Hi Tom, thank you! I was asking because the recommendation I got was to use a microstrip feeding the antenna, and for it to have 50 ohm with an FR4 PCB with the most usual PCB parameters, the track width should have about 3.2mm, (
https://www.eeweb.com/tools/microstrip-impedance, T=1.37mil, H=1.6mm, W=3.2mm, Er=4, Z=50.3 Ohm). Keeping all the PCB parameters and changing the track width to 1.27mm the microstrip impedance will rise to 81 Ohm. But of course, the real results are the ones that are important, particularly with RF where there are many other things that impact on the real world results! I'll have to make a PCB and will keep you posted about the final result :-)
Best regards
Fernando