Input circuit for TA31136

Discussion in 'Wireless & RF Design' started by cippy, Aug 12, 2015.

  1. cippy

    Thread Starter New Member

    Aug 12, 2015
    1
    0
    Hi all

    How to calculate the input circuit (C1, C2, L2, L3) for certain frequencies?

    Thanks a lot!
     
  2. alfacliff

    Well-Known Member

    Dec 13, 2013
    2,449
    428
  3. InspectorGadget

    Active Member

    Nov 5, 2010
    211
    42
    Changing the operating RF frequency of this receiver is A LOT more complicated than just changing the tuned circuit on the input. You need to change the local oscillator frequency, get the expected IF frequency, adjust the LPF and HPF component values at the inverting amp, and change the quadrature detector operating frequency (if you use a different IF -- intermediate frequency).
     
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