Title :
A new technique to stabilize frequency and Q-variations due to temperature changes in gm-C filters in CMOS technology
Author_Institution :
Dept. of Electr. & Comput. Eng., Concordia Univ., Montreal, Que., Canada
Abstract :
A new technique is proposed to effect stabilization of the center frequency and quality factor of CMOS band-pass biquadratic filter due to changes in environmental temperature. The method uses conventional negative feedback technique to stabilize the transconductance of the building blocks against temperature variations. Since these building blocks control the frequency and quality factor of the filter, the filter characteristics are accordingly stabilized
Keywords :
CMOS analogue integrated circuits; Q-factor; band-pass filters; biquadratic filters; circuit feedback; circuit stability; frequency stability; CMOS technology; Q-variations; band-pass biquadratic filter; building blocks; center frequency; environmental temperature; filter characteristics; frequency variations; gm-C filters; negative feedback technique; quality factor; stabilization; temperature variations; transconductance; Band pass filters; CMOS technology; Circuits; Differential amplifiers; Frequency; Negative feedback; Q factor; Temperature distribution; Transconductance; Voltage;
Conference_Titel :
Electronics, Circuits and Systems, 2000. ICECS 2000. The 7th IEEE International Conference on
Conference_Location :
Jounieh
Print_ISBN :
0-7803-6542-9
DOI :
10.1109/ICECS.2000.911562
