Help for PIFA (cvm-antenna) designing needed

[Anti]

hi.

need some experts on designing pifa.

i've added an application note from national.
it contains an example for 2.45 ghz center frequency.
i need a pifa for 1.89 ghz. i tried to understand their
calculation but i still don't get it...

anybody knows how to get dimensions?

use FR4 as well...
no need to take care of limited space on pcb.

thanks.

 

[spide]

Hi Anti
you could try the hfss antenna design kit, just key in ur parameter and there you go everything is setup for u .