Title :
A high frequency bandpass continuous-time filter with automatic frequency and Q-factor tuning
Author :
Liu, Heizgsherig ; Karsilayan, Aydin I.
Abstract :
A second order high frequency CMOS bandpass filter with automatic frequency and Q-factor tuning is presented. The frequency tuning is based on the phase-locked-loop technique. A new charge pump circuit and a new quality factor tuning scheme are proposed. The circuit was designed using AMI 0.5 u CMOS process. Simulation results of a bandpass filter working at 100 MHz with expected Q of 20 and 50 are presented
Keywords :
CMOS analogue integrated circuits; Q-factor; band-pass filters; circuit tuning; continuous time filters; phase locked loops; 0.5 micron; 100 MHz; automatic frequency tuning; automatic quality factor tuning; charge pump circuit; phase locked loop; second-order high-frequency CMOS band-pass continuous time filter; Ambient intelligence; Automatic frequency control; Band pass filters; CMOS process; Charge pumps; Circuit optimization; Circuit simulation; Phase locked loops; Q factor; Tuning;
Conference_Titel :
Circuits and Systems, 2001. ISCAS 2001. The 2001 IEEE International Symposium on
Conference_Location :
Sydney, NSW
Print_ISBN :
0-7803-6685-9
DOI :
10.1109/ISCAS.2001.921859
