zangcn
Newbie level 3
Hello,
I am currently trying to simulate an output balun for a power amplifier with ADS Momentum. I am having trouble with some ports for the DC-blocking capacitors though. I set up the simulation with a finite ground plane and want to simulate with ports for the blocking caps on both the ground plane and the microstrip line on the unbalanced side of the balun. I defined the ports as differential ports but the log tells me there is a problem at higher frequencies (distance of the pins electrically large). I do know that I normally can define GND reference pins for each pin. However in this certain case what is the best way to define the ports as I do have caps on both sides?
I am currently trying to simulate an output balun for a power amplifier with ADS Momentum. I am having trouble with some ports for the DC-blocking capacitors though. I set up the simulation with a finite ground plane and want to simulate with ports for the blocking caps on both the ground plane and the microstrip line on the unbalanced side of the balun. I defined the ports as differential ports but the log tells me there is a problem at higher frequencies (distance of the pins electrically large). I do know that I normally can define GND reference pins for each pin. However in this certain case what is the best way to define the ports as I do have caps on both sides?