The Signal Path is no joke. EE's will say "RF is voodoo" and looking at HF to Wifi, you think it's a little bit hyperbolic. Then TSP goes and dissects some 80GHz monster and you realize that you know absolutely nothing about electronics and you should have stuck to software.

I'm excited to hear he's getting a crack at this and I can't wait for that video to drop.

This is where the good stuff is gonna happen.

Still though, phased arrays aren't all that complicated conceptually. The little chips are probably TX/RX switches and the larger chips probably do block up/downconversion, mixing, and provide controllable phase delay.

It is the overall integration and combining of 600+ signals that is the real impressive part. ST Microelectronics deserves as much credit on this as anybody. Truly stunning.