January 12, 2022 at 10:58 ammm_candelaSubscriberJanuary 12, 2022 at 10:14 pmGuilin SunAnsys EmployeeThis is normal since FDTD is a discrete method.
There are basically two methods to get smoother image:
1: use finer mesh size. The grin spots you observed on the image is actually from the discrete mesh its self. This is the fundamental way to improve the result accuracy. You may need to increase the number of PML layers to suppress reflection.
2: you can interpolate the result. For example using
interp - Script command
spline - Script command
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