Plotting an Exponential Fourier Series

  1. I'm having some problem in determining the phase of an exponential fourier series. I know how to determine the coefficient which in turn gives me the series after I multiply by [itex]e^-(jωt)[/itex]
    I can determine the amplitude by dividing the coefficient by 2 [itex]|Dn| = Cn/2[/itex]
    Now my question is how to determine the phase angle. My book only gives me [itex]ø=∠Dn[/itex] and it doesn't explain how they get the values. Do I have to expand Cn into its real and imaginary parts and then calculate the angle using tan-1(-bn/an) as I would when using sines and cosines?
  2. jcsd
  3. Baluncore

    Baluncore 3,305
    Science Advisor

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