PP filtar 4. reda s 3 pojačala
Matija Viola · 2021
In this final assigment, the task was to realize a certain analog filter, more precisely Butterworth 4th order band-pass filter with operational amplifier in the structure of the biquart cascade with given central frequency of 4000[Hz]. The procedure from setting the problem to the realizastion of the filter, designing and calculating certain parameters and obtaining standardized and denormalized values of the elements is presented.The given transfer function yielded a mathematical model and analytical expressions and graphs for amplitude-frequency characteristics, phase-frequency characteristics, and the distribution of poles and zeros. We determined the parameters of the filter elements for the realization, denormalized the default filter to the central frequency and used the Spice program to check the accuracy of the realization.