RE: PCA10005 - SMA edge Antenna Impedance Matching

pastisprologue — Tue, 18 Nov 2014 14:48:01 GMT

Thanks! That's a very useful tool. When I was doing my calculations, I was using a microstrip calculator and not the coplanar waveguide. Thanks again!

RE: PCA10005 - SMA edge Antenna Impedance Matching

Asbjørn — Tue, 18 Nov 2014 09:02:14 GMT

The trace between the discrete matching network on PCA10005 and the SMA is calculated by using the "CoPlanar Waveguide" calculator in "AppCAD" from Agilent/HP. You input the thickness of the substrate, what kind of substrate it is and it gives you the width of the trace you need in order to have a 50 Ohm trace.

The stack up of the PCA10005 is 1.6 mm thick FR4 with two layers. There's no inner layer on the PCA10005. 1 oz copper is what we use.

Also, if you want to Nordic support team to have a look at your design before you send it off to production, please register at www.nordicsemi.com/.../Support and upload your design files there.