Title :
An 85 MHz IF bandpass sigma-delta modulator for CDMA receivers
Author :
Bazarjani, S. ; Younis, S. ; Goldblatt, J. ; Butterfield, D. ; McAllister, G. ; Ciccarelli, S.
Author_Institution :
Qualcomm Inc., San Diego, CA
Abstract :
An 8th-order double-sampled SC bandpass sigma-delta modulator is presented. This circuit is implemented in a 0.6 µm CMOS technology and operates at a sampling frequency of 64 MHz. The signal bandwidth is 1.25 MHz centered at 85 MHz, the measured SNDR is 58.2 dB. The circuit operates at 3 V and consumes 48 mW.
Keywords :
Band pass filters; Baseband; Circuits; Delta-sigma modulation; Digital filters; Digital modulation; Frequency; Jamming; Multiaccess communication; Receivers;
Conference_Titel :
Solid-State Circuits Conference, 1999. ESSCIRC '99. Proceedings of the 25th European
Conference_Location :
Duisburg, Germany
