Automatic gain control apparatus

Details Automatic gain control apparatus Automatic gain control apparatus

2004-11-12

2008-10-14

Liu, Shuwang (Department: 2611)

Pulse or digital communications

Receivers

Automatic gain control

C455S234100, C455S245100

Reexamination Certificate

active

07436913

ABSTRACT:
The present invention relates an automatic gain control device, which performs a high-speed gain control operation in high-speed data communication using burst signals, generates a gain code without using a memory or storage device to simplify a system configuration, and establishes a correct gain control operation. The automatic gain control apparatus includes a power detector for calculating a mean power of the output signal of the variable gain amplifier; a gain code generator for receiving a mean power from the power detector, and generating a gain code corresponding to the received mean power; and a voltage generator for calculating a difference between the gain code and a target gain code associated with the output signal of the variable gain amplifier to detect an error code, and generating a gain control voltage for compensating for the difference between the two gain codes on the basis of the detected error code.

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