A Study of Multi-Layer Spiral Inductors for Remote Powering of Implantable Sensors

An approach based on multi-layer spiral inductors to remotely power implantable sensors is investigated. As compared to single-layer inductors having the same area, multi-layer printed inductors enable a higher efficiency (up to 35% higher) and voltage gain (almost one order of magnitude higher). A system conceived to be embedded into a skin patch is designed to verify the performance. The system is able to transmit up to 15 mW over a distance of 6 mm and up to 1.17 mW where a 17 mm beef sirloin is placed between the inductors. Furthermore, the system performs downlink communication (up to 100 kbps) and uplink communication based on the backscattering technique (up to 66.6 kbps). Long-range communication is achieved by means of a bluetooth module.


Published in:
IEEE Transactions on Biomedical Circuits and Systems, 7, 4, 536-547
Year:
2013
Publisher:
Piscataway, Ieee-Inst Electrical Electronics Engineers Inc
Keywords:
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 Record created 2013-10-01, last modified 2018-03-17

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