bandpass filter

Discussion in 'General Electronics Chat' started by diwa2000@gmail.com, Jul 3, 2008.

  1. diwa2000@gmail.com

    Thread Starter Active Member

    Apr 15, 2008
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    do we have any bandpass filter module available in the market ....or we only have to design them according to spectfication.
    thanks
    Regards
     
  2. bertus

    Administrator

    Apr 5, 2008
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    hello,

    What should be the frequencie and bandwidth of your filter.

    On this page technical reference can be found.
    http://ac6v.com/techref.htm

    Greetings,
    Bertus
     
  3. diwa2000@gmail.com

    Thread Starter Active Member

    Apr 15, 2008
    40
    0
    the frequency has to be 433MHz and the bandwidth around 1Mhz
     
  4. bertus

    Administrator

    Apr 5, 2008
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  5. SgtWookie

    Expert

    Jul 17, 2007
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    You need to give more specifics than that.

    What is the power level going through the filter?
    How much attenuation is allowable?
    How much ripple?
    What is your stopband, and how many dB down do you need?

    In general, your passband is rather narrow being about 0.23% of the frequency. This is going to be a rather complex (and expensive) filter if it's passive.
     
  6. Wendy

    Moderator

    Mar 24, 2008
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    If this was for a receiver the general technique is to covert it to a lower frequency, as in down converting via heterodyning. The filter is much easier to make then.
     
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