Misalignment analysis of resonance-based wireless power transfer to biomedical implants

Author

Senjuti, S. ; Fricke, Kyle ; Dounavis, Anestis ; Sobot, Robert

Author_Institution

Dept. of Electr. & Comput. Eng., Univ. of Western Ontario, London, ON, Canada

fYear

2012

fDate

April 29 2012-May 2 2012

Firstpage

1

Lastpage

5

Abstract

We present a power transfer sensitivity analysis of a four-coil resonance-based wireless power delivery system that is used to provide energy to a small-size biotelemetry system implanted into non-human freely moving subjects. Both axial and angular misalignments have been evaluated, with calculations for the worst-case misalignment of 15mm axial distance and 50° angular separation for a minimum constant power supply of 0.5mW in the load resistor. Analytical results have been validated with electromagnetic field simulations. Discrete level design of a wirelessly powered implant incorporating this analysis is also presented.

Keywords

biomedical telemetry; prosthetics; angular misalignment; angular separation; axial distance; axial misalignment; biomedical implant; discrete level design; electromagnetic field simulation; four-coil resonance; misalignment analysis; power 0.5 mW; power transfer sensitivity analysis; resonance-based wireless power transfer; small-size biotelemetry system; wireless power delivery system; Coils; Couplings; Implants; Inductors; Integrated circuit modeling; Wireless communication; Wireless sensor networks; Wireless power transfer; biomedical implants; coil misalignment; resonance-based power delivery;

fLanguage

English

Publisher

ieee

Conference_Titel

Electrical & Computer Engineering (CCECE), 2012 25th IEEE Canadian Conference on

Conference_Location

Montreal, QC

ISSN

0840-7789

Print_ISBN

978-1-4673-1431-2

Electronic_ISBN

0840-7789

Type

conf

DOI

10.1109/CCECE.2012.6334898

Filename

6334898