neoflash
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Mixed-Signal Designer
Posts: 397
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Since I failed to get reasonable result, from EldoRF, for a cascaded VCO and divider, I turned to spectreRF.
I'm simulating a 5G VCO with a cascaded divider-by-4. I'm probing phase noise at the output of divider.
When I setup the beat frequency as 5G and put probe at VCO output, the pss analysis can not converge. However, when I put the probe at divider output and set beat frequency as 1.25G, the simulation converged with some warning.
I'm not sure whether it is the correct setup. Since spectreRF is more used among people, hope i can get some help. Thanks.
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