The article explicitly says it doesn't use a magnetron, but rather "precise solid-state microwave generators... which can be tuned specifically to heat water an

The article explicitly says it doesn't use a magnetron, but rather "precise solid-state microwave generators... which can be tuned specifically to heat water and better targeted [sic] than the magnetrons used in microwave ovens". (I'd have thought magnetrons counted as "solid state" too, as they have no moving parts, but still - they're very clear that's not what this is)