Enabling Batteryless Wearables and Implants
Keywords:
Batteryless, implants, power harvesting, RF backscattering, wearables, wireless poweringAbstract
Powering of wearables and implants is a critical challenge. Conventional batteries are rigid and require frequent recharging and/or replacement, making their use cumbersome and obtrusive for body-area applications. Instead, this paper discusses three novel technologies that our group has recently explored toward batteryless wearables and implants, viz. a) DC power generation using fabric electrochemistry, b) Radio-Frequency (RF) power harvesting, and c) fully-passive RF backscattering. Notably, the proposed technologies bring forward transformational possibilities for batteryless sensing and/or stimulation.
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References
S. C. Mukhopadhyay, “Wearable sensors for human activity monitoring: A review,” IEEE Sensors J., vol. 15, no. 3, pp. 1321-1330, 2015.
J. Li, et al., “Characterization of in-body radio channels for wireless implants,” IEEE Sensors J., vol. 17, no. 5, pp. 1528-1537, 2017.
R. Bala, R. Singh, A. Marwaha, and S. Marwaha, “Wearable graphene-based curved patch antenna for medical telemetry applications,” ACES Journal, vol. 31, no. 5, 2016.
A. Sabban, “Small wearable metamaterials antennas for medical systems,” ACES Journal, vol. 31, no. 4, 2016.
Y. Xu, Y. Lan, Y. Qiu, and R. Xu, “Compact implantable rectenna with light-emitting diode for implantable wireless optogenetics,” ACES Journal, vol. 31, no. 6, 2016.
R. Vilkhu, et al., “Power harvesting for wearable electronics using fabric electrochemistry,” 2017 IEEE Int. Symp. Antennas Propog., San Diego, CA, 2017.
R. Vilkhu, et al., “Power generation for wearable electronics: Designing electrochemical storage on fabrics,” IEEE Access, 2018.
B. DeLong, C. C. Chen, and J. L. Volakis, “Wireless energy harvesting for medical applications,” 2015 IEEE Int. Symp. Antennas Propag., Vancouver, BC, 2015.
B. DeLong, A. Kiourti, and J. L. Volakis, “A 2.4- GHz wireless sensor network using single diode rectennas,” 2016 IEEE Int. Symp. Antennas Propag., Fajardo, Puerto Rico, 2016.
R. R. Harrison, “The design of integrated circuits to observe brain activity,” Proc. IEEE, vol. 96, no. 7, pp. 12031216, July 2008.
A. Kiourti, C. W. L. Lee, J. Chae, and J. L. Volakis, “A wireless fully-passive neural recording device for unobtrusive neuropotential monitoring,” IEEE Trans. Biomed. Eng., vol. 63, no. 1, pp. 131-137, Jan. 2016.
W. L. Lee, A. Kiourti, and J. L. Volakis, “Miniaturized fully-passive brain implant for wireless neuropotential acquisition,” IEEE Antennas and Wireless Propag. Lett., vol. 16, pp. 645648, 2017.