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Simulators >> RF Simulators >> Pnoise is giving me wrong results
https://designers-guide.org/forum/YaBB.pl?num=1461432252

Message started by iVenky on Apr 23^rd, 2016, 10:24am

Title: Pnoise is giving me wrong results
Post by iVenky on Apr 23^rd, 2016, 10:24am

I am running pnoise for a VCO that I built for 3 different values of resistors. Those resistors are placed after an ideal vcvs so that changing that value shouldn't change anything; bottom line is that I am not expecting to see any change in the pnoise results because of this. Now, I am including the pnoise results with this post.

As you can see, for one case, the pnoise gives me a different result near the minimum frequency that I have specified which is 1 kHz.
I looked at the spectre.out file and found that in that case (first resistor), the estimated line width turned out to be different. Could you please explain me why this change occured, as I am not expecting any change?

Here's the link to spectre.out
https://drive.google.com/file/d/0B7_0oRjalPc5ZXFKa1Eta25wWlk/view?usp=sharing