Receiving device and automatic gain control method

Details Receiving device and automatic gain control method Receiving device and automatic gain control method

2007-11-06

2007-11-06

Young, Brian (Department: 2819)

Coded data generation or conversion

Analog to or from digital conversion

Nonlinear

C341S156000

Reexamination Certificate

active

11392661

ABSTRACT:
A receiving device includes a receiver; a frequency converter; an A/D converter; and a digital signal processor, wherein the A/D converter includes a variable gain amplifier adjusting a signal level of the analog signal from the frequency converter; an A/D converting portion converting an analog signal from the variable gain amplifier into an m-bit digital signal and an n-bit digital signal and outputting the m-bit digital signal and the n-bit digital signal, the n-bit digital signal serving as an output signal to the digital signal processor; and a gain controller calculating a coarse adjustment gain of the variable gain amplifier on the basis of a power of the m-bit digital signal to control the gain of the variable gain amplifier and calculating a fine adjustment gain on the basis of a power of the n-bit digital signal to control the gain of the variable gain amplifier.

REFERENCES:
patent: 5917865 (1999-06-01), Kopmeiners et al.
patent: 6843597 (2005-01-01), Li et al.
patent: 6952132 (2005-10-01), Bhattacharjee et al.
patent: 2229333 (1990-09-01), None
patent: 10-56343 (1998-02-01), None

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