phase VS frequency block !!!
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Hello,
I’m looking for a block that it can show me the phase of a signal (rad) versus the frequency (Hz), for example a block similar at the spectrum scope but the y axis is the phase (rad) and not the gain (dB). Thanks a lot, Be good.
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Rick Rosson
2011 年 7 月 21 日
FFT and Phase/Magnitude Blocks
You can use the "FFT" block to convert the signal from the time-domain to the frequency domain, followed by the "Complex to Magnitude-Angle" block to compute the phase in radians. If you know the sampling rate, you can compute the corresponding frequency doemain, and then plot the phase versus frequency using the "XY Graph" scope block.
Rick Rosson
2011 年 7 月 21 日
MATLAB Function Block
Another possibility would be to use the MATLAB Function Block (R2011a or later) or the Embedded MATLAB Function Block (R2010b or earlier) to compute the FFT and to plot the phase versus the frequency. Again, you will need to know the sampling rate to be able to compute the frequency domain.
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