Hello,
I am trying to use momentum to simulate a CPW lange coupler structure.
As a starting point of the layout, I used a microstrip version, then surround the inputs and coupled sections with "ground" metal as appropriate.
When I try to simulate this with ground references associated with each of the four single-ended ports, momentum gives following error message:
WARNING: Unable to correctly process port XX.
ERROR: Same port assigned to two different segments. Please modify geometry.
The structure simulates fine using single ports with no ground references (as in MS case).
I am trying to use momentum to simulate a CPW lange coupler structure.
As a starting point of the layout, I used a microstrip version, then surround the inputs and coupled sections with "ground" metal as appropriate.
When I try to simulate this with ground references associated with each of the four single-ended ports, momentum gives following error message:
WARNING: Unable to correctly process port XX.
ERROR: Same port assigned to two different segments. Please modify geometry.
The structure simulates fine using single ports with no ground references (as in MS case).
Sep 20, 2006 6:48 AM