WHY there is no Tutorial on Designing FSS using Ansoft Designer

HI
I am wondering why there are no tutorials explaining how to design Frequency selective surfaces FSS using Asnoft Designer.

If You know such tutorial Please put here.

Thanks in advance for any help.

There's a tutorial about phased arrays using floquet ports which may be helpfull, thats a link to it http://www0.egr.uh.edu/courses/ece/E...et%20ports.pdf

Thank you Nour, this tutorial is on HFSS software not Ansoft Designer, but thank you for your reply that was encouraging,
I hope I will find a tutorial of designing FSS using Ansoft Designer not HFSS

best regards