AUTOMATIC GAIN CONTROL CIRCUIT, SYSTEM INCLUDING SUCH CIRCUIT AND METHOD FOR ATUOMATIC GAIN CONTROL

An automatic gain control circuit including a variable gain amplifier (11 ) adapted to receive a received signal (R) and to output an amplified signal (A) to an analog to digital converter (20), and a gain controller (12) whic h is connected to said variable gain amplifier (11) for receiving said am...

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Bibliographic Details
Main Authors LINOTTE, JEAN-MICHEL, ING, ROS KIRI, BENHAMOUDA, FRANCK
Format Patent
LanguageEnglish
French
Published 02.05.2008
Subjects
BASIC ELECTRONIC CIRCUITRY
CODE CONVERSION IN GENERAL
CODING
CONTROL OF AMPLIFICATION
DECODING
ELECTRICITY
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Summary:An automatic gain control circuit including a variable gain amplifier (11 ) adapted to receive a received signal (R) and to output an amplified signal (A) to an analog to digital converter (20), and a gain controller (12) whic h is connected to said variable gain amplifier (11) for receiving said ampli fied signal (A) and for controlling a gain of said variable gain amplifier ( 11). The gain controller (12) is adapted to determine an occurrence of a thr eshold event each time the amplified signal (A) has reached a predetermined threshold, decrease the gain of the variable gain amplifier (11) at each occ urrence of a threshold event, measure a delay since the last threshold event , increase the gain of the variable gain amplifier (11) if the delay is grea ter than a delay specified value and if the gain of the variable gain amplif ier (11) is not maximum.
Bibliography:Application Number: CA20062667164