FM/CW modulation has moving spurs

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skxsjhdschjsxh
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Joined: Mon Apr 15, 2024 11:52 pm

FM/CW modulation has moving spurs

Post by skxsjhdschjsxh »

Hi,

I am generating a FMCW signal and there are two moving spurs (image frequencies).
10Mhz deviation at 6Ghz even with a 1 second sweep rate, even with a fixed offset
The moving spurs have a 38dbc difference.
Changing the IQ dc offset does not have an effect.

Any ideas would be most welcome!
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