After applying a a DC voltage to VGN1, 2, and 3, I was able to see the individual gains for each of the amplifiers. I however was not able to get all of them to add up when applying the voltage to all of them at the same time. Another problem we are having is that we can not observe an output at OPP2. When applying a single input to INP2_SE, we can see the signal at OPP1_SE, yet nothing at OPP1. When applying a differential signal across INP2_SE and INP2, we still can not see any output on OPP2, yet the phase of this output looks correct. Is there a way that we can bypass the balun of this circuit?
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