tubeguy
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San Diego, Ca.
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MM:
I suggest using GoldenGate's SSNA (Small Signal Noise Analysis) to calculate the noise figure of your mixer. SSNA seems to be designed more for receiver/transmitter noise simulations, while CR Noise analysis works better for VCOs. That's my experience, at least.
When setting up SSNA, the Input Source can be a vsin, psin, or port, and the Output Probe can be a port, psin, or pmeter from the goldenGateLib. Further down the page, if you select Compute Noise you will be given the option of DSB, SSB, or IEEE noise figure. That's pretty much it! When you run the simulation it will print out the noise figure in the output log, and you can plot it from the results form under Post Process ("NF").
You might also want to do a table of noise contributors. This is hidden at the bottom of the SSNA Options page. I usually select "Types" and then leave all three options checked. You can also select "Expanded" and it will give additional information like flicker/thermal etc. Kind of nice. This table is also accessed under Post Process in the results form ("NCT").
Hope that helps. I didn't answer your questions specifically because it sounds like you are/were trying to use CR, rather than SSNA. Post back if you still need specific answers to those.
JR
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