Carrier isolation system

Details Carrier isolation system Carrier isolation system

1974-09-30

1976-08-03

Griffin, Robert L.

325351, 325467, H04B 168

Patent

active

039732037

ABSTRACT:
A circuit is described for operating on a carrier wave in a transmission signal including a reduced carrier with a single sideband. The carrier wave is isolated, limited, divided in frequency by a predetermined amount, and then restricted in frequency by a band pass filter. The output of the band pass filter is then multiplied in frequency. After this, the carrier wave is mixed with the sideband frequencies and the signal is demodulated.

REFERENCES:
patent: 2227902 (1941-01-01), Hahnle
patent: 2276863 (1942-03-01), Peterson
patent: 2498242 (1950-02-01), Boykin
patent: 3147437 (1964-09-01), Crafts et al.
patent: 3199037 (1965-08-01), Graves
patent: 3541266 (1970-11-01), Klayman et al.

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