Hello Veibll,
I got now in the meantime the information, that for providing FCC certificates, the lab has to be certified - and most labs are doing that only in the USA.
The test houses, I contacted in Germany don`t have the certificate.
Do you have a recommendation of a test lab in the US...
Hello IRstuff,
I tried to dremel the shield layer away. Unfortunately, as it`s a flex PCB, the layers are so close to each other that I was not able to do it without damaging the coil.
I will need another production run without shield.
Do you think, there is an opportunity to integrate the faraday box (as the PCB has a thickness of few microns only, it would look more like a Faraday sheet) into the PCB design?
Or is a certain distance of the Faraday box from the coil required to avoid the phenomena explained in the comments above?
Many thanks for the recommendations! I will remove the backside and check if this is the root cause.
My understanding is that a EMC is required for the coil.
What do you recommend to solve this topic in a thin way?
We want to replace a wire would coil (parameters and photo see attachment) by a PCB coil as transmitter coil for inductive charging.
We designed the coil according to the original dimensions (except thickness of conductive path).
Unfortunately, the receiver coil does not detect charging current...
