frequency modulation?

Discussion in 'Homework Help' started by suzuki, Jul 11, 2012.

  1. suzuki

    Thread Starter Member

    Aug 10, 2011
    119
    0
    Hi all,

    I just have a question about frequency modulation for harmonic systems. I know for (FM) for fundamental frequency you have the expansion

    output = J_0(\beta)V\cos(\omega t)\pm J_1(\beta)\cos((\omega \pm \omega_m)t)+...

    I am wondering what is the equivalent for the third Harmonic? is it

    output = J_0(\beta)V\cos(3\omega t)\pm J_1(\beta)(3(\omega \pm \omega_m)t)+...<br />

    or

    output = J_0(\beta)V\cos(3\omega t)\pm J_1(\beta)((3\omega \pm \omega_m)t)+...

    tia
     
  2. t_n_k

    AAC Fanatic!

    Mar 6, 2009
    5,448
    782
    In the past I've run some simulations of a frequency (sine wave) modulated square wave carrier. The results I obtained are consistent with the last [3rd] equation in your post.
     
    suzuki likes this.
Loading...