Far-field RF powering of implantable devices: Safety considerations

Rebecca A. Bercich; Daniel R. Duffy; Pedro P. Irazoqui

doi:10.1109/TBME.2013.2246787

Far-field RF powering of implantable devices: Safety considerations

Rebecca A. Bercich, Daniel R. Duffy, Pedro P. Irazoqui

Research output: Contribution to journal › Article › peer-review

Abstract

Far-field RF powering is an attractive solution to the challenge of remotely powering devices implanted in living tissue. The purpose of this study is to characterize the peak obtainable power levels in a wireless myoelectric sensor implanted in a patient while maintaining safe local temperature and RF powering conditions. This can serve as a guide for the design of onboard electronics in related medical implants and provide motivation for more efficient power management strategies for implantable integrated circuits. Safe powering conditions and peak received power levels are established using a simplified theoretical analysis and Federal Communications Commission- established limits for radiating antennas. These conditions are subsequently affirmed and improved upon using the finite-element method and temperature modeling in bovine muscle.

Original language	English (US)
Article number	6461073
Pages (from-to)	2107-2112
Number of pages	6
Journal	IEEE Transactions on Biomedical Engineering
Volume	60
Issue number	8
DOIs	https://doi.org/10.1109/TBME.2013.2246787
State	Published - 2013
Externally published	Yes

Keywords

Far field
implantable
intramuscular
myoelectric
RF powering
sensors
specific absorption rate (SAR)
wireless

ASJC Scopus subject areas

Biomedical Engineering

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10.1109/TBME.2013.2246787

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title = "Far-field RF powering of implantable devices: Safety considerations",

abstract = "Far-field RF powering is an attractive solution to the challenge of remotely powering devices implanted in living tissue. The purpose of this study is to characterize the peak obtainable power levels in a wireless myoelectric sensor implanted in a patient while maintaining safe local temperature and RF powering conditions. This can serve as a guide for the design of onboard electronics in related medical implants and provide motivation for more efficient power management strategies for implantable integrated circuits. Safe powering conditions and peak received power levels are established using a simplified theoretical analysis and Federal Communications Commission- established limits for radiating antennas. These conditions are subsequently affirmed and improved upon using the finite-element method and temperature modeling in bovine muscle.",

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AB - Far-field RF powering is an attractive solution to the challenge of remotely powering devices implanted in living tissue. The purpose of this study is to characterize the peak obtainable power levels in a wireless myoelectric sensor implanted in a patient while maintaining safe local temperature and RF powering conditions. This can serve as a guide for the design of onboard electronics in related medical implants and provide motivation for more efficient power management strategies for implantable integrated circuits. Safe powering conditions and peak received power levels are established using a simplified theoretical analysis and Federal Communications Commission- established limits for radiating antennas. These conditions are subsequently affirmed and improved upon using the finite-element method and temperature modeling in bovine muscle.

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Far-field RF powering of implantable devices: Safety considerations

Abstract

Keywords

ASJC Scopus subject areas

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