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  3. Plotting phase spectrum

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Plotting phase spectrum

sidt
sidt over 4 years ago

Hi, 

Is it possible to plot the phase spectrum in cadece virtuoso? The DFT function in the calculator plots the amplitude spectrum, but how can I plot the phase?

Basically, I am trying to calculate the power in a nth harmonic oscillator. Power would be V*I*phase_difference. I am trying to calculate the phase difference between the nth harmonic voltage and nth harmonic current. 

I use IC618.

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  • Andrew Beckett
    Andrew Beckett over 4 years ago

    Yes. The dft results produce complex values at each frequency point, and when you plot that as-is, it automatically plots the magnitude. However, you can use the phase or phaseDeg functions to plot the phase (note that it's in terms of cosine I think, so in this example where I just had three sine waves at different frequencies with different phases, the relative phases are correct):

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  • sidt
    sidt over 4 years ago in reply to Andrew Beckett

    Thanks Andrew. This is exactly what I was looking for. 

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