1 Scopus citations

Abstract

A fully-passive and wireless neurosensing system is presented for acquisition of very-low-power brain signals. The system can detect neuropotentials as low as 50μVpp in frequency-domain. This is an improvement of up to 22dB in sensitivity compared to previously reported neuropotentials. Importantly, it implies reading of most known and useful brain signals. Currently, the system can also recover neuropotentials down to 200μVpp in time-domain. This remarkable sensitivity is enabled by: (a) an anti-parallel diode pair (APDP) implanted mixer that performs harmonic mixing with high conversion efficiency, and (b) a pair of highly-coupled interrogator and implanted antennas. The proposed neurosensing system creates transformational health-status monitoring possibilities for a very wide range of applications.

Original languageEnglish (US)
Title of host publicationConference Proceedings - 2014 IEEE MTT-S International Microwave Workshop Series on
Subtitle of host publicationRF and Wireless Technologies for Biomedical and Healthcare Applications, IMWS-Bio 2014
PublisherInstitute of Electrical and Electronics Engineers Inc.
ISBN (Electronic)9781479954476
DOIs
StatePublished - Feb 5 2015
Event2014 IEEE MTT-S International Microwave Workshop Series on RF and Wireless Technologies for Biomedical and Healthcare Applications, IMWS-Bio 2014 - London, United Kingdom
Duration: Dec 8 2014Dec 10 2014

Publication series

NameConference Proceedings - 2014 IEEE MTT-S International Microwave Workshop Series on: RF and Wireless Technologies for Biomedical and Healthcare Applications, IMWS-Bio 2014

Other

Other2014 IEEE MTT-S International Microwave Workshop Series on RF and Wireless Technologies for Biomedical and Healthcare Applications, IMWS-Bio 2014
CountryUnited Kingdom
CityLondon
Period12/8/1412/10/14

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Keywords

  • Anti-parallel diode pair (APDP)
  • brain implant
  • neuropotential
  • neurosensing
  • passive
  • sub-harmonic mixing
  • wireless medical telemetry

ASJC Scopus subject areas

  • Computer Networks and Communications
  • Computer Science Applications
  • Electrical and Electronic Engineering
  • Health Informatics

Cite this

Lee, C., Kiourti, A., Chae, J., & Volakis, J. L. (2015). Fully-passive and wireless detection of very-low-power brain signals. In Conference Proceedings - 2014 IEEE MTT-S International Microwave Workshop Series on: RF and Wireless Technologies for Biomedical and Healthcare Applications, IMWS-Bio 2014 [7032393] (Conference Proceedings - 2014 IEEE MTT-S International Microwave Workshop Series on: RF and Wireless Technologies for Biomedical and Healthcare Applications, IMWS-Bio 2014). Institute of Electrical and Electronics Engineers Inc.. https://doi.org/10.1109/IMWS-BIO.2014.7032393