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Measurements >> Phase Noise and Jitter Measurements >> phase noise >0dBc/Hz at small frequency offsets
https://designers-guide.org/forum/YaBB.pl?num=1192678682

Message started by Dio on Oct 17^th, 2007, 8:38pm

Title: phase noise >0dBc/Hz at small frequency offsets
Post by Dio on Oct 17^th, 2007, 8:38pm

Hi all,

I noticed, that resulting phase noise curve I'm geting through PSS+PNoise simulation starts from positive value if small frequency offsets are used (like 10..100 Hz). One would expect it to start from 0, since it in dBc/Hz. Is it simulation accuracy (reltol) issue or something fundamental in how SpectreRF handles this type of simulations or something wrong can be with setup/circuitry?

Thanks
Dio

Title: Re: phase noise >0dBc/Hz at small frequency offset
Post by Frank Wiedmann on Oct 17^th, 2007, 11:20pm

See http://www.designers-guide.org/Forum/YaBB.pl?num=1050465395.