A bandpass active filter for Fourier analysis laboratory
In this note is presented a modified bandpass state-variable active filter which exhibits constant gain, high-Q, where its tuning frequency can easily be varied. This circuit proves to be useful for experimental demonstration of the Fourier series in communications or signal analysis laboratories.
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References
1.
LancasterD., Active Filter Cookbook, Howard W. Sams & Co., Inc. (1979)
2.
YewenJ. D., ‘Constant-gain tuned filter’, Electronics World + Wireless World, p. 509 (June 1992)
