DC baising of Gilbert Mixer

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Foufou

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Hi
using ADS, when we define the correct DC biais values of the RF and the LO port to have transistors working in saturation for exemple Vdclo=1.2V and VdcRF=1.5V, when I finish the hole design, how could I replace the DCs tensions used ? using Vdd tension of my circuits
thinks

To do, we sould add the transistors like in figure attached,
but the question is how could I manipulate W/L (of the added transistors)to have the Desired tensions
Help and exemple
thanks[/img][/GVideo]
 

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