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Design Languages >> Verilog-AMS >> noise_table question in the phase domain model of VCO
https://designers-guide.org/forum/YaBB.pl?num=1243555800

Message started by lily on May 28^th, 2009, 5:10pm

Title: noise_table question in the phase domain model of VCO
Post by lily on May 28^th, 2009, 5:10pm

I want to use Ken's phase domain VCO model with noise_table function (as described in "Predicting the Phase Noise and Jitter of PLL-Based Frequency Synthesizers1"). My question is that how can I get the phase power density at each frequency? As the SpectreRF pnoise simulation results provide phase noise or output noise, can I directly use them or if not, is there any simple way I can get it? thanks!

Title: Re: noise_table question in the phase domain model of VCO
Post by pancho_hideboo on Jun 8^th, 2009, 4:49am

You don't respond to our comments in the following.
http://www.designers-guide.org/Forum/YaBB.pl?num=1242929797
Have you resolved this issue ?

lily wrote on May 28^th, 2009, 5:10pm:

I want to use Ken's phase domain VCO model with noise_table function (as described in "Predicting the Phase Noise and Jitter of PLL-Based Frequency Synthesizers1").
As the SpectreRF pnoise simulation results provide phase noise or output noise, can I directly use them or if not, is there any simple way I can get it?

I don't see the above document, but maybe you refer SΦ(f).
See the following.
http://www.designers-guide.org/Forum/YaBB.pl?num=1223659963/1#1

"pnoise" give L_ssb(f).
"pnoise jitter" give SΦ(f).

Title: Re: noise_table question in the phase domain model of VCO
Post by pancho_hideboo on Jun 9^th, 2009, 4:50am

See http://www.designers-guide.org/Forum/YaBB.pl?num=1244213153/6#6