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Extracting Frequency Component from FFT

MenghanSun

Dear all,

I wish to extract frequency component from the FFT the result.

At the moment, in the ADE XL, in the outputs setup tab, I have such an expression,

dft("xxx" 99u 100u 65536 "Rectangular" 1 "default" 1)/dft("yyy" 99u 100u 65536 "Rectangular" 1 "default" 1)

After the simulation run, in the results tab, the result of the above expression is a waveform. Then, I have to open the waveform, zooming into 915MHz(as I'm getting many frequency component over a wide band), changing the type from magnitude to real or to imaginary, to get the real and imaginary part of the signal.  It's very annoying.

I'm wondering if we could do all that with a script, finding the 915MHz component and extract the real and imaginary component. Any help is very much appreciated.

Menghan

Tool version: ic616 mmsim141

  • Andrew Beckett

    Hi Menghan,

    You just need to use real(value(... 915M)) or imag(value(... 915M)) . You could leave this output as is, and add a new output:

    real(value(calcVal("dftResults") 915M))

    etc. This is assuming that the output is called "dftResults".

    Regards,

    Andrew.

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