Sure, why not? It depends on the number of elements, of course, but at these frequencies, you can fabricate a LOT of elements for low cost because they're small. Perhaps even chip-scale integration is possible. $1/element is feasible for phased arrays.
The antennas are practically free; the cost comes from phase shifters, amplifiers, etc, which don't see much miniaturization benefit at high frequencies. One day $1 per element is feasible, but definitely not today.
Comments
Sure, why not? It depends on the number of elements, of course, but at these frequencies, you can fabricate a LOT of elements for low cost because they're small. Perhaps even chip-scale integration is possible. $1/element is feasible for phased arrays.
The antennas are practically free; the cost comes from phase shifters, amplifiers, etc, which don't see much miniaturization benefit at high frequencies. One day $1 per element is feasible, but definitely not today.