Demodulator for an amplitude-modulated alternating signal

Details Demodulator for an amplitude-modulated alternating signal Demodulator for an amplitude-modulated alternating signal

2007-05-08

2007-05-08

Tran, Khanh (Department: 2611)

Pulse or digital communications

Receivers

Angle modulation

C329S347000

Reexamination Certificate

active

10239291

ABSTRACT:
The invention concerns a demodulator of an amplitude-modulated signal (Vdb), characterised in that it comprises a peak detecting cell (DCR) capable of extracting the reference modulating signal (Vpeak1) of the modulated signal (Vdb); a first demodulator (FE) adapted to detect the peak of the reference modulating signal (Vpeak1) to generate a high comparison threshold and locate the start of the modulation, a second demodulator (RE) adapted to detect a trough of the reference modulating signal (Vpeak1) to generate a low comparison threshold and locate the end of the modulation; a logic processing unit capable of supplying the demodulated signal (Vdemod).

REFERENCES:
patent: 4914398 (1990-04-01), Jove et al.
patent: 5025251 (1991-06-01), Mittel et al.
patent: 6051997 (2000-04-01), Yeung et al.
patent: 6393069 (2002-05-01), Shibata

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