Probably a mix of things. QCM has a lot of IP/Patents in this space so there are some "intuitive" engineering solutions that ... can't be pursued w/o a license.
But even if there was no legal blockers, RF engineering is a _whole other ball game_ compared to the "routine" circuits used in CPUs. I don't just mean from a "well, the schematic sure looks different" perspective, I mean from a "how you build it in the fab" perspective as well.
TL;DR: if electricity is magic, RF is black magic.
Probably a mix of things. QCM has a lot of IP/Patents in this space so there are some "intuitive" engineering solutions that ... can't be pursued w/o a license.
But even if there was no legal blockers, RF engineering is a _whole other ball game_ compared to the "routine" circuits used in CPUs. I don't just mean from a "well, the schematic sure looks different" perspective, I mean from a "how you build it in the fab" perspective as well.
TL;DR: if electricity is magic, RF is black magic.