1. Limited time only! Sign up for a free 30min personal tutor trial with Chegg Tutors
    Dismiss Notice
Dismiss Notice
Join Physics Forums Today!
The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

Homework Help: AM bandwidth determination

  1. Apr 21, 2012 #1
    Hello, if I was using an 800Mhz carrier which was modulated with the range of frequencies 200Hz-3.3khz, what would be the total bandwidth ?

    Would it be 3.1Khz * 2 = 6.2kHz or would it be 6.6kHz ?

    Thanks for any help.
  2. jcsd
  3. Apr 22, 2012 #2

    rude man

    User Avatar
    Homework Helper
    Gold Member

    Figure it out for yourself.

    Assuming a.m., what do you get when you modulate sin(ωct) with sin(ωmt)?

    By "bandwidth", assume the total required spectrum for your a.m. carrier.
  4. Apr 22, 2012 #3
    The clue is the word 'total'.....you can disregard the lower modulating frequency of 200Hz
    Would you know how to find the width of the 2 sidebands if you were asked?
Share this great discussion with others via Reddit, Google+, Twitter, or Facebook