https://test-devzone.nordicsemi.com/f/nordic-q-a/88880/nrf21540-matching-components-with-nrf5340Dear Nordic, We are developing nRF21540 + nRF5340 solution. As there seems to be many versions of matching components depending on which source of information is used, could you simply describe which matching components are preferred In betweenen-USTelligent Community 13 Non-ProductionMon, 13 Jun 2022 09:31:30 GMThttps://test-devzone.nordicsemi.com/thread/372069?ContentTypeID=1Mon, 13 Jun 2022 09:31:30 GMT137ad170-7792-4731-bb38-c0d22fbe4515:02142c34-8bbb-4d5b-b118-73af958c33fbuser73165<p>Hi,</p> <p>There is mainly 3 matching networks, the first is the matching network for the radio on the nRF5340, which consists of a Pi network. Here you should follow what is recommended in the nRF5340 reference design. See the outlined components:</p> <p><img src="https://test-devzone.nordicsemi.com/resized-image/__size/320x240/__key/communityserver-discussions-components-files/4/2260.pastedimage1655112335445v1.png" alt=" " /></p> <p></p> <p>RF output from the matching network from the radio should be connected to the input series capacitor to the FEM:</p> <p><img src="https://test-devzone.nordicsemi.com/resized-image/__size/320x240/__key/communityserver-discussions-components-files/4/3731.pastedimage1655112454342v2.png" alt=" " /></p> <p>The components marked in red should be followed as is. The components in the blue square are for matching the antenna. Here you should follow what is recommended in the datasheet of the antenna. For example in the datasheet of the 2450A T18B100 antenna, it recommends a T-network.&nbsp;</p> <p></p> <p>I hope that answers your questions.</p> <p>regards</p> <p>Jared&nbsp;</p><div style="clear:both;"></div>