An Energy-efficient Wirelessly Powered Millimeter-scale Neurostimulator with Optimized Inductive Loop Antenna and Custom Rectifier

Hongming Lyu, Jigong Wang, Jun-Ho La, Jin Chung, Aydin Babakhani

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

This paper presents a wirelessly powered millimeter-scale neurostimulator based on an integrated circuit (IC) that is co-designed with an inductive loop antenna. The circuit uses a positive feedback to generate output stimuli eliminating the need for any control blocks. Low-voltage and high-voltage versions of the circuit are discussed, which can generate 1 V and 2 V stimulation intensities, respectively. The low-voltage design is implemented in a 180 nm CMOS process and occupies an area of 1 mm x 0.2 mm (including pads). A systematic co-design procedure is presented to optimize the rectifier and the inductive loop antenna, rendering the stimulator assembly to occupy an area of 5 mm x 7.5 mm. The stimulator was fully implanted on a rat sciatic nerve 2 cm under the skin and successfully excited the axons. A multi-receiver energy transfer system is further presented targeting future in-body sensor networks.

Original languageEnglish (US)
Title of host publicationProceedings of the 2018 IEEE/MTT-S International Microwave Symposium, IMS 2018
PublisherInstitute of Electrical and Electronics Engineers Inc.
Pages1401-1404
Number of pages4
Volume2018-June
ISBN (Print)9781538650677
DOIs
StatePublished - Aug 17 2018
Event2018 IEEE/MTT-S International Microwave Symposium, IMS 2018 - Philadelphia, United States
Duration: Jun 10 2018Jun 15 2018

Other

Other2018 IEEE/MTT-S International Microwave Symposium, IMS 2018
CountryUnited States
CityPhiladelphia
Period6/10/186/15/18

Fingerprint

loop antennas
Loop antennas
rectifiers
low voltage
axons
positive feedback
nerves
Electric potential
stimulation
Body sensor networks
stimuli
rats
integrated circuits
high voltages
CMOS
Networks (circuits)
receivers
assembly
energy transfer
Energy transfer

Keywords

  • implantable medical device
  • inductive coupling
  • neurostimulator
  • rectifier
  • wireless power transfer

ASJC Scopus subject areas

  • Radiation
  • Condensed Matter Physics
  • Electrical and Electronic Engineering

Cite this

Lyu, H., Wang, J., La, J-H., Chung, J., & Babakhani, A. (2018). An Energy-efficient Wirelessly Powered Millimeter-scale Neurostimulator with Optimized Inductive Loop Antenna and Custom Rectifier. In Proceedings of the 2018 IEEE/MTT-S International Microwave Symposium, IMS 2018 (Vol. 2018-June, pp. 1401-1404). [8439143] Institute of Electrical and Electronics Engineers Inc.. https://doi.org/10.1109/MWSYM.2018.8439143

An Energy-efficient Wirelessly Powered Millimeter-scale Neurostimulator with Optimized Inductive Loop Antenna and Custom Rectifier. / Lyu, Hongming; Wang, Jigong; La, Jun-Ho; Chung, Jin; Babakhani, Aydin.

Proceedings of the 2018 IEEE/MTT-S International Microwave Symposium, IMS 2018. Vol. 2018-June Institute of Electrical and Electronics Engineers Inc., 2018. p. 1401-1404 8439143.

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Lyu, H, Wang, J, La, J-H, Chung, J & Babakhani, A 2018, An Energy-efficient Wirelessly Powered Millimeter-scale Neurostimulator with Optimized Inductive Loop Antenna and Custom Rectifier. in Proceedings of the 2018 IEEE/MTT-S International Microwave Symposium, IMS 2018. vol. 2018-June, 8439143, Institute of Electrical and Electronics Engineers Inc., pp. 1401-1404, 2018 IEEE/MTT-S International Microwave Symposium, IMS 2018, Philadelphia, United States, 6/10/18. https://doi.org/10.1109/MWSYM.2018.8439143
Lyu H, Wang J, La J-H, Chung J, Babakhani A. An Energy-efficient Wirelessly Powered Millimeter-scale Neurostimulator with Optimized Inductive Loop Antenna and Custom Rectifier. In Proceedings of the 2018 IEEE/MTT-S International Microwave Symposium, IMS 2018. Vol. 2018-June. Institute of Electrical and Electronics Engineers Inc. 2018. p. 1401-1404. 8439143 https://doi.org/10.1109/MWSYM.2018.8439143
Lyu, Hongming ; Wang, Jigong ; La, Jun-Ho ; Chung, Jin ; Babakhani, Aydin. / An Energy-efficient Wirelessly Powered Millimeter-scale Neurostimulator with Optimized Inductive Loop Antenna and Custom Rectifier. Proceedings of the 2018 IEEE/MTT-S International Microwave Symposium, IMS 2018. Vol. 2018-June Institute of Electrical and Electronics Engineers Inc., 2018. pp. 1401-1404
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