Digital FSK signal demodulator
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United States of America Patent
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-
Nov 15, 1988
Grant Date -
N/A
app pub date -
Nov 23, 1987
filing date -
Nov 23, 1987
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A demodulator for a phase coherent frequency shift keyed signal has a master clock which generates a signal having a plurality of pulses during each half of the bit internal of the FSK signal. A detector determines during which master clock pulse within several groups of X number of pulses the most transitions occur in the received signal. Based on the determined clock pulse, samples taken in each of two consecutive half-bit intervals of the FSK signal are selected for comparison to produce the demodulator output signal.
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