Please use this identifier to cite or link to this item: https://hdl.handle.net/10356/91625
Title: A mixed-signal GFSK demodulator based on multi-threshold linear phase quantization
Authors: Han, Dong
Zheng, Yuanjin
Keywords: DRNTU::Engineering::Electrical and electronic engineering
Issue Date: 2009
Source: Han, D., & Zheng, Y. (2009). A mixed-signal GFSK demodulator based on multi-threshold linear phase quantization. IEEE Transactions On Circuits And Systems—II, 56(9), 719-723.
Series/Report no.: IEEE transactions on circuits and systems—II
Abstract: An ultralow-power Gaussian frequency-shift keying (GFSK) demodulator with large tolerance for process variations and wide coverage of data rate for low-intermediate-frequency (low-IF) wireless receivers is presented. A novel multithreshold linear phase quantization technique is proposed to improve the demodulator sensitivity and relax the tradeoff between the selection of the IF and the data rate. A dynamic threshold slicer is employed to efficiently overcome the dc drifts caused by the input frequency offset. The demodulator achieves 490-mV input dc offset cancellation, 800-kHz frequency offset tolerance, and data rate coverage from 100 kb/s to 2 Mb/s. The measured signal-to-noise ratio (SNR) is 16.0 dB for a 0.1% bit error rate (BER) and a 0.25 modulation index. The demodulator has been fabricated in a 0.18-μm complimentary metal–oxide–semiconductor process with only 0.14-mm2 active area and 450-μA current drawn from a 1.8-V power supply.
URI: https://hdl.handle.net/10356/91625
http://hdl.handle.net/10220/6236
ISSN: 1549-7747
DOI: http://dx.doi.org/10.1109/TCSII.2009.2027969
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Fulltext Permission: open
Fulltext Availability: With Fulltext
Appears in Collections:EEE Journal Articles

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