapore, Singapore
Abstract :
An efficient resonant tuned wireless power transfer (WPT) link using inductive coupling has been proposed for the neural implant application in this work. The power link is optimized for an operating frequency of 10 MHz using coil, load and frequency optimization. The lossy tissue model was used to mimic the power loss in tissue and the simulated (HFSS) peak SAR values were within the allowed limit for 20 mW power received at implant. The power transfer efficiency for implant coil sizes of 250 mm2 for a power transmit range of 10 mm was simulated using HFSS to be around 82%.
Keywords :
biological tissues; biomedical electronics; coils; neurophysiology; optimisation; prosthetics; efficient resonant tuned wireless power transfer link; efficient wireless power link; frequency 10 MHz; frequency optimization; implant coil sizes; inductive coupling; load optimization; lossy tissue model; neural implant application; power 20 mW; power loss; power transfer efficiency; power transmit range; Coils; Couplings; Implants; Receivers; Resonant frequency; Scalp; Wireless communication; inductive coupling; neural implant; resonant tuning; wireless power transfer;
Conference_Titel :
Radio-Frequency Integration Technology (RFIT), 2012 IEEE International Symposium on
Conference_Location :
Singapore
Print_ISBN :
978-1-4673-2303-1
DOI :
10.1109/RFIT.2012.6401634
