An Active-RC Reconfigurable Lowpass-Polyphase Tow-Thomas Biquad Filter

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 um CMOS technology is used as the active element.

Publication
In Proceedings of Midwest Symposium on Circuits and Systems
Date

Bibtex

@inproceedings{yamazakiMWCAS2004,
  author = {Yamazaki, A. and Ravindran, A. and Akgun, O. C. and Ismail, M.},
  booktitle = {The 47th Midwest Symposium on Circuits and Systems (MWSCAS)},
  title = {{An Active-RC Reconfigurable Lowpass-Polyphase Tow-Thomas Biquad Filter}},
  year = {2004},
  pages = {57--60},
  doi = {10.1109/MWSCAS.2004.1353896}
}