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Amplitude Shift Keying Modulation

Discussion in 'General Electronics Chat' started by KCHARROIS, Jul 5, 2012.

  1. KCHARROIS

    Thread Starter Active Member

    Jun 29, 2012
    302
    8
    Hello I understand ASK modulation but I'd like to know what the jfet does to the circuit to ASK modulate?

    Thanks
     
  2. MrChips

    Moderator

    Oct 2, 2009
    19,146
    6,152
    The FET exhibits a decreasing resistance to ground as the gate voltage increases.
    Thus as the input signal increases in amplitude the carrier signal is attenuated.
    You can consider this an analog multiplier circuit which will amplitude modulate the carrier signal.
     
  3. Eric007

    Senior Member

    Aug 5, 2011
    1,154
    39
    Wrong forum!!! IMO.

    Go to 'general electronics chat' or 'radio & communication'
     
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