RED certification

[victor]

For RED certification of our product, using the nRF51822, we need to provide documentation about "Block diagram showing antenna, radio receiver and transmitter parts as well as local oscillators, mixers and IF stages". But in the available documentation for the chip we find virtually nothing about the actual radio architecture. Would you be able to provide a little more details?

[endnode]

I'm pretty sure this talks about the architecture of your PCB not chip (similarly for FCC you need to submit at least block diagram of your embedded device, usually also schematics and PCB layout). Simply because no chipmaker publishes details about their intellectual property such as how exactly 2.4GHz radio stage works on silicon itself.