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Co-Simulation of a circuit with CPWG Ports

Question asked by ricardoqrp on Mar 13, 2019

Hi, I'm trying to do a co-simulation of a layout that contains an SMA, a filter and an LNA. All the transmission lines are CPWG. For the SMA I used differential ports between the signal port and the 4 grounds. For the filter I'm also using differential ports between the signal port pad, and the ground that is after the pad (on the same top plane). For lumped components I'm also using differential ports between the two pads of the passive device. Please look at the atached image for reference.

My question is, is this the correct way to define the ports? I didn't find any information about this for CPWG lines. If I use ports reference to global ground I receive a warning that the results might be inaccurate for high frequencies.

 

Thank you for your time.

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