I modeled the VCO using LISO to find a model of the electronic noise entering the actual VCO. I will double-check all the resistor and capacitor values with the actual VCO to make sure I'm modeling what I actually measured and post the file I used. I also converted the electronic noise into frequency noise of the VCO assuming the conversion factor of 680 kHz/V (found by measuring the frequency response around 80MHz - previous post).
I will work on replacing resistors tomorrow, after looking at my model to see which have the greatest impact on noise, and see if that decreases the measured electronic noise. |