https://devzone.nordicsemi.com/f/nordic-q-a/37859/how-to-know-antenna-is-properly-matched-with-icHi, In application note &#39;nWP017 - Antenna tuning&#39;, it provides quite a lot information about how to tune antenna. But, once it is properly tuned, how do I know the matching network is also proper for IC ? I&#39;ve got a VNA to tune the antenna matchingen-USTelligent Community 13Mon, 27 Aug 2018 14:03:09 GMThttps://devzone.nordicsemi.com/thread/145962?ContentTypeID=1Mon, 27 Aug 2018 14:03:09 GMT137ad170-7792-4731-bb38-c0d22fbe4515:fcddc152-b78b-4f2b-b784-bcec91e4a1b6wanyancan<p>Current idea I have in mind is to insert a PA chipset in between IC and matching network.&nbsp;</p> <p>I can find a PA with power level indicator output.&nbsp;</p> <p>By&nbsp;setting the radio frequency at each channel from 2400 to 2480,</p> <p>and let the 52832&#39;s ADC measuring the PA&#39;s power level indicator (analogue voltage output).</p> <p>It probably is kind of scalar power meter.&nbsp;</p> <p>Please let me know how to do it more quickly or in a professional way without breaking the IC and antenna connection.&nbsp;</p><div style="clear:both;"></div>https://devzone.nordicsemi.com/thread/145961?ContentTypeID=1Mon, 27 Aug 2018 14:00:58 GMT137ad170-7792-4731-bb38-c0d22fbe4515:640a4b69-4cd2-4e2a-b780-c8fef8b31df4ketiljo<p>You have to cut the track between the matching network at the 50 ohm point. Measure S11 into the antenna using the VNA as described on nWP017. Then measure S11 into the matching network with the chip in TX or RX mode. Both measurements should be as close to 50 ohm as possible.&nbsp;</p> <p>You have to physically break the connection between the chip and the antenna to do the measurements.&nbsp;</p> <p>&nbsp;</p> <p>&nbsp;</p><div style="clear:both;"></div>