AUTOMATIC GAIN CONTROL CIRCUIT, SYSTEM INCLUDING SUCH CIRCUIT AND METHOD FOR AUTOMATIC 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) which is connected to said variable gain amplifier (11) for receiving said ampl...

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Bibliographic Details
Main Authors BENHAMOUDA FRANCK, ING ROS KIRI, LINOTTE JEAN MICHEL
Format Patent
LanguageEnglish
Published 20.08.2009
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) which is connected to said variable gain amplifier (11) for receiving said amplified 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 threshold event each time the amplified signal (A) has reached a predetermined threshold, decrease the gain of the variable gain amplifier (11) at each occurrence 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 greater than a delay specified value and if the gain of the variable gain amplifier (11) is not maximum. ® KIPO & WIPO 2009
Bibliography:Application Number: KR20097010378