PCB design guidelines?

[Giovanni]

Hi. Where i can find some information and guidelines to do a good RF PCB with nrf51822? thank you for your support

EDIT 02/02/2015 Where i can find " nRF51822 Reference Layout Files with STMicroelectronics BAL-NRF01D3" ? Please Help me.

[Asbjørn]

Here are the general design guideline for the nRF51822 QFN version.

For the latest versions of nRF51822 we have put up a product change note saying that you are likely to fail the Korean regulatory with the nRF51822 QFN and the BAL-NRF01D3 from ST. Please see page 2 of PCN-082. The BALF01D3 performs better or baluns from Johanson Technology.

Follow the guide lines closely, preferable copy the schematic and layout on your application.

You might also see some benefit from reading about antenna design and tuning. - Antenna tuning. - Antenna design.