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Simulators >> RF Simulators >> Power supply coupling modulate VCO
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Message started by daxigua179 on Apr 25^th, 2011, 1:08am

Title: Power supply coupling modulate VCO
Post by daxigua179 on Apr 25^th, 2011, 1:08am

I am wondering about whether power supply coupled with a large tone, which will modulate VCO to cause large spur at VCO output, how can I simulate it? I try to use QPSS, but VCO frequency is autonomous, I don't know how to set it as one fund of simulation.

Title: Re: Power supply coupling modulate VCO
Post by Ken Kundert on Apr 25^th, 2011, 1:23am

Use PAC or PXF.

-Ken

Title: Re: Power supply coupling modulate VCO
Post by sheldon on Apr 25^th, 2011, 3:13am

Daxigua,

You might want to try semi-autonomous PSS analysis. It enables you
to include a driven signal with an autonomous signal. Semi-autonomous
analysis is a large signal analysis.

Best Regards,

Sheldon