Fully differential demodulator with variable gain, and...

Details Fully differential demodulator with variable gain, and... Fully differential demodulator with variable gain, and...

2008-02-15

2010-02-16

Mis, David (Department: 2817)

Demodulators

Amplitude modulation demodulator

C073S504020

Reexamination Certificate

active

07663432

ABSTRACT:
A demodulator includes input terminals, for receiving an input signal, and an amplifier stage having a gain. The input signal is amplitude-modulated and is defined by a carrier signal at a carrier frequency and by a modulating signal. The demodulator includes, moreover, a gain-control stage, coupled to the amplifier stage for varying the gain of the amplifier stage according to a sinusoid of a frequency equal to the carrier frequency, on the basis of the carrier signal.

REFERENCES:
patent: 4789837 (1988-12-01), Ridgers
patent: 5734683 (1998-03-01), Hulkko et al.
patent: 7275433 (2007-10-01), Caminada et al.
patent: 0132885 (1985-02-01), None
patent: 0209948 (1987-01-01), None

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