https://devzone.nordicsemi.com/f/nordic-q-a/18084/reference-design-for-nrf52-smaller-footprint-pcb-ant-or-chipI know that Nordic has published a reference antenna design with the nRF52DK. However, I would like to develop a much smaller module with minimal antenna PCB trace or antenna chip. Does someone have a reference design for that to save up the work of tryingen-USTelligent Community 13Fri, 02 Dec 2016 00:01:44 GMThttps://devzone.nordicsemi.com/thread/69786?ContentTypeID=1Fri, 02 Dec 2016 00:01:44 GMT137ad170-7792-4731-bb38-c0d22fbe4515:d856ccb7-a6ac-4022-abd4-3857267a0784Shay Ohayon<p>Bjorn, can you explain or comment on why P0.26 and P0/27 are connected via 10k resistors to P0.08? What is the purpose of that? Is this suppose to be some sort of pull up/down for the SDA/SCL?</p><div style="clear:both;"></div>https://devzone.nordicsemi.com/thread/69785?ContentTypeID=1Thu, 01 Dec 2016 12:56:33 GMT137ad170-7792-4731-bb38-c0d22fbe4515:86c2f598-a26f-40f9-a8e6-7ea2982947aabjorn-spockeli<p>Happy to help :)</p><div style="clear:both;"></div>https://devzone.nordicsemi.com/thread/69784?ContentTypeID=1Thu, 01 Dec 2016 12:53:43 GMT137ad170-7792-4731-bb38-c0d22fbe4515:737aa4ea-bbd0-44db-a276-4f1d4c7ebbccShay Ohayon<p>Thanks Bjorn. Just what I was searching for!</p><div style="clear:both;"></div>https://devzone.nordicsemi.com/thread/69783?ContentTypeID=1Thu, 01 Dec 2016 09:43:13 GMT137ad170-7792-4731-bb38-c0d22fbe4515:5a928406-8880-4d4d-a46f-9bd338a87a07bjorn-spockeli<p>Hi Shay,</p> <p>My suggestion would be to base your design on the <a href="http://infocenter.nordicsemi.com/topic/com.nordic.infocenter.nrf52/dita/nrf52/app_example/solar_beacon/introduction.html?cp=2_6_0">nRF52 Solar Powered Sensor Beacon</a>, you can find the hardware files(i.e. gerbers, BOM and schematics) <a href="http://infocenter.nordicsemi.com/pdf/Solar_beacon_HW_v1.0.zip">here</a>.</p> <p>Best regards</p> <p>Bjørn</p><div style="clear:both;"></div>