Reception AGC circuit

Details Reception AGC circuit Reception AGC circuit

2006-02-21

2006-02-21

Liu, Shuwang (Department: 2634)

Pulse or digital communications

Receivers

Automatic gain control

C375S364000, C375S150000, C375S141000, C375S317000, C370S311000, C704S217000

Reexamination Certificate

active

07003057

ABSTRACT:
A reception AGC circuit includes a high-speed power calculating circuit for calculating the power of an input signal at a short period, a normal power calculating circuit for calculating the power at a normal period, a circuit for receiving a power calculation result from the high-speed power calculating circuit or normal power calculating circuit to calculate a feedback amplification value, and addition amplification value setting units for self-station communication and peripheral station monitoring which receive the feedback amplification value through a switch and add the feedback amplification value to an amplifier in use. The high-speed power calculating circuit is switched to the normal power calculating circuit in accordance with the value of the difference between the power calculation result obtained by the high-speed power calculating circuit and a predetermined target reception power, and the addition amplification value setting units for self-station communication and peripheral station monitoring are selectively switched depending on whether communication with an external device is self-station communication or peripheral station monitoring.

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