Frequency-modulated signal receiver with digital demodulator

Details Frequency-modulated signal receiver with digital demodulator Frequency-modulated signal receiver with digital demodulator

2008-05-27

2008-05-27

Ahn, Sam K. (Department: 2611)

Pulse or digital communications

Receivers

Angle modulation

Reexamination Certificate

active

07379512

ABSTRACT:
A receiver of a frequency-modulated signal is provided. The receiver includes a frequency-transposition unit for lowering the frequency of the frequency-modulated signal, and a digital demodulator for regenerating a digital signal from the frequency-transposed signal. The frequency-transposition unit includes a local oscillator for generating a local oscillator signal used in lowering the frequency of the frequency-modulated signal. The frequency-transposed signal is sampled in the digital demodulator at the rate of a sampling signal, and the sampling signal is generated by the local oscillator of the frequency-transposition unit. In a preferred embodiment, the local oscillator includes at least one frequency-divider circuit that delivers the sampling signal. Also provided is a method for regenerating a digital signal from a frequency-modulated signal.

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Preliminary Search Report for French Patent Application No. 0103788 dated Nov. 21, 2001.

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