Title :
Programmable active filters [spectrum analyzer application]
Author :
Sparkes, Robert G. ; Sedra, Andadel S.
Abstract :
A general method of electronically controlling the parameters of second-order state-variable filters using analog multipliers is presented. Three configurations are shown as examples with experimental results. A spectrum analyzer is discussed as a simple application of tunable filters.
Keywords :
Active filters; Spectral analysers; active filters; spectral analysers; Active filters; Automatic voltage control; Capacitance; Circuit testing; Feedback; Frequency; MOS capacitors; Shift registers; Spectral analysis; Voltage control;
Journal_Title :
Solid-State Circuits, IEEE Journal of
DOI :
10.1109/JSSC.1973.1050352
