Title :
Low-voltage low-sensitivity switched-capacitor bandpass ΔΣ modulator
Author :
Keskin, M. ; Un-Ku Moon ; Temes, Gabor C.
Author_Institution :
Dept. of Electr. & Comput. Eng., Oregon State Univ., Corvallis, OR, USA
Abstract :
A novel low-voltage (LV) switched-capacitor (SC) resonator circuit and its bandpass ΔΣ modulator implementation are presented. The proposed circuit not only uses lower supply voltage but also reduces the errors due to analog imperfections. Hence, these circuits may be suitable for submicron LV CMOS process in the next generation of AM and FM digital radio and GSM receivers
Keywords :
CMOS analogue integrated circuits; analogue processing circuits; cellular radio; digital radio; modulators; radio receivers; sigma-delta modulation; switched capacitor networks; AM digital radio; FM digital radio; GSM receivers; bandpass ΔΣ modulator; errors; submicron LV CMOS; switched-capacitor resonator; Band pass filters; CMOS process; CMOS technology; Circuits; Delta modulation; Low pass filters; Operational amplifiers; Receivers; Resonator filters; Sampling methods;
Conference_Titel :
Circuits and Systems, 2001. ISCAS 2001. The 2001 IEEE International Symposium on
Conference_Location :
Sydney, NSW
Print_ISBN :
0-7803-6685-9
DOI :
10.1109/ISCAS.2001.921864
