Large grid array of metal sphere -- how can I reduce the size of the mesh
I am trying to simulate an antenna near large grid array of metal sphere (total sphere =5000, diameter is very small than wavelength). But the default setting of HFSS is generating millions of tets. I am thinking to make boundaries of PE for the sphere, also I would like HFSS not to mesh the sphere.
Is there a way to reduce the mesh size?
What can be other ways to simulate such a structure?
Should I try in Savant?