TY - GEN
T1 - A passive telemetry interface system with closed-loop power control function for body-implanted applications
AU - Kiyoyama, Koji
AU - Tanaka, Yoshito
AU - Onoda, Masahiro
AU - Tanaka, Tetsu
AU - Koyanagi, Mitsumasa
PY - 2007
Y1 - 2007
N2 - 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.
AB - 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.
KW - Biomedical telemetry
KW - Closed-loop power control
KW - CMOS
KW - Electrocardiograph sensor
KW - Implantable chip
KW - Inductive link
KW - Low power
KW - Wireless interface
KW - Wireless power transmission
UR - http://www.scopus.com/inward/record.url?scp=67649918659&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=67649918659&partnerID=8YFLogxK
U2 - 10.1109/BIOCAS.2007.4463303
DO - 10.1109/BIOCAS.2007.4463303
M3 - Conference contribution
AN - SCOPUS:67649918659
SN - 142441525X
SN - 9781424415250
T3 - Conference Proceedings - IEEE Biomedical Circuits and Systems Conference Healthcare Technology, BiOCAS2007
SP - 37
EP - 40
BT - Conference Proceedings - IEEE Biomedical Circuits and Systems Conference Healthcare Technology, BiOCAS2007
T2 - IEEE Biomedical Circuits and Systems Conference Healthcare Technology, BiOCAS2007
Y2 - 27 November 2007 through 30 November 2007
ER -