FSK demodulation circuit
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United States of America Patent
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-
Sep 26, 1989
Grant Date -
N/A
app pub date -
Aug 29, 1988
filing date -
Aug 29, 1987
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
An FSK demodulation circuit which receives as input an FSK modulated reception signal, obtains two quadrature pulse trains, i.e., a first pulse train and a second pulse train, from a phase detection circuit, is provided with at least two sampling means which use the edge of one of the pulse trains and sample the logic of the other pulse train, produces two or more sample outputs at different timings, and determines the logic of the reproduced data from a combination of the logics '1' and '0' of the sample outputs.
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