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Momentum RF errror

Question asked by newbiee on Feb 25, 2014

I am simulating a diffrential inductor. When I simulate I get warnings saying, 
1)Layout is electrically large above 625 GHz (space wave radiation)
2)Substrate is electrically large above 0.958 GHz (surface wave radiation)
RF simulation can be less accurate as it ignores radiation
Consider:  - lowering the maximum frequency
           - simulating in MW mode

I am simulating it upto 5GHz, not sure why I am getting this warning.

I hope to get some inputs. 

Thank you very much.