https://devzone.nordicsemi.com/f/nordic-q-a/30176/nrf51822-beacon-weak-signal-with-balun-and-chip-antennaI&#39;m building home temperature sensor with custom pcb design. I&#39;m using balun( 2450BM14E0003 ) and chip antenna( 2450AT42B100 ) from Johanson Technology. Beacon works and it transmits the signal, but it is very weak (~ -95dBm), it&#39;s maximum range is abouten-USTelligent Community 13Thu, 08 Feb 2018 10:29:44 GMThttps://devzone.nordicsemi.com/thread/120244?ContentTypeID=1Thu, 08 Feb 2018 10:29:44 GMT137ad170-7792-4731-bb38-c0d22fbe4515:b4530b0d-e533-4e7c-b660-67a0018c1157Hung Bui<p>Yes, you can try making the trace wider and add the PI network for tuning. But if you don&#39;t have equipment to tune that wouldn&#39;t help.&nbsp;Improve ground would really help.</p><div style="clear:both;"></div>https://devzone.nordicsemi.com/thread/120215?ContentTypeID=1Thu, 08 Feb 2018 09:01:03 GMT137ad170-7792-4731-bb38-c0d22fbe4515:3ab68bdc-4cda-4f5a-b1c6-22860d316070romeoordos<p>May absense of Pi network between antenna and balun cause the issue?</p> <p>Should I make UBAL trace wider?</p><div style="clear:both;"></div>https://devzone.nordicsemi.com/thread/120212?ContentTypeID=1Thu, 08 Feb 2018 08:49:53 GMT137ad170-7792-4731-bb38-c0d22fbe4515:34c79b9e-af1d-446d-9ea5-df6b83541f37Hung Bui<p><span>2450BM14E0003 should be OK with our nRF51822. But the grounding has to be improved. You should have more ground plane on both side.&nbsp;</span></p><div style="clear:both;"></div>