Title :
Grounded-capacitor bandpass filter using the operational-amplifier pole
Author_Institution :
Jadavpur University, Department of Electronics & Telecommunication Engineering, Calcutta, India
Abstract :
A configuration for realising a 2nd-order bandpass filter based on the single-pole roll-off characteristics of the operational amplifier with a single grounded external capacitor is presented. The filter has low sensitivity to all the circuit parameters. Experimental results verify its suitability in high-frequency applications with moderately high selectivity. Independent control of centre frequency, frequency selectivity and midband gain is possible.
Keywords :
active filters; band-pass filters; active filters; low sensitivity; moderately high selectivity; operational amplifier; second order bandpass filter; single grounded external capacitor;
Journal_Title :
Electronics Letters
DOI :
10.1049/el:19770503
