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Filter Design

Filter Design. Filtering in time (sampling) Filtering by amplitude (window discriminator) Frequency filtering Low Pass, High Pass, Band-pass, Notch filters Signal-to-noise ratio Error-correcting codes Aiming toward the Filter Quiz….

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Filter Design

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  1. Filter Design • Filtering in time (sampling) • Filtering by amplitude (window discriminator) • Frequency filtering • Low Pass, High Pass, Band-pass, Notch filters • Signal-to-noise ratio • Error-correcting codes • Aiming toward the Filter Quiz…

  2. Reading: Handout on active filters, selected pages from Chpt 5 of Horowitz & Hill, The Art of Electronics (2nd Ed),Cambridge Univ Press (1989) Book itself on the 095 bookshelf…

  3. The bandpass filter diagram is not complete: A unity gain voltage follower (UGVF) op amp is needed between the LP and HP filters to isolate the components in LP filter from interacting with components in the HP filter.

  4. Low pass, high pass, active filters Ref mysite.mweb.co.za

  5. VCVS filter modes • Butterworth (maximally flat) • Chebyshev (maximally sharp) • Bessel (best linear phase)

  6. Diagram of a FIR digital filter www.ami.ac.uk

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