German decimetric radar was well ahead of British radar, and they were quickly catching up on centímetric, emulating american magnetrons ( from the 3cm h2x ), but pursuing their own line of investigation. German engineering was recognized by the British to be excellent (they had this transpired after the bruneval raid ) as compared to theirs, And the Germans reckoned the British sets to be clumsy And bulky ( in their wording, "too much air in the box" ).
True ,the British had good ideas on radar but, as the americans often said, it was up to them to put it in hardware good enough to be made in mass numbers. They had very good production engineers, the brits dont. Us radar was damn good, not the British ones.
Also, as often unrecognized by anglo-saxon sources, the resonant magnetron was not invented in the UK, it was in germany by hollman.
Much of my amateurish arguments can be well researched in that website, as well as in the excellent fritz trenkle's books ( both published and unpublished ).
Although many cios/bios/fiat reports are interesting, those made by British officials differ from those made by us personnel, more willing to acknowledge the german achievements. From memory I recall one on German aircraft fire control, in whih they were extremely advanced, where, despite the many types refered and the interesting techniques described, the authors concluded that German technology was behind the British acomplishments, whatever they were.
Many articles in that website cite the British proclivity to underestimate foreign technology, even in the many conferences Mr. Bauer attended and participated with his own research.