changes in count values in sweep affect output?

I'm doing my project in Ansoft HFSS.while changing the values of sweep the output varies in return loss.Also when start & stop frequency is changed the output varies .Is there any optimum value for start,stop,count values.

Hi,

Which solver are you using? Iterative or Direct? If your structure is not too big and complex, Direct may give you better results. Also, I would make sure that the solution frequency is in the middle of that frequency sweep range. If you have an expectation of where your result is not that accurate, you can add more point around that frequency and also change the solution frequency to that one. Because the mesh for the adaptive solution is optimized only for the solution frequency, it is possible that the accuracy of the results could vary at frequencies significantly far away from this frequency.

Joline.