Frequency shift demodulator

Details Frequency shift demodulator Frequency shift demodulator

1990-08-03

1991-05-14

Mis, David

Demodulators

Frequency shift keying or minimum shift keying demodulator

329318, 329321, 329337, 375 80, 375 88, 375102, H03D 326

Patent

active

050159615

ABSTRACT:
The invention improves the ability of the FS demodulator-circuit of an FS digital transmission system so as to withstand noise with low error count. The invention uses two different types of all pass networks and a phase measuring circuit to average random noise and enhance the desired FS frequencies.

REFERENCES:
patent: 4472816 (1984-09-01), Thompson

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