A low-power noncoherent BPSK demodulator and clock recovery circuit for high-data-rate biomedical applications

A novel noncoherent BPSK demodulator is presented for inductively powered biomedical devices. Differential Manchester encoding technique is used and data demodulation is based on pulse width measurement method. In addition to ultra low power consumption, high data rate without increasing the carrier...

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Bibliographic Details
Published in2009 Annual International Conference of the IEEE Engineering in Medicine and Biology Society Vol. 2009; pp. 4840 - 4843
Main Authors Asgarian, F., Sodagar, A.M.
Format Conference Proceeding Journal Article
LanguageEnglish
Published United States IEEE 01.01.2009
Subjects
Binary phase shift keying
Biomedical measurements
Circuits
Clocks
CMOS technology
Demodulation
Electronics, Medical - instrumentation
Electronics, Medical - methods
Encoding
Energy consumption
Equipment Design
Humans
Prostheses and Implants
Pulse measurements
Space vector pulse width modulation
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Summary:A novel noncoherent BPSK demodulator is presented for inductively powered biomedical devices. Differential Manchester encoding technique is used and data demodulation is based on pulse width measurement method. In addition to ultra low power consumption, high data rate without increasing the carrier frequency is achieved with the outstanding data-rate-to-carrier-frequency ratio of 100%. The proposed demodulator is especially appropriate for biomedical applications where high speed data transfer is required, e.g., cochlear implants and visual prostheses. The circuit is designed in a 0.18-mum standard CMOS technology and consumes as low as 232 muW @1.8 V at a data rate of 10 Mbps.
ISSN:1094-687X
1557-170X
1558-4615
DOI:10.1109/IEMBS.2009.5332664