Reply To: Transmission values are very low during s parameter extraction

[Guilin Sun]

" s parameter extraction", do you mean you used S parameter matrix sweep utility? It also uses ports. Please make sure you use exactly the same simulation settings and better to use the same file. Also please make sure the source is not located inside lossy waveguide since it will lose power during propagation, and also check the simulation time and autoshutoff min to see if they are proper. eg, simulation reaches autoshutoff for termination. You can also use time monitor to check.

Without setting details it is difficult to recommend solutions.