Title :
An active-RC reconfigurable lowpass-polyphase Tow-Thomas biquad filter
Author :
Yamazaki, Akira ; Ravindran, Arun ; Akgun, Omer Can ; Ismail, Mohammed
Author_Institution :
Dept. of Electr. Eng., Ohio State Univ., Columbus, OH, USA
Abstract :
A novel active-RC biquad is presented which can be reconfigured as a polyphase filter for a low IF wireless receiver architecture, and as a lowpass filter for a zero IF wireless receiver architecture. A second order lowpass-polyphase reconfigurable filter is implemented to illustrate the technique. A 1.8 V fully differential operational amplifier in 0.18 μ CMOS technology is used as the active element.
Keywords :
CMOS integrated circuits; RC circuits; biquadratic filters; differential amplifiers; low-pass filters; operational amplifiers; radio receivers; radiofrequency filters; 0.18 micron; 1.8 V; CMOS technology; Tow-Thomas biquad filter; active RC biquad filter; fully differential operational amplifier; low IF wireless receiver architecture; lowpass-polyphase reconfigurable filter; second order filter; Active filters; Band pass filters; CMOS technology; Circuits; Computer architecture; Differential amplifiers; Filtering; Frequency; Low pass filters; Operational amplifiers;
Conference_Titel :
Circuits and Systems, 2004. MWSCAS '04. The 2004 47th Midwest Symposium on
Print_ISBN :
0-7803-8346-X
DOI :
10.1109/MWSCAS.2004.1353896
