How come for every EM simulation I do with a transistor, I don't get any gain higher than 0 during EM simulation and no resemblance in s-parameter graphs? I biased the transistor correctly in the ADS schematic and it simulates perfectly, but when im specifying the pins on the transistor from the ADS layout, I don't get any accurate s-parameter simulation. why?
Later I decided not to use vias, a ground plane, or even the bias network anymore. I am making everything as simple as possible with and just wiring the source pins to ground, the gate for port 1, and the drain for port 2. I am using the SOT343 model (which goes with the ATF55143 transistor) and still no close approximations in s-parameter simulations, why? I put my pins in the correct order as the schematic to the layout and no progress has been made.