Title :
Powering Implantable Telemetry Devices from Localized Magnetic Fields
Author :
McCormick, D. ; Hu, Aiguo Patrick ; Nielsen, P.D. ; Malpas, S. ; Budgett, David
Author_Institution :
Univ. of Auckland, Auckland
Abstract :
This paper presents a novel method of inductively powering an implantable telemetry device over a large area. The system is based around an array of individually tuned series resonant circuits distributed across a charging pad. By varying the frequency of the driving voltage, the location of the charging field is changed. Presented are a method of controlling the resonant frequency and techniques for determining the geometry of the charging pad. Results from a nine coil system operating between 97 kHz and 209 kHz are given which can deliver 100 mW to an implanted telemeter at a height of 5 cm above the charging pad.
Keywords :
biomedical electronics; biomedical telemetry; power electronics; resonant invertors; charging pad; frequency 97 kHz to 209 kHz; implantable telemetry devices; inductively coupled power transfer; localized magnetic fields; power 100 mW; resonant frequency; resonant inverter; series resonant circuits; Animals; Biomedical engineering; Biomedical monitoring; Coils; Induction generators; Magnetic fields; Magnetic levitation; Plastics; Resonant frequency; Telemetry; Algorithms; Animals; Computers; Electric Power Supplies; Electrodes, Implanted; Electromagnetic Fields; Equipment Design; Humans; Magnetics; Mice; Models, Statistical; Monitoring, Ambulatory; Prostheses and Implants; Reproducibility of Results; Telemetry;
Conference_Titel :
Engineering in Medicine and Biology Society, 2007. EMBS 2007. 29th Annual International Conference of the IEEE
Conference_Location :
Lyon
Print_ISBN :
978-1-4244-0787-3
DOI :
10.1109/IEMBS.2007.4352793
