Amplitude deviation correction circuit

Details Amplitude deviation correction circuit Amplitude deviation correction circuit

2007-04-17

2007-04-17

Tran, Khanh (Department: 2611)

Pulse or digital communications

Receivers

Automatic baseline or threshold adjustment

C375S345000

Reexamination Certificate

active

09796467

ABSTRACT:
A novel amplitude deviation correction circuit which corrects an amplitude deviation between an I signal and a Q signal is disclosed. An average amplitude deviation between an I signal amplified by a variable gain amplifier and a Q signal amplified by another variable gain amplifier is detected by an amplitude comparison circuit, and +1 volt or −1 volt is outputted in response to a result of the detection. An integration circuit integrates the output of the amplitude comparison circuit and controls the gains of the variable gain amplifiers in response to a result of the integration.

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