The availability of very low power, low cost, on-chip, multi-GHz, ultra-stable direct oscillators, resonators, and waveguides will actually find a multitude of uses.
FinFETs Shimmy to 5G’s Frequencies
(Research funded by #DARPA)
https://spectrum.ieee.org/tech-talk/semiconductors/devices/finfets-shimmy-to-5gs-frequencies