Visible light communication system Receiver

Discussion in 'The Projects Forum' started by sycandy06, Jan 5, 2010.

  1. sycandy06

    Thread Starter New Member

    Jan 5, 2010
    1
    0
    Hi, I'm doing a project of using LED light to transmit data. for the receiver part, i've to start with a Bandpass filter which center frequency at 100kHz. I've designed a second order Sallen key Bandpass, but the result of the schematic doesn't at 100kHz..It has a little bit distortion. How can i fix this problem??
     
  2. JDT

    Well-Known Member

    Feb 12, 2009
    658
    85
    Are you trying to build this 100kHz band-pass filter with an op-amp?

    If so, that will be the source of your trouble. Unless you use a seriously high-frequency amplifier.

    Best to use a passive filter at this frequency. A simple L-C tuned circuit will do. More complicated designs exist but will need a lot of circuit elements and mathematics!
     
  3. maogibba

    New Member

    Jan 4, 2010
    1
    0
  4. thebigk7

    New Member

    Aug 15, 2011
    2
    0
    hi, even I'm working on visible light communication project, any ideas on implementing the transmitter section using a laptop and LEDs ?thanks in advance
     
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