Pulse or digital communications – Receivers – Particular pulse demodulator or detector
Reexamination Certificate
2007-06-12
2007-06-12
Corrielus, Jean B. (Department: 2611)
Pulse or digital communications
Receivers
Particular pulse demodulator or detector
C375S324000
Reexamination Certificate
active
10418214
ABSTRACT:
A radio system demodulates a continuous phase modulation waveform with a pulse count demodulator. The use of a pulse count demodulator reduces the receiver complexity and reduces power consumption, which makes such a system well suited for hand held or mobile units. The pulse count demodulator delays the CPM signal by a time increment t0, and subtracts the delayed signal from the original signal creating a difference signal. The difference signal is rectified and low pass filtered resulting in an average signal representing the phase change. In non-square wave CPM signals, the signal is first clipped removing the amplitude information.
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Hessel Clifford
Norris James Anthony
Bolourchi Nader
Corrielus Jean B.
Duane Morris LLP
Harris Corporation
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