Question

Design a digital Butterworth filter that satisfies following specifications: $0.707 \leq |H(e^{jw})| \leq 1 for 0\leq w \leq \frac{\pi}{2}$ and $|H(e^{jw})| \leq 0.2 for \frac{3\pi}{4} \leq w \leq \pi$ Use bilinear transformation. Assume T = 1 sec.

Answer 1

The flowing liquid will always be very nearly pure solvent S. The product rho*Das can be considered constant, and the diffusion of A in S can be considered by a steady state version of the the continuity equation in terms of molar concentration (equation B.11.2). Note that the presence of a small amount of the reaction product B is ignored.