Hi. I always appreciate to your kindness and fast reply.
I want to extend BLE range from 200m ~ 500m using FEM.
For the first time, I choose SKY66111 but it is not working well because it has only PA module.
So I find out new FEM as your adivce, and it is RFX2411N.
I modified my circuit design as follow :
would you review this circuit?
Thank you.
Hi,
Here is a reference documentation for the RFX2411N that you can follow:
/cfs-file/__key/communityserver-discussions-components-files/4/2047.Nordic-nRF51_5F00_Range_5F00_Extension_5F00_with_5F00_RFaxis-RFX2411N_5F00_Rev2.0.pdf
For the RF out:
For the antenna out reference you can see the schematic for component ad layout, to match the 50 ohm.
Adding two 0.2pF caps at the start of the filter in you layout should be ok.
Otherwise looks ok. maybe contact Skyworks for best guidance on matching network for the FEM.
Regards,
Jonathan
