dual pifa antenna for wlan 2.4ghz/5.5ghz

hi

i am doing project about dual frequency planar inverted f andtenna for wlan application (2.4 and 5.5 ghz) antenna and i am facing some problems about the feeding and parameters calculations and i want to use coaxial feeding probe. please i really need help.

this is the type of design i want

Help with what?

This is the solution.

https://www.edaboard.com/thread269187.html