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Simulators >> RF Simulators >> VCO + tone on varactor PSS sim
https://designers-guide.org/forum/YaBB.pl?num=1197588786

Message started by borisk on Dec 13^th, 2007, 3:33pm

Title: VCO + tone on varactor PSS sim
Post by borisk on Dec 13^th, 2007, 3:33pm

Does anyone have insight into how a VCO with a periodic signal on the control voltage would be simulated with PSS? The expected spectrum is the vco tone with sidebands on either side at the offset corresponding to the frequency of the varactor control voltage signal.

Clearly, TRAN and then FFT is one way of doing it, but can it all the done with PSS/QPSS?

Thanks for your help.

Cheers,

Boris

Title: Re: VCO + tone on varactor PSS sim
Post by jlee on Dec 23^rd, 2007, 7:01pm

Hi,

Try to add a noise file included in vdc, make a spur-like noise shape at some offset frequency as you want, run PSS+Pnoise, and you will see the spurious tone in the phase noise curve.

Hope it can help u.

Jason Lee