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Wireless Power Transfer for Autonomous Wearable Neurotransmitter Sensors

Electrical Engineering Department, University of Texas at Arlington, TX 76019, USA
Author to whom correspondence should be addressed.
Academic Editors: Hung Cao and Yu Zhao
Sensors 2015, 15(9), 24553-24572;
Received: 1 August 2015 / Accepted: 18 September 2015 / Published: 23 September 2015
(This article belongs to the Special Issue Power Schemes for Biosensors and Biomedical Devices)
PDF [892 KB, uploaded 23 September 2015]


In this paper, we report a power management system for autonomous and real-time monitoring of the neurotransmitter L-glutamate (L-Glu). A low-power, low-noise, and high-gain recording module was designed to acquire signal from an implantable flexible L-Glu sensor fabricated by micro-electro-mechanical system (MEMS)-based processes. The wearable recording module was wirelessly powered through inductive coupling transmitter antennas. Lateral and angular misalignments of the receiver antennas were resolved by using a multi-transmitter antenna configuration. The effective coverage, over which the recording module functioned properly, was improved with the use of in-phase transmitter antennas. Experimental results showed that the recording system was capable of operating continuously at distances of 4 cm, 7 cm and 10 cm. The wireless power management system reduced the weight of the recording module, eliminated human intervention and enabled animal experimentation for extended durations. View Full-Text
Keywords: wireless power transmission; multi-transmitter antenna; neurotransmitter sensor recorder; L-glutamate sensors wireless power transmission; multi-transmitter antenna; neurotransmitter sensor recorder; L-glutamate sensors

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This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited (CC BY 4.0).

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Nguyen, C.M.; Kota, P.K.; Nguyen, M.Q.; Dubey, S.; Rao, S.; Mays, J.; Chiao, J.-C. Wireless Power Transfer for Autonomous Wearable Neurotransmitter Sensors. Sensors 2015, 15, 24553-24572.

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