Microwave wireless power transfer with HFSS OR FEKO

with great pleasure , i am writing this email in order to ask how to simulate via FEKO OR HFSS the Microwave wirless power transfer
First i am phd student whose my subject is improvement of efficiency of microwave wireless power transfer by using smart antenna, and i am really motivated to simulate with feko or HFSS my thesis...altough i have sought many sources in the web to get started with feko , i didn't reach the documentation concerning wireless power transfer,this is why i am asking for helping me in my thesis.