https://devzone.nordicsemi.com/f/nordic-q-a/66358/antenna-nrf21540Hi all, Can i use only one antenna for output AN1 and AN2 ? Thanks you,en-USTelligent Community 13Fri, 25 Sep 2020 09:12:42 GMThttps://devzone.nordicsemi.com/thread/271468?ContentTypeID=1Fri, 25 Sep 2020 09:12:42 GMT137ad170-7792-4731-bb38-c0d22fbe4515:69759f12-2857-41ac-b991-7671a44b737aAndreas<p>Hi,</p> <p>&nbsp;</p> <p>You can use the same antenna for both TX and RX. Which ANT pin is used is selected by toggling the ANT_SEL pin.</p> <p>&nbsp;</p> <p>Best regards,</p> <p>Andreas</p><div style="clear:both;"></div>https://devzone.nordicsemi.com/thread/271437?ContentTypeID=1Fri, 25 Sep 2020 07:09:46 GMT137ad170-7792-4731-bb38-c0d22fbe4515:6e2fb263-ab75-4f9b-ad2a-e748f9b167deNPL<p>Thanks for your reply.</p> <p>I need use TX and RX to transmit and receive data. If i cannot use one antenna for both, i will use 2 antenna. I will use it for nrf52810.</p><div style="clear:both;"></div>https://devzone.nordicsemi.com/thread/271431?ContentTypeID=1Fri, 25 Sep 2020 06:39:20 GMT137ad170-7792-4731-bb38-c0d22fbe4515:4e4affd5-5a7a-4a98-8146-b8edefcd9a7dAndreas<p>Hi,</p> <p>&nbsp;</p> <p>The ANT pins are single-ended, you can connect the antenna to only one of them, not both. If you only need one antenna in your design it is fine to just connect one of the ANT pins.</p> <p>&nbsp;</p> <p>Best regards,</p> <p>Andreas</p><div style="clear:both;"></div>