(a) Describe the structure and way of functioning of the FFT filter consisting of three components (modules)
(b) What must be taken into account in the case of the FFT filter to make sure that the desired conducting state region of the filter is set correctly.
(c) Why does the selectivity or edge steepness of the FFT filter extend to the physical limit imposed by the Uncertainty Principle?
(d) What are the advantages and disadvantages of the FFT filter?