nRF52840 Module PCB Manufacturing

RE: nRF52840 Module PCB Manufacturing

Radio — Tue, 11 Aug 2020 16:28:20 GMT

Thanks!!

RE: nRF52840 Module PCB Manufacturing

Kaja — Wed, 05 Aug 2020 08:37:58 GMT

I see,

so regardless of what antenna, and type of PCB the track between the radio matching network and the antenna should be a 50 Ohm transmission line. This means that you have to calculate the width and distance to ground, based on what pcb, substrate you end up using.

Best regards,
Kaja

RE: nRF52840 Module PCB Manufacturing

Radio — Mon, 03 Aug 2020 15:49:44 GMT

Hi Kaja,

Thanks for the reply.

I am trying to use the same bluetooth antenna provided in the nRF52840 dongle reference design. When I open the given hardware files, the substrate definitions and the microstrip dimensions are:

Dielectric - 4.8

h - 78.74 mil

trace width - 10 mil

Therefore, I wanted to make sure these same dimensions are preserved, otherwise it is going to affect antenna matching. If there are any further details on the nRF52840 Dongle subrate material please share with me.

Thanks

RE: nRF52840 Module PCB Manufacturing

Kaja — Fri, 31 Jul 2020 11:56:30 GMT

Hi,

see: https://www.pcbgogo.com/blog/What_Is_High_TG_PCB_.html

you should figure out what's the best for your specific design, discussing with the manufacture house.

Filled and capped vias is recommended to ensure good soldering, see our app note: Circuit Board Guidelines for aQFN Package

Best regards,
Kaja

RE: nRF52840 Module PCB Manufacturing

Radio — Wed, 29 Jul 2020 17:42:55 GMT

Sure Thanks!

RE: nRF52840 Module PCB Manufacturing

Kaja — Wed, 29 Jul 2020 14:48:51 GMT

Hi,

I will get back to you within the end of the week.

Best regards,
Kaja