Title :
Synthesis of log-domain filter with well-defined operating point
Author :
Xu, Zhan ; El-Masry, Ezz I.
Author_Institution :
Dept. of Electr. & Comput. Eng., Dalhousie Univ., Halifax, NS, Canada
Abstract :
A new systematic approach for the design of nth order log-domain filters is presented. By eliminating the bias uncertainty, proper working condition is guaranteed for log-domain CMOS realization. This approach is based on the inverse-follow-the-leader-feedback (IFLF) topology and DC negative feedbacks are introduced to define the bias condition. To illustrate the proposed approach, a fourth order low-pass filter is designed and simulated in HSPICE.
Keywords :
CMOS integrated circuits; SPICE; circuit feedback; low-pass filters; network synthesis; DC negative feedbacks; HSPICE; bias condition; bias uncertainty; inverse-follow-the-leader-feedback topology; log-domain CMOS realization; log-domain filter synthesis; low-pass filter; nth order log-domain filters; operating point; CMOS technology; Capacitors; Circuit simulation; Circuit synthesis; Circuit topology; Feedback circuits; Low pass filters; Signal processing; Uncertainty; Voltage;
Conference_Titel :
Circuits and Systems, 2004. ISCAS '04. Proceedings of the 2004 International Symposium on
Print_ISBN :
0-7803-8251-X
DOI :
10.1109/ISCAS.2004.1328366
