Title :
Cellular inductive powering system for weakly-linked resonant rodent implants
Author :
Soltani, Nahid ; Aliroteh, M.S. ; Genov, Roman
Author_Institution :
Dept. of Electr. & Comput. Eng., Univ. of Toronto, Toronto, ON, Canada
fDate :
Oct. 31 2013-Nov. 2 2013
Abstract :
This paper presents a cellular inductive powering system for neural interface devices to facilitate chronic physiological studies. The system delivers 21-225 mW of power to a 4cm×4cm planar receiver with 21.5% efficiency. It is shown that the implemented multi-coil power transmission technique creates 5 times less non-ionizing radiation at 10cm distance than a single-coil design, for equal amounts of delivered power. The design also implements a low-cost technique which tracks the location of the animal using an impedance measurement circuit which is also used to tune the individual coils.
Keywords :
electric impedance measurement; inductive power transmission; neurophysiology; prosthetic power supplies; cellular inductive powering system; chronic physiological study; impedance measurement circuit; multicoil power transmission; neural interface devices; nonionizing radiation; power 21 mW to 22.5 mW; weakly linked resonant rodent implants; Coils; Couplings; Magnetic resonance; Q-factor; Receivers; Rodents;
Conference_Titel :
Biomedical Circuits and Systems Conference (BioCAS), 2013 IEEE
Conference_Location :
Rotterdam
DOI :
10.1109/BioCAS.2013.6679711