Active Filters project

Discussion in 'The Projects Forum' started by Widad, Jan 2, 2013.

  1. Widad

    Thread Starter New Member

    Jan 2, 2013
    2
    0
    Hello everyone!

    My project is simple. I need to find a way to improve a butterworth high pass filter?
    I also need to
    · discussion of different designing methods of filters,
    · discussion of filter orders
    · discussion frequency response
    · comparison and evaluation of different filters based on their designing techniques (such as, Butterworth, Bessel … etc ) and their impact on frequency response, phase shift stability.
    If you guys can help to find such information I would be thankful! :D
     
    Last edited: Jan 2, 2013
  2. bertus

    Administrator

    Apr 5, 2008
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  3. Widad

    Thread Starter New Member

    Jan 2, 2013
    2
    0
    thanks bertus! this is a very useful website. Most of the information I need is there. However, I still can't find a way to improve a butterworth high pass filter.
     
  4. crutschow

    Expert

    Mar 14, 2008
    13,056
    3,245
    Define "improve" in the context of a Butterworth high pass filter.
     
  5. bountyhunter

    Well-Known Member

    Sep 7, 2009
    2,498
    507
    The tradeoff with filters is you can typically get steeper rolloff on the sides but the cost is more ripple in the passband. A Butterworth has a maximally flat passband.
     
    Dazint58j likes this.
  6. Papabravo

    Expert

    Feb 24, 2006
    10,176
    1,799
    There is no improvement that you can make. It is the unique solution to the problem of creating a filter with a maximally flat passband. The derivation is available in vanValkenburg,Analog Filter Design. There is no other filter that can meet the requirement of maximal flatness.
     
  7. gootee

    Senior Member

    Apr 24, 2007
    447
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