Automatic gain control and wireless communication device

Details Automatic gain control and wireless communication device Automatic gain control and wireless communication device

2006-06-20

2006-06-20

Bocure, Tesfaldet (Department: 2631)

Pulse or digital communications

Receivers

Automatic gain control

C455S138000, C455S240100, C455S245100

Reexamination Certificate

active

07065164

ABSTRACT:
A wireless communication apparatus includes an antenna receiving a radio signal, a variable gain amplifier amplifying the received signal using a variable gain, an analog-to-digital converter converting the amplified signal into a digital signal, a gain setting unit periodically updating the gain of the variable gain amplifier in accordance with an output from the analog-to-digital converter, and an operating mode selection unit selecting one of a plurality of operating modes characterized by different gain updating periods in accordance with the output from the analog-to-digital converter, the selected operating mode being set in the gain setting unit. With this construction, the precision in conversion by the analog-to-digital converter is maintained at a proper level when an environment for signal reception varies.

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