PSK telemetering synchronization and demodulation apparatus incl

Details PSK telemetering synchronization and demodulation apparatus incl PSK telemetering synchronization and demodulation apparatus incl

1973-05-09

1976-01-13

Safourek, Benedict V.

Telegraphy

Systems

Chemical

178 695R, 178 88, 179 15BS, 325322, 328 14, H04L 706

Patent

active

039327051

ABSTRACT:
A PSK synchronizer and demodulator with message coded in biphase, modulated in phase by a subcarrier, having three chains I, II, III of identical general structure, the first operating on twice the frequency f.sub.o of the subcarrier, the second on twice the clock frequency F of the bits, and the third on the clock frequency itself, forming an ambiguity eliminating device which enables the demodulated message to be restored in NRZ-C. Each of the chains includes a spectral line generator and a phase locked loop.

REFERENCES:
patent: 3646451 (1972-02-01), Shoap
patent: 3742139 (1973-06-01), Boehly

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