{"id":364416,"date":"2024-04-26T16:25:36","date_gmt":"2024-04-26T16:25:36","guid":{"rendered":"\/forum\/?post_type=topic&p=364416"},"modified":"2024-04-26T16:25:45","modified_gmt":"2024-04-26T16:25:45","slug":"ansys-q3d-simulation","status":"closed","type":"topic","link":"https:\/\/innovationspace.ansys.com\/forum\/forums\/topic\/ansys-q3d-simulation\/","title":{"rendered":"Ansys Q3D Simulation"},"content":{"rendered":"

Hi 
I have a PCB 6 layer board which i am simulating in Ansys Q3D to extract plane inductance between two different points. Initially i defined two points as mentioned in picture as A to be the source and sink and i got about 25nH inductance i then changed the terminal and excitation to point B and added a smaller piece of sheet as well for one terminal which i unite with main plane. At point B i got like half of inductance as compared to point A. Why is this so? a difference of 1 to 2nH can be expected but this much difference is not logical at all.
Any help regarding this will be appreciated. Can i add sheet in way like i have added and unite it with board plane?
My workflow is like this 
1)I connected different layers together to form a connected conductor.
2)Then i unite the whole assembly
3)Assign excitation(sorce\/sink) to the single net
Is there something wrong with workflow?<\/p>\n

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