https://devzone.nordicsemi.com/f/nordic-q-a/10254/the-impedance-matching-of-pca10028-referance-layouthi ： I get the PCA10028 layout, and find that the impedance matching demand that the impedance of transmission line is 50Ω as shown the following picture. the mid-layer1 and mid-layer2 of the PCA10028 layout are cut off, so I am confused about the impedanceen-USTelligent Community 13Mon, 16 Nov 2015 13:33:56 GMThttps://devzone.nordicsemi.com/thread/38064?ContentTypeID=1Mon, 16 Nov 2015 13:33:56 GMT137ad170-7792-4731-bb38-c0d22fbe4515:9ef2b887-79b2-4934-9e2a-c42a97f91660Susheel Nuguru<p>The impedance in this point is not 50 ohm. It will only be 50 ohm at the end of the matching network, after C5. The inner layers are removed do reduce parasitic capacitance to ground. Keep the components close to reduce track inductance.</p><div style="clear:both;"></div>