Need help with 2band patch (2.4 & 5 GHz) - CST

I would appreciate If somebody shares some experiences, I need it for my project at school. Thanks

I have to design ONE patch with FSS ground plane

this antenna should work at Wi-Fi bands (2.400GHz - 2.483GHz and 5.15 - 5.35 GHz)
substrate FR4 with Er=4.4 and thickness ≈ 1.6mm