nrf24l01 antenna

Hi...
I am using Nordic's nRF24L01 single chip RF transciever for my project.
Can anyone help for the antenna design of the same?
I have gone through the example application given in datasheet.
Please its urgent...............

Thanks,
Dipti.

Design data for the antenna is here:

http://www.nordicsemi.no/files/Produ...tenna_HC49.zip

Hi...
Thanks for the reply!
The will be helpful for me...

Dipti.