Title :
Measuring and modeling the effects of substrate noise on the LNA for a CMOS GPS receiver
Author :
Xu, Min ; Su, David K. ; Shaeffer, Derek K. ; Lee, Thomas H. ; Wooley, Bruce A.
Author_Institution :
Center for Integrated Syst., Stanford Univ., CA, USA
Abstract :
The influence of substrate noise generated in a digital circuit on the low-noise amplifier (LNA) of a CMOS GPS receiver has been experimentally characterized and theoretically analyzed. A frequency domain approach is used to model noise injection into the substrate from the digital circuitry and the mechanisms by which that noise can affect analog circuit behavior. The results reveal that substrate noise can modulate the LNA input signals as well as directly couple to the LNA output
Keywords :
CMOS integrated circuits; Electric noise measurement; Global Positioning System; Integrated circuit measurement; Integrated circuit modeling; Integrated circuit noise; Mixed analog-digital integrated circuits; Radio receivers; UHF amplifiers; UHF integrated circuits; ASIC; CMOS GPS receiver; LNA; analog circuit behavior; digital circuit generated noise; frequency domain approach; low-noise amplifier; mixed-signal circuits; noise injection modelling; substrate noise; CMOS digital integrated circuits; Character generation; Circuit noise; Digital circuits; Frequency domain analysis; Global Positioning System; Low-noise amplifiers; Noise generators; Noise measurement; Semiconductor device modeling;
Conference_Titel :
Custom Integrated Circuits Conference, 2000. CICC. Proceedings of the IEEE 2000
Conference_Location :
Orlando, FL
Print_ISBN :
0-7803-5809-0
DOI :
10.1109/CICC.2000.852683
