Title :
A CMOS highly linear channel-select filter for 3G multistandard integrated wireless receivers
Author :
Alzaher, Hussain A. ; Elwan, Hassan O. ; Ismail, Mohammed
Author_Institution :
Dept. of Electr. Eng., Ohio State Univ., Columbus, OH, USA
fDate :
1/1/2002 12:00:00 AM
Abstract :
A new approach for designing digitally programmable CMOS integrated baseband filters is presented. The proposed technique provides a systematic method for designing filters exhibiting high linearity and low power. A sixth-order Butterworth low-pass filter with 14-bit bandwidth tuning range is designed for implementing the baseband channel-select filter in an integrated multistandard wireless receiver. The filter consumes a current of 2.25 mA from a 2.7-V supply and occupies an area of 1.25 mm2 in a 0.5-μm chip. The proposed filter design achieves high spurious free dynamic ranges (SFDRs) of 92 dB for PDC (IS-54), 89 dB for GSM, 84 dB for IS-95, and 80 dB for WCDMA
Keywords :
Butterworth filters; CMOS integrated circuits; low-pass filters; low-power electronics; mobile radio; programmable filters; radio receivers; 0.5 micron; 2.25 mA; 2.7 V; 3G multistandard integrated wireless receiver; CMOS channel-select filter; GSM; IS-54; IS-95; PDC; WCDMA; bandwidth tuning range; digitally programmable baseband filter; linearity; low-power design; sixth-order Butterworth low-pass filter; spurious free dynamic range; Bandwidth; Baseband; Design methodology; Digital filters; Dynamic range; GSM; Linearity; Low pass filters; Multiaccess communication; Nonlinear filters;
Journal_Title :
Solid-State Circuits, IEEE Journal of
