Battery-less implantable medical devices (IMDs) are encountering an always growing interest in recent years. The ability to monitor body-organs activities using electrical stimulators requires the establishment of a Data Down-Link, while a Data Up-Link is an ubiquitous feature to monitor health conditions by acquiring biological signals. Under this scenario, this work deals with the design and the simulations of a Fully-Digital Binary Phase-Shift Keying (BPSK) demodulator for the Downlink in Ultrasound (US)-powered IMDs. The system presents low area occupation, ultra-low power consumption down to 1.25 µ W. It is implemented in a 28-nm bulk CMOS technology provided by TSMC. Its data rate rises up 2 Mbit/s and a minimum energy-per-bit equals to 0.63 pJ/bit.

A 0.63 pJ/bit Fully-Digital BPSK Demodulator for US-powered IMDs downlink in a 28-nm bulk CMOS technology

Privitera M.
Primo
;
Ballo A.;Grasso A. D.
2022-01-01

Abstract

Battery-less implantable medical devices (IMDs) are encountering an always growing interest in recent years. The ability to monitor body-organs activities using electrical stimulators requires the establishment of a Data Down-Link, while a Data Up-Link is an ubiquitous feature to monitor health conditions by acquiring biological signals. Under this scenario, this work deals with the design and the simulations of a Fully-Digital Binary Phase-Shift Keying (BPSK) demodulator for the Downlink in Ultrasound (US)-powered IMDs. The system presents low area occupation, ultra-low power consumption down to 1.25 µ W. It is implemented in a 28-nm bulk CMOS technology provided by TSMC. Its data rate rises up 2 Mbit/s and a minimum energy-per-bit equals to 0.63 pJ/bit.
2022
978-1-6654-6700-1
BPSK modulation
energy harvesting
implanted medical devices
ultra-low-power
ultrasonic link
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/20.500.11769/535398
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