Mode Convergence Sweep

- August 30, 2024 at 9:14 pm
  
  ZenerDalf
  Subscriber
  
  Hi I am currently trying to make a taper and have noticed this trend for my mode convergence sweep. Is it normal to use more than 60 modes for a simulation?
- September 13, 2024 at 10:36 pm
  
  Guilin Sun
  Ansys Employee
  
  It depends on the Taper you want to design. Since you are checking abs(S12)^2, which is the refelction, it is normal that more number of modes means lower reflection. and it seems 60 modes might not be enough, except that the taper angle is large. Please refer to those links:
  Convergence testing process for EME simulations
  EME Convergence Testing - An Intuitive Approach
  Understanding EME error diagnostics
  
  Please note that in some cases more number of modes may not necessarily be better.