is there anyone help me checking the antenna

[jason]

i need a help with the attenna design. here is the eagle files, i'm not sure it is fine. i used a Balun BAL-NRF01D3 and my board thickness is 0.6mm. i need to know the copper thickness of the antenna and size. thanks!

[Hung Bui]

Hi,

You can follow this application note to design your antenna. Any 2.4GHz antenna with 50 Ohm impedance should work. You can also follow our antenna in the Development Kit or Evaluation Kit as a reference.

It should be noted that, you would need to add a tuning network to tune your antenna to match with 50 Ohm impedance requirement. Please follow this application note : http://www.nordicsemi.com/eng/nordic/download_resource/20347/3/8789442 regarding antenna tuning.