Measuring and modeling the effects of substrate noise on the LNA for a CMOS GPS receiver

The influence of substrate noise coupling on the performance of a low-noise amplifier (LNA) for a CMOS GPS receiver has been investigated both analytically and experimentally. A frequency-domain approach has been used to model both noise injection into the substrate from digital circuitry integrated...

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Bibliographic Details
Published in:IEEE journal of solid-state circuits 2001-03, Vol.36 (3), p.473-485
Main Authors: Min Xu, Su, D.K., Shaeffer, D.K., Lee, T.H., Wooley, B.A.
Format: Article
Language:English
Subjects:
Analog circuits
Circuit noise
CMOS
CMOS technology
Coupling circuits
Crosstalk
Geographic information systems
Global Positioning System
Integrated circuit noise
Joining
Mathematical analysis
Noise
Noise measurement
Receivers
Satellite navigation systems
Semiconductor device modeling
Substrates
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Summary:The influence of substrate noise coupling on the performance of a low-noise amplifier (LNA) for a CMOS GPS receiver has been investigated both analytically and experimentally. A frequency-domain approach has been used to model both noise injection into the substrate from digital circuitry integrated on the same chip and the mechanisms by which that noise can affect analog circuit behavior. The results of this study reveal that substrate noise can modulate the LNA input signal as well as couple directly to the amplifier's output.
ISSN:0018-9200
1558-173X
DOI:10.1109/4.910486