Gilbert Cell Mixer is a "four quadrant multiplier" for small input level ideally.
delinqfour wrote on May 13th, 2010, 6:54pm:a gilbert cell mixer needs to be driven by LO, am i right?
Right.
delinqfour wrote on May 13th, 2010, 6:54pm:so if i ground the LO input, i will be turning off a couple of transistors in the circuit which makes the output port open, so ideally i get nothing at the output, correct?
Correct if it could be very ideal, although the output ports are not open state.delinqfour wrote on May 13th, 2010, 6:54pm:but if i ground the RF input, same thing happens
Yes,
if it could be very ideal.Again, observe output of actual mixer by actual instruments not by EDA-Tool-Play.