help needed in antenna simulation in hfss

hi
can anybody help me in the simulation of a log-periodic antenna
i mean, the simulation steps in hfss
i have drawn a model in hfss using now i dont know what should be the next step for simulation like, how to give an input feed to the antenna and excitation etc
thankx

Dear i_m_aries2,

Why don't you for starters, use the Lumped Source to feed the corresponding dipole in your LPDA? I would think it is much easier for you. Do go through your user manual or a help-search on 'Lumped Source' in HFSS to find out more.

Hope this helps,
Whatsen