Auto gain controller and control method thereof

Details Auto gain controller and control method thereof Auto gain controller and control method thereof

2008-11-26

2011-10-11

Williams, Howard (Department: 2819)

Telecommunications

Receiver or analog modulated signal frequency converter

Local control of receiver operation

C375S345000, C455S250100

Reexamination Certificate

active

08036618

ABSTRACT:
An auto gain controller (AGC) and a control method thereof are provided. An input signal is amplified by a radio frequency (RF) amplifier and an intermediate frequency (IF) amplifier. When strength of the input signal is lower than a threshold, a gain curve of the RF amplifier is lowered while a gain curve of the IF amplifier is raised. When the strength of the input signal is greater than the threshold, a takeover point (TOP) of the IF amplifier is changed from a first takeover point to a second takeover point.

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