Title :
Universal three input and one output current-mode filter without external passive elements
Author :
Atti, M. T Abuelma ; Alzaher, H.A.
Author_Institution :
King Fahd Univ. of Pet. & Miner., Dhahran, Saudi Arabia
fDate :
2/13/1997 12:00:00 AM
Abstract :
A new current-mode universal filter is proposed. The filter uses only operational amplifiers and operational transconductance amplifiers (OTAs) and can realise lowpass, highpass, bandpass, notch and allpass responses without changing circuit topology. The parameters ω0, ω0/Q0, and the gain can be electronically tuned by adjusting the bias currents of the OTAs. The proposed circuit has low sensitivity
Keywords :
active filters; all-pass filters; band-pass filters; circuit tuning; high-pass filters; linear network analysis; low-pass filters; notch filters; operational amplifiers; sensitivity analysis; OTA; allpass response; bandpass response; bias currents; electronically tunable gain; highpass response; low sensitivity circuit; lowpass response; notch response; one output; operational amplifiers; operational transconductance amplifiers; three inputs; universal current-mode filter;
Journal_Title :
Electronics Letters
DOI :
10.1049/el:19970233
