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Power of Burst waveform going through an amplifier

  1. Mar 9, 2013 #1
    Hi all,

    How would I calculate theoretical power of:

    1Mhz (sinewave)
    200 cycles
    100ms interval
    50Ω load

    This waveform is going into a 55db amplifier.

    Any help would be great.

  2. jcsd
  3. Mar 13, 2013 #2
    1Vpp continous into 50 ohm is 2.5 milliwatt.
    2.5 milliwatt for 200 cycles at 1 MHz is 0.5 x 10^-6 joule.
    0.5 x 10^-6 joule 10 times per second is 5x10^-6 joule/second or 5x10^-6 watt.
    (5 microwatt)
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