https://devzone.nordicsemi.com/f/nordic-q-a/72675/impedance-matching-of-nrf52810Hello,is the 3.9nH inductance and 0.8pF capacitance in the official routine the impedance matching of the antenna, or do I need additional antenna impedance matching?en-USTelligent Community 13Fri, 12 Mar 2021 12:33:56 GMThttps://devzone.nordicsemi.com/thread/299466?ContentTypeID=1Fri, 12 Mar 2021 12:33:56 GMT137ad170-7792-4731-bb38-c0d22fbe4515:ed84d636-d368-4f48-8409-ed95dca45fb6Kaja<p>The impedance will be off, so I will say no.&nbsp;<br /><br />Change to the values in the reference design, add matching components for the antenna.&nbsp;<br /><br />To get hjelp with your design:&nbsp;<br />Create a private ticket<br />Upload schematic and layout<br />Ask to get a HW review<br /><br />Best regards,<br />Kaja</p><div style="clear:both;"></div>https://devzone.nordicsemi.com/thread/299463?ContentTypeID=1Fri, 12 Mar 2021 12:23:09 GMT137ad170-7792-4731-bb38-c0d22fbe4515:a5d6b6fd-26d8-4c1c-81d4-73f287efd0e9ticture<p><img src="https://devzone.nordicsemi.com/resized-image/__size/320x240/__key/communityserver-discussions-components-files/4/pastedimage1615551780461v1.png" alt=" " /></p><div style="clear:both;"></div>https://devzone.nordicsemi.com/thread/299462?ContentTypeID=1Fri, 12 Mar 2021 12:20:09 GMT137ad170-7792-4731-bb38-c0d22fbe4515:c02fa5d6-9e60-4a22-bc3a-04d5f42e4d68ticture<p><span class="mceItem mceNonEditable mceInsertMediaItem mceInsertMediaItem mceInsertMediaItemImage" style="color:transparent;height:240px;width:320px;" id="pastedimage1615551536847v1">...</span></p> <p>On the left is our schematic and on the right is the official schematic. Can our design work properly?</p><div style="clear:both;"></div>https://devzone.nordicsemi.com/thread/299440?ContentTypeID=1Fri, 12 Mar 2021 10:38:53 GMT137ad170-7792-4731-bb38-c0d22fbe4515:70e37f55-c4d3-463a-bad4-581d37ad2a02ticture<p><img src="https://devzone.nordicsemi.com/resized-image/__size/320x240/__key/communityserver-discussions-components-files/4/pastedimage1615545492823v1.png" alt=" " /></p> <p>Thank you very much! But if I design this way, can I search Bluetooth signal on my mobile phone?</p><div style="clear:both;"></div>https://devzone.nordicsemi.com/thread/299438?ContentTypeID=1Fri, 12 Mar 2021 10:33:31 GMT137ad170-7792-4731-bb38-c0d22fbe4515:315b0507-a803-4364-bfff-a05ef5b31af7Kaja<p>Hi,<br /><br />3.9 nH and 0.8 pF is the matching components for the radio. You need additional components for the antenna:<br /><img alt=" " src="https://devzone.nordicsemi.com/resized-image/__size/320x240/__key/communityserver-discussions-components-files/4/3250.impedanceGe.png" /></p> <p></p> <p>Best regards,<br />Kaja</p><div style="clear:both;"></div>