Q factor, Q stability and gain in active filters
- 1 March 1966
- journal article
- Published by Institution of Engineering and Technology (IET) in Electronics Letters
- Vol. 2 (3) , 99-100
- https://doi.org/10.1049/el:19660080
Abstract
This letter sets out a simple theory relating the maximum Q factor of a second-order active-filter section to the stability of that Q factor and the available gain in the active elements used. The theory is shown to apply to both the ‘negative-feedback’ or ‘Rauch’-type filters and ‘positive-feedback’ or ‘Sallen–Key’-type filters and by implication to negative-impedance convertors (n.i.c.s) and the whole family of circuits based on minimum-phase feedback networks.Keywords
This publication has 1 reference indexed in Scilit:
- Active low-pass filter designIEEE Transactions on Audio, 1965