About PCB microstrip line antenna design

Hi:
We are designing a WLAN card system, But we have not our own PCB mircorstrip line antenna pattern, then we want to design it ourself,but we are lack of its experience,then Who can help me OR instruct me some secret....thanks very much!

:D

Hi.... You can using the Invert -F feed method, it can reduce the size by half compare to regular one, also can obtained about 0.5 to 1.5 dB gain.

Hi,

wat frequecy is ur wlan card system working on? Do you require dual frequecy? What application is it for? Where are the base transmiter placed? Need more input from you to help with design. If not too complicated application, maybe a slot/loop will do the trick. :)

Cheers,
Element7k