Polymer based thin film coils as a power module of wireless neural interfaces

Kim, S.; Buschick, K.; Zoschke, Kai; Klein, M.; Toepper, Michael; Black, D.; Harrison, R.R.; Tathireddy, Prashant; Solzbacher, F.

doi:10.1109/wmed.2006.1678285

Cited by 3 publications

(2 citation statements)

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“…Since a coil will have a maximum Q-factor when the opening in its center is 20-25 % of the coil diameter [5], the inner diameter of power coils was determined to be 1.25 mm. Other geometrical parameters such as the width, spacing, and height of coil turns were determined to achieve high number of windings within the technical limitations (e.g.…”

Section: Design Of Power Coilsmentioning

confidence: 99%

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Switchable polymer-based thin film coils as a power module for wireless neural interfaces

Kim

Zoschke

Klein

et al. 2007

Sensors and Actuators A: Physical

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Reliable chronic operation of implantable medical devices such as the Utah Electrode Array (UEA) for neural interface requires elimination of transcutaneous wire connections for signal processing, powering and communication of the device. A wireless power source that allows integration with the UEA is therefore necessary. While (rechargeable) micro batteries as well as biological micro fuel cells are yet far from meeting the power density and lifetime requirements of an implantable neural interface device, inductive coupling between two coils is a promising approach to power such a device with highly restricted dimensions. The power receiving coils presented in this paper were designed to maximize the inductance and quality factor of the coils and microfabricated using polymer based thin film technologies. A flexible configuration of stacked thin film coils allows parallel and serial switching, thereby allowing to tune the coil's resonance frequency. The electrical properties of the fabricated coils were characterized and their power transmission performance was investigated in laboratory condition.

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Section: Design Of Power Coilsmentioning

confidence: 99%

“…Taking into account simulation results [5], technological considerations, and the device assembly process [6], six different coil designs were manufactured. The coils were fabricated using the biocompatible materials such as gold and polyimide.…”

Section: Coil Fabricationmentioning

confidence: 99%