Patch array antenna with u slot

Dear frnds,

i m working in dual band patch array antenna. i need the tutorial for fixing the feed point in rectangular patch antenna with u slot plz help to design this.

nivashk25@gmail.com

thanks.

Do u have any references that u r following? Is it a coax fed antenna ?

Yes, It is coax prob feed. now i get a guidance from my frnds. do u have any reference paper for rectangular patch antenna array with u slot .?