[[EM.Picasso]] allows you to simulate doubly periodic planar structures with periodicities along the X and Y directions. Once you designate your planar structure as periodic, [[EM.Picasso]]'s Planar MoM simulation engine uses a spectral domain solver to analyze it. In this case, the dyadic Green's functions of periodic planar structure take the form of doubly infinite summations rather than integrals.
[[Image:Info_icon.png|40px]] Click here to learn more about the theory of '''[[Planar_Method_of_MomentsBasic_Principles_of_The_Method_of_Moments#Periodic_Planar_MoM_Simulation| Periodic Green's functions]]'''.
{{Note| [[EM.Picasso]] can handle both regular and skewed periodic lattices.}}