Hello,
I am trying to develop BLE custom board. It's my first time dealing with Nordic MCUs and RF. I want to understand if I am doing it all correct. Here is a piece of my schematic:
To provide RF front-end I choosed to use 2450AT18B100 chip antenna. I have a few questions:
1) Is my schematic correct?
2)Should I use impedance match IC (2450FM07A0029) instead of L1-C3 matching? What are the benefits of using this chip?
3) Is my PCB design correct (see pictures below), especially RF part?
4) Will my board work with default values (L1,C3,C20,L2,L3)? How should I tune this configuration to reach maximum range?
5) Is it ok to provide such reset circuit? Can I ommit it? If I can, are there any other options to reset the MCU?
TOP PCB
BOTTOM PCB
6) Also, will it be a better approach to turn MCU 90 degree counter-clockwise (like in picture below)? Which one is better for radio?
7) Can I move some parts like decouple capacitors and XTALS to the other side of the board?
8) Is it okay to use all R and C in 0402 package?
Thank you very much!
