Possibly related to this patent?
https://patents.google.com/patent/US10144532B2/en
Note the patent holder.
I notice that Dr. Hal Puthoff is on the list of citations in the patent. He’s up there with Jaques Vallee for trying to encourage the scientific establishment to look at the UFO phenomena seriously.
But isn’t that patent essentially the same type of microwave propulsion that the British DIY-er was putting together a few years back?
Salvatore Cezar Pais?