Title :
Current-mode biquad using OTAs and CF
Author :
Tsukutani, T. ; Sumi, Y. ; Higashimura, M. ; Fukui, Y.
Author_Institution :
Adv. Eng. Fac. of Electron. & Inf. Syst., Matsue Nat. Coll. of Technol., Japan
fDate :
2/6/2003 12:00:00 AM
Abstract :
A novel current-mode biquad using operational transconductance amplifiers (OTAs) and current follower (CF) is presented. The circuit can realise lowpass, bandpass, highpass, band-stop and all-pass transfer functions without any circuit matching conditions. The circuit parameters can also be tuned independently by the transconductance gains of the OTAs. The proposed biquad enjoys very low sensitivities with respect to the circuit elements.
Keywords :
all-pass filters; band-pass filters; band-stop filters; biquadratic filters; current-mode circuits; high-pass filters; low-pass filters; operational amplifiers; CF; OTAs; all-pass transfer functions; band-stop transfer functions; bandpass transfer functions; circuit parameters; current follower; current-mode biquad; highpass transfer functions; lowpass transfer functions; sensitivities; transconductance gains;
Journal_Title :
Electronics Letters
DOI :
10.1049/el:20030206
