Full Flex PCB

[WernerVorster]

Hi

We've developed a wearable device and are changing from a rigid PCB to a full flex PCB. I want to know what adjustments is needed for RF output because of this change.

Thanks

[Marjeris Romero]

Hi Werner,

You can follow our reference design which can be downloaded from here. The only change you will need to do is to adjust the values of the components of the nRF5x matching network to make sure the transmission line between the nRF5x matching network and the antenna matching network remains at 50 ohms, since a thinner substrate will alter this. If you want you can also send your design (schematic & layout) to us for review before production.

Best Regards,

Marjeris