https://devzone.nordicsemi.com/f/nordic-q-a/8189/the-problem-with-nrf51822-qfaa-bal-nrf01d3-pi-network-smd-chip-antennaHi： I used a design with nRF51822-QFAA+BAL-nrf01D3+Pi-network+SMD chip antenna,but it didn t work well.I tested the VDD_PA Pin ,it didn t have a 1.6V voltage(datasheet),that s reason why the antenna didn t work well? Thanks for any help!en-USTelligent Community 13Wed, 15 Jul 2015 07:28:53 GMThttps://devzone.nordicsemi.com/thread/29446?ContentTypeID=1Wed, 15 Jul 2015 07:28:53 GMT137ad170-7792-4731-bb38-c0d22fbe4515:13ea194f-3025-4a7d-9fbf-2a6183668411cobrahzf<p>Hi, Do you have any FAE in China,I do not know how to provide my gerber file to you.Thanks for your answer.</p><div style="clear:both;"></div>https://devzone.nordicsemi.com/thread/29445?ContentTypeID=1Wed, 15 Jul 2015 06:17:08 GMT137ad170-7792-4731-bb38-c0d22fbe4515:29ac23be-8726-4e45-bfc8-a9d8021c2cf0&#216;yvind Karlsen<p>Hi,</p> <p>To give you any indication about this we will need to see your layout, please provide gerber files. If you prefer to keep your design secret, you can make a ticket at the <a href="https://www.nordicsemi.com/eng/Support-Community/Contact-Support-Team">mypage support portal</a>.</p> <p>Most likely your matching circuits are not 50ohm, have you seen the <a href="https://devzone.nordicsemi.com/blogs/655/general-pcb-design-guidelines-for-nrf51/">general PCB design guidelines</a>?</p><div style="clear:both;"></div>