cpw feed lines

can any body plz tell me some good links where i can find working and issues realted to coplanar waveguide feed lines for patch antennas

me to have same problem with cpw feed metamaterial antenna feed point ,is any body having idea pls share it

I suggest that please do not get confuse with CPW name.
Just practice microstrip line and place the GND at 1.5 times the substrate height. this will have literally no effect.
Now iterate the distance between the top GND spacing on top to a closer value and remove the GND from Bottom.
Optimize the distance between the RF and top GND for better RL.
You are done.