https://devzone.nordicsemi.com/f/nordic-q-a/5332/pcb-design-guidelinesHi. 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 &quot; nRF51822 Reference Layout Files with STMicroelectronics BAL-NRF01D3 &quot; ? Please Help me.en-USTelligent Community 13Fri, 06 Feb 2015 14:35:16 GMThttps://devzone.nordicsemi.com/thread/18629?ContentTypeID=1Fri, 06 Feb 2015 14:35:16 GMT137ad170-7792-4731-bb38-c0d22fbe4515:392d57e3-fe0f-4baf-98d3-4c3638fda0c4Giovanni<p>Thanks for your reply. With Altium There is a rapid method to copy referance layout in my pcb project?</p><div style="clear:both;"></div>https://devzone.nordicsemi.com/thread/18628?ContentTypeID=1Tue, 03 Feb 2015 10:27:27 GMT137ad170-7792-4731-bb38-c0d22fbe4515:65feeb74-73df-42c7-8ae7-384653e0ea6dAsbj&#248;rn<p><a href="https://www.nordicsemi.com/eng/nordic/download_resource/20348/8/91576778">Here are the general design guideline for the nRF51822 QFN version.</a></p> <p>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. <a href="https://www.nordicsemi.com/eng/nordic/download_resource/24631/4/38026782">Please see page 2 of PCN-082.</a> The BALF01D3 performs better or <a href="http://www.johansontechnology.com/integrated-passives/chipset-specific-ipc/nordic-semiconductor.html?highlight=WyJub3JkaWMiXQ==#.VNCiTy709Og">baluns from Johanson Technology.</a></p> <p>Follow the guide lines closely, preferable copy the schematic and layout on your application.</p> <p>You might also see some benefit from reading about antenna design and tuning. <a href="https://www.nordicsemi.com/eng/nordic/download_resource/20344/6/75331643">- Antenna tuning.</a> <a href="https://www.nordicsemi.com/eng/nordic/download_resource/19932/6/5759024">- Antenna design.</a></p><div style="clear:both;"></div>