Simple answer is yes.
More complex answer gets into things like the noise of the mixer (not just it’s
the levels of the signals, noise being coherent rather than non-coherent, AM
conversion and on and on ….
> On Oct 17, 2016, at 4:45 PM, Anders Wallin <anders.e.e.wal...@gmail.com>
> Hi group!
> Can someone help me with how phase-noise through a mixer is calculated?
> Let's say I connect a 1 GHz signal with -80 dBc/Hz PN (wrt. 1GHz carrier)
> at some offset to the RF port.
> I then connect a 900 MHz signal with also -80dBc/Hz PN (wrt. 900MHz
> carrier) at the same offset.
> I'm interested in the 100 MHz IF signal (naively, will it have -77 dBc/Hz
> PN wrt 100MHz? carrier?)
> (ofcourse there might be a noise-figure through the mixer also)
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