Communications: radio wave antennas – Antennas – Balanced doublet - centerfed
Patent
1976-02-17
1977-03-15
Griffin, Robert L.
Communications: radio wave antennas
Antennas
Balanced doublet - centerfed
343 65R, 343 68R, 343100ST, H04B 714
Patent
active
040126960
ABSTRACT:
A multi-rate digital command system is disclosed which uses the composite signal of a .mu.-type ranging system as a subcarrier to transmit range codes and data from a station to a receiver where the range codes are sequentially phase modulated on a subcarrier of frequency f.sub.sc by one of its own subharmonics as follows:
REFERENCES:
patent: 3290677 (1966-12-01), Jacob
patent: 3305861 (1967-02-01), Bunce
patent: 3341845 (1967-09-01), Deman
patent: 3530467 (1970-09-01), Attwood
patent: 3530470 (1970-09-01), Sheftelman
patent: 3659292 (1972-04-01), Martin
patent: 3683279 (1972-08-01), Weinberg
patent: 3710255 (1973-01-01), Gicca
patent: 3729736 (1973-04-01), Hurd
patent: 3860921 (1975-01-01), Wood
Butman Stanley A.
Fletcher James C. Administrator of the National Aeronautics and Space
Lesh James R.
Griffin Robert L.
Manning John R.
Masinick Michael A.
McCaul Paul F.
Mott Monte F.
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