I find it lacks any substantial basis. You can elaborate of course but really I see no merit here.
Oh...i am sure that you don't see any merit
,but i am equally sure that you will perfectly see ,instead, any empirical evidency 1) F-22's airframe is not constructed with polyetherimide composites It is NOT radar transparent in any scattering regime !2) That lens
(leaving even a part the problem of its inherently limited RCS magnification's magnitudo capability
....) cannot in any way mask F-22's airbody diffraction field for almost ALL most important re-radiating cones for unavoidable geometrical questions
The element in question, in facts, is placed in the third rear segment of lower body fuselage
( just after weapon bay ) where the frame, already "covered" by the the bow section for effect of the asymptotic curvature starting at the duct opening
, join with aft section.
The obvious empirical result of what just said is that the lens in question would be TOTALLY outside ANY reradiating point not only of the fundamental over-median line frontal projection
(critical in BVR air to air engagements)
but even perfectly same-plane frontal aspect !! 3) F-22s also in peacetime over NORAD patrol missions carry similar lower fuselage recessed Luneberg Lenses, but avoid ,obviously, to mount anywhere possible fuel tanks to retain its reduced RCS 4) When engaged in real peacetime interception missions of real "enemy" aircraft over the same NORAD areas F-22s have always mounted external fuel tanks
The effect on RCS of which in the critical frontal projection are self-evident
5) Instead to rely on the comical, demented theories circulating on hopeless places such as F-16 . net and similar
(where AIM-120B has an engagement range of 105 km
,AIM-120D 200 km
, missiles with 30G pull charge limits render irrelevant aircraft capable to produce 9G maneuvers
, F-22 has a relevant RCS of 0,0001 square meters
, USAF F-15s had won engagement against SUI-30MKI at Red Flag 2008
etc..etc...) if you are seriously interested in the subject in question you could start with a book like "Computer simulation of aerial target radar scattering recognition, detection, and tracking" by Prof. Gorshkov, S., Leshenko, S., Ollenko, V., Sedyshev, S. , Sukharevskiy, O.
, it is also present a fair model of the B-2's RCS with RAM at different radar frequencies
; i am sure that ,after , you will finds some positions and "theories" on similar subjects simply nauseating.