yagi uda hfss help plz

i want to do a yagi antenna of 5 element.can anyone help me?i find some tutorial about dipole using HFSS i hope if some one have the same way in yagi uda antenna thanks

any help dear friends
can any one tell me about the rules for designing

There are numerous posts concerning yagi's here and in the net,

Try searching both and if you still have trouble explain what you found and describe the continuing problem more completely.

thanks alot for ur reply i found alot of information and i found many desgines ready one but what i want how they design it i mean how they find the lenght of the reflector dipole directors in which basics are they going

the directors are typically slightly longer than a half wavelength.

I posted a reference to a Yagi-Uda book a while ago. Search (on this site) for that post.