I have a single receiver circuit which has both a VCO and a mixer (from supply to gnd).
I need to simulate Noise figure of this Receiver. Please let me know the correct simulation setup.
This is what is happening when I'm using hb with hbnoise.
In 1st case, I'm giving two tones in hbnoise, one of which being the oscillation frequency fo, and the other being RF frequency frf, provided the sweep type is absolute. But it isn't considering the second source to be possibly an input source and therefore the NF option is disabled. I'm checking the Output Noise in this case.
In the 2nd case, I'm disabling the frf source and doing a 1 tone hb simulation and checking the Output noise again.
Both gave the same graphs for output noise.
Is this the correct way to measure?