A Bidirectional Wireless Link for Neural Prostheses that Minimizes Implanted Power Consumption

Author

Mandal, Soumyajit ; Sarpeshkar, Rahul

Author_Institution

Massachusetts Inst. of Technol., Cambridge

fYear

2007

fDate

27-30 Nov. 2007

Firstpage

45

Lastpage

48

Abstract

We describe a bidirectional impedance-modulation wireless data link for implanted neural prostheses. The link uses near-field inductive coupling between the implanted system and an external transceiver. It is designed to minimize power consumption in the implanted system and support high data rates in the uplink direction (from the implanted to the external system). Experimental results demonstrate data transfer rates up to 5.8 Mbps in the uplink direction and 300 kbps in the downlink direction at a link distance of 2 cm. The link dissipates 100 muW in the implanted system and 2.5 mW in the external system, making it among the most power-efficient inductive data links reported.

Keywords

neurophysiology; power consumption; prosthetics; transceivers; bidirectional impedance-modulation; bidirectional wireless link; bit rate 300 kbit/s; data transfer; distance 2 cm; implanted power consumption; near-field inductive coupling; neural prostheses; power 100 muW; power 2.5 mW; power-efficient inductive data link; transceiver; Batteries; Downlink; Electromagnetic coupling; Energy consumption; Impedance; Phase detection; Phase modulation; Prosthetics; Switches; Transceivers;

fLanguage

English

Publisher

ieee

Conference_Titel

Biomedical Circuits and Systems Conference, 2007. BIOCAS 2007. IEEE

Conference_Location

Montreal, Que.

Print_ISBN

978-1-4244-1524-3

Electronic_ISBN

978-1-4244-1525-0

Type

conf

DOI

10.1109/BIOCAS.2007.4463305

Filename

4463305