what is order of a filter

Discussion in 'Homework Help' started by alialiali, Mar 3, 2009.

  1. alialiali

    Thread Starter Member

    Dec 12, 2008
    26
    0
    Hi every one

    Please can any one tell me what is the order of a filter ? with brief account on how is it implemented in filter design

    Many thx
     
  2. bertus

    Administrator

    Apr 5, 2008
    15,648
    2,346
    Hello,

    The order of a filter has to do with the amount of dB's the flange per octave of the filter has.
    A 1st order has 6 dB/octave flange.
    A 2nd order has 12 dB/octave flange.
    ..
    ..
    A n th order has a n*6 dB/octave flange.

    Greetings,
    Bertus

    See also the page I posted in the other thread of you.
     
  3. mik3

    Senior Member

    Feb 4, 2008
    4,846
    63
    If you want a more practical way to determine the order of a filter count the number of reactive components in the circuit.
     
  4. alialiali

    Thread Starter Member

    Dec 12, 2008
    26
    0
    Many thanks
     
  5. hgmjr

    Moderator

    Jan 28, 2005
    9,030
    214
    Do you have a specific circuit that you are trying to detemine what the order is?

    hgmjr
     
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