A passive telemetry interface system with closed-loop power control function for body-implanted applications

Koji Kiyoyama, Yoshito Tanaka, Masahiro Onoda, Tetsu Tanaka, Mitsumasa Koyanagi

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

2 Citations (Scopus)

Abstract

In this paper, we propose a passive telemetry interface system for a body-implanted chip with a closed-loop power control function, which keeps the chip temperature at the allowable level for human body. The system is controlled by monitoring an excessive current at the implanted chip and limiting the power supply at the external interrogator unit. Power consumption of the current monitor circuit implemented in 0.18μm standard CMOS technology is lower than 35μW with a 1.8V power supply. Experimental results of the closed-loop power control system confirm its expected features of a detecting current of 150μA at a distance between the transponder and the interrogator less than 10mm.

Original languageEnglish
Title of host publicationConference Proceedings - IEEE Biomedical Circuits and Systems Conference Healthcare Technology, BiOCAS2007
Pages37-40
Number of pages4
DOIs
Publication statusPublished - 2007
EventIEEE Biomedical Circuits and Systems Conference Healthcare Technology, BiOCAS2007 - Montreal, QC, Canada
Duration: 2007 Nov 272007 Nov 30

Publication series

NameConference Proceedings - IEEE Biomedical Circuits and Systems Conference Healthcare Technology, BiOCAS2007

Other

OtherIEEE Biomedical Circuits and Systems Conference Healthcare Technology, BiOCAS2007
CountryCanada
CityMontreal, QC
Period07/11/2707/11/30

Keywords

  • Biomedical telemetry
  • CMOS
  • Closed-loop power control
  • Electrocardiograph sensor
  • Implantable chip
  • Inductive link
  • Low power
  • Wireless interface
  • Wireless power transmission

ASJC Scopus subject areas

  • Hardware and Architecture
  • Biomedical Engineering

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