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Study of mm-sized Coil to Coil Backscatter Based Communication Link

  • Stony Brook University

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

3 Scopus citations

Abstract

Distribution of a large number of mm-sized sensing units in brain is a vision for the next generation of implantable devices for neural recording. Recorded data from the implants is conventionally transferred to a central external device and the bandwidth of the uplink channel is limited by the number of the implanted units. For the first time, we demonstrate the feasibility of local communication between mm-sized coils using backscattering technique which promises to reduce the requirement on the uplink bandwidth between the external device and the implants. To demonstrate the feasibility of the proposed link, two implanted coils located at 14 mm implantation depth are used with the distance between coils of 1.5 mm. The transmitting coil switches between two terminating impedance and the input voltage at the receiving coil is observed in the simulations with a triple-loop inductive link designed at 90 MHz. We show that the voltage difference in the received signal for two transmitting states can be resolved by demodulator of the receiving implant demonstrating the link feasibility. Several simulations show the functionality of the link under wide range of different angular and lateral misalignment.

Original languageEnglish
Title of host publication2019 IEEE 10th Annual Ubiquitous Computing, Electronics and Mobile Communication Conference, UEMCON 2019
EditorsSatyajit Chakrabarti, Himadri Nath Saha
PublisherInstitute of Electrical and Electronics Engineers Inc.
Pages1124-1129
Number of pages6
ISBN (Electronic)9781728138855
DOIs
StatePublished - Oct 2019
Event10th IEEE Annual Ubiquitous Computing, Electronics and Mobile Communication Conference, UEMCON 2019 - New York City, United States
Duration: Oct 10 2019Oct 12 2019

Publication series

Name2019 IEEE 10th Annual Ubiquitous Computing, Electronics and Mobile Communication Conference, UEMCON 2019

Conference

Conference10th IEEE Annual Ubiquitous Computing, Electronics and Mobile Communication Conference, UEMCON 2019
Country/TerritoryUnited States
CityNew York City
Period10/10/1910/12/19

Keywords

  • backscattered signal
  • implantable devices
  • inductive coupling
  • mm-sized coils
  • Wireless data communication

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