Modulation

Discussion in 'Wireless & RF Design' started by mikeonthegreen, Jan 21, 2007.

  1. mikeonthegreen

    Thread Starter Member

    Jan 7, 2007
    21
    0
    Here is the question. What is the formula?

    An AM transmitter transmits 200 W when modulated at 40%. The power in the lower sideband is ________ W.
    Your answer: 85.18
    The correct answer: 7.41
     
  2. beenthere

    Retired Moderator

    Apr 20, 2004
    15,815
    282
    Hi,

    How did the correct answer get arrived at? Think of this - if the total power in both AM sidebands is X watts, then the power in either the upper or lower sideband is __ % of the total.
     
  3. ak86

    New Member

    Jan 26, 2007
    5
    0
    Pt=Pc(1+m^2/2) is the correct formula for this so u'll need to substitute in this and you get the answer,understood if this is wrong formula then let me know the correct one.
    thank you
     
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