DocumentCode :
2666743
Title :
A full digital low power dpsk demodulator and clock recovery circuit for high data rate neural implants
Author :
Ghenim, Aymen ; Ghorbel, Mohamed ; Ben Hamida, Ahmed
Author_Institution :
Electr. Eng. Dept., Nat. Eng. Sch. of Sfax, Sfax, Tunisia
fYear :
2010
fDate :
12-15 Dec. 2010
Firstpage :
571
Lastpage :
574
Abstract :
A novel full digital and non-coherent DPSK demodulator is presented for inductively powered biomedical systems. The transmitter uses differential phase encoding technique that requires in the demodulation, a precise symbol clock recovery. This was achieved by the detection of the rising and falling edges of the digitized received carrier. Very low power consumption and high data transmission rate are obtained with an excellent data-rate-to-carrier-frequency ratio of 100% without increasing the carrier frequency. The proposed demodulator is especially appropriate for high data rate biomedical applications such as visual prostheses and brain-machine interface. The circuit is designed in the 0.35-μm CMOS technology of Austria Micro Systems and it consumes 136.3μW @ 3.3 V at a data transmission rate of 10 Mbps.
Keywords :
biomedical electronics; brain-computer interfaces; cochlear implants; demodulators; differential phase shift keying; low-power electronics; man-machine systems; prosthetics; synchronisation; Austria Micro Systems; CMOS technology; bit rate 10 Mbit/s; brain-machine interface; clock recovery circuit; data-rate-to-carrier-frequency ratio; differential phase encoding technique; differential phase shift keying; digitized received carrier; full digital low-power DPSK demodulator; high-data rate biomedical applications; high-data rate neural implants; high-data transmission rate; inductively powered biomedical systems; power 136.3 muW; size 0.35 mum; symbol clock recovery; transmitter; visual prostheses; voltage 3.3 V; demodulator; differential phase shift keying (DPSK); high data rate; implants; inductive link; low power; non coherent;
fLanguage :
English
Publisher :
ieee
Conference_Titel :
Electronics, Circuits, and Systems (ICECS), 2010 17th IEEE International Conference on
Conference_Location :
Athens
Print_ISBN :
978-1-4244-8155-2
Type :
conf
DOI :
10.1109/ICECS.2010.5724576
Filename :
5724576
Link To Document :
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