Electronic – How to export the frequency response from LTSPICE without phase wrapping

bode plotfrequency responseltspicephase margin

After I plotted the frequency response of a circuit using LTSpice as shown:

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I exported the plots data as a .txt file in order to plot them after that using MATLAB, however, after I plotted the data using MATLAB I discovered that the exported data from LTSpice has the phase wrapped, as shown:

enter image description here

Is there a way to export the LTSpice frequency response without having the phase wrapped?

Best Answer

I think you cannot fix this in LTSpice.
I didn't find hard evidence, but very plausible evidence.
If you hover over the angle axis (you'll see a ruler) and left click it, there is an option to Unravel Branch Wrap. Why would the option here if there were no reason to unravel it?

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If you deselect it, you'll see the same output as MATLAB shows.

So, I think you should unravel the data yourself, in MATLAB.

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