Pulse or digital communications – Receivers – Angle modulation
Reexamination Certificate
2005-04-12
2005-04-12
Bayard, Emmanuel (Department: 2631)
Pulse or digital communications
Receivers
Angle modulation
C375S316000
Reexamination Certificate
active
06879647
ABSTRACT:
A radio receiver (10) adapted to receive an AM-MSK modulated carrier signal includes an envelope detector (24) and a transformer (28) which restores the real signal to complex MSK format. A Doppler remover (34) removes any Doppler shift of the MSK due to relative motion of the transmitter and receiver (10). A sample rate reducer (56) may reduce the sample rate used in the Doppler remover (34) to the transmitted symbol rate used during the modulation process.
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Bayard Emmanuel
Northrop Grumman Corporation
Tarolli, Sundheim Covell & Tummino L.L.P.
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