> is it possible to focus microwave raditation on a point > yes, it is possible to focus microwave radiation on a point, using specialized antennas and techniques like dielectric lens antennas or reflect array antennas, which can concentrate the microwave energy to a small focal point by carefully controlling the phase of the radiated waves; higher frequencies allow for tighter focusing due to shorter wavelengths.  china says this microwave urugan truck can see drones 4km on radar and 3km away optically, and the beam can destroy targets up to 3km away
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