A 6.5-GHz energy-efficient BFSK modulator for wireless sensor applications

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A 6.5-GHz FSK modulator suitable for low power wireless sensor network is presented. The energy efficient modulator employs closed-loop direct VCO modulation to achieve high data rate, multistage variable loop bandwidth technique for fast startup time and Sigma-Delta for reduced power consumption in the synthesizer with fine resolution in frequency channel selection. The modulator, implemented using 0.25-mum CMOS, achieves 20-mus startup time with an effective data rate of 2.5 Mb/s while consuming 22 mW.
Publisher
IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
Issue Date
2004-05
Language
English
Article Type
Article
Keywords

FREQUENCY-SYNTHESIZER

Citation

IEEE JOURNAL OF SOLID-STATE CIRCUITS, v.39, no.5, pp.731 - 739

ISSN
0018-9200
DOI
10.1109/JSSC.2004.826314
URI
http://hdl.handle.net/10203/78308
Appears in Collection
EE-Journal Papers(저널논문)
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