SSB Modulation

Discussion in 'Homework Help' started by omerysmi, Feb 14, 2015.

  1. omerysmi

    Thread Starter Member

    Oct 10, 2014
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    Does the contact between the amplitude of the message signal (Am) to the amplitude of the SSB signal (Vusb or Vlsb) is Am/2?

    In other words, if I will change the amplitude of the carrier signal (Ac) it will not effect the amplitude of the SSB signal?

    Thanks!
     
  2. Dodgydave

    Distinguished Member

    Jun 22, 2012
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    Yes it will effect the amplitude,the amplitude is the volume of the signal, SSB suppress the carrier,so it doesn't need a bigger bandwidth.
     
    Last edited: Feb 14, 2015
  3. omerysmi

    Thread Starter Member

    Oct 10, 2014
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    How can I calculate the amplitude of the SSB signal? doesn't it Am/2?
     
    Last edited: Feb 14, 2015
  4. bertus

    Administrator

    Apr 5, 2008
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  5. omerysmi

    Thread Starter Member

    Oct 10, 2014
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    I didn't find an answer for my question in this site.

    How can i calculate the voltage/amplitude of the usb or lsb signal?
     
  6. bertus

    Administrator

    Apr 5, 2008
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    Hello,

    Did you read this over there?

    Bertus
     
  7. omerysmi

    Thread Starter Member

    Oct 10, 2014
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    Yes but I didn't quite understand it . Why it is so difficult for your to give me the formula for calculating this?
     
  8. bertus

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    Apr 5, 2008
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  9. Dodgydave

    Distinguished Member

    Jun 22, 2012
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    An AM transmitter of a 1000Watts would be the same as a SSB transmitter at 250Watts, with no loss of audio quality, ssb uses a quarter of the power needed of an AM set.
     
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