For instance, the today's great intellectual property of IEEE still has no idea of the simplest and most reliable DSB-SC demodulator which I did (in 1979) as an MS thesis, and I used it for many years, in the 80's, in my private short-range (3 km) RF voice links. It can, unlike the two known ones of Costas Loop and the Squaring method, be integrated as a low-cost IC (it doesn't need I-Q signals or a selective filter).
?
I mean, they made themselves so protective to the point they cannot have any idea of an Innovation, if not invention, if made outside their world :)
?
Kerim
?
