DocumentCode :
1062819
Title :
A Novel BPSK Demodulator for Biological Implants
Author :
Luo, Zhenying ; Sonkusale, Sameer
Author_Institution :
RF Micro Devices Inc., Billerica, MA
Volume :
55
Issue :
6
fYear :
2008
fDate :
7/1/2008 12:00:00 AM
Firstpage :
1478
Lastpage :
1484
Abstract :
A novel binary phase-shift keying (BPSK) demodulator architecture is presented. The design employs a phase frequency detector based phase-locked loop allowing for robust performance compared to prior art. Two different circuit implementations for the novel demodulator architecture are proposed. Based on theoretical analysis, the maximum data rate of the demodulator is derived to be 1/8th of the carrier frequency. For experimental validation, a prototype was implemented for a 13.56-MHz BPSK demodulator in a 0.5-mum CMOS technology. The circuit occupies 1 mm2 chip area and consumes 3-mW power without any circuit optimization and can be further improved. Bit-error rate measurements have also been presented for a 20-kbs data rate.
Keywords :
demodulators; error statistics; phase locked loops; phase shift keying; prosthetics; BPSK demodulator; binary phase-shift keying demodulator; biological implants; bit-error rate; phase frequency detector; BPSK Demodulator; Biological Implant; Biological implant; Biomedical Implant; Charge Pump PLL; Wireless Implant; binary phase-shift keying (BPSK) demodulator; biomedical implant; charge-pump (CP) phase-locked loop (PLL); wireless implant;
fLanguage :
English
Journal_Title :
Circuits and Systems I: Regular Papers, IEEE Transactions on
Publisher :
ieee
ISSN :
1549-8328
Type :
jour
DOI :
10.1109/TCSI.2008.918174
Filename :
4447933
Link To Document :
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