An RF-Powered FDD Radio for Neural Microimplants

We present a radio system that could be used in millimeter-scale wireless neural implants. The system is RF-powered and demonstrates Mbps data rates required for neuromodulation and recording applications. The radio transmits at 58 Mb/s and receives at 2.5 Mb/s maximum data rates. The transceiver us...

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Bibliographic Details
Published in:IEEE journal of solid-state circuits 2017-05, Vol.52 (5), p.1221-1229
Main Authors: Rajavi, Yashar, Taghivand, Mazhareddin, Aggarwal, Kamal, Ma, Andrew, Poon, Ada S. Y.
Format: Article
Language:English
Subjects:
Batteries
Biomedical telemetry
CMOS
Downlink
energy harvesting
Frequency modulation
Implants
microelectronic implants
Neural prostheses
neural prosthesis
Power consumption
Radio frequency
radio transceivers
Receivers
Transceivers
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Summary:We present a radio system that could be used in millimeter-scale wireless neural implants. The system is RF-powered and demonstrates Mbps data rates required for neuromodulation and recording applications. The radio transmits at 58 Mb/s and receives at 2.5 Mb/s maximum data rates. The transceiver uses a duplexer to achieve full-duplex communication via frequency-division duplexing at 1.74 and 1.86 GHz for TX and RX, respectively. The average power consumption of the transmitter is 93 μW at 58 Mb/s, while that of the receiver is 7.2 μW at 2.5 Mb/s. The transceiver was fabricated using 40-nm LP CMOS process and occupies 0.8 mm 2 of die area. Including the off-chip duplexer, the system occupies 2 × 1.6 × 0.6 mm 3 .
ISSN:0018-9200
1558-173X
DOI:10.1109/JSSC.2016.2645601