Pulse or digital communications – Receivers – Automatic gain control
Reexamination Certificate
2004-12-09
2009-06-02
Fan, Chieh M (Department: 2611)
Pulse or digital communications
Receivers
Automatic gain control
C375S316000, C375S329000, C375S331000, C455S234100, C455S232100, C455S230000, C455S245100, C330S254000
Reexamination Certificate
active
07542529
ABSTRACT:
An AGC processing portion receives a burst signal of each received frame, and measures its received power level to perform gain control of a variable gain amplifier. Unlike a conventional wireless receiving device, a digital signal from an A/D converter is directly supplied to the AGC processing portion, without passing through an FIR filter. Accordingly, the input timing for the AGC processing portion does not include a delay due to the FIR filter, and an amplitude value can be adjusted to be appropriate from the leading part of each frame, suppressing the occurrence of a reception error due to AGC processing.
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Numata Takayuki, Radio equipment and method for controlling gain thereof, Apr. 18, 2003, a translated copy of Japan Patent applicaiton 2003-115773.
Kobayashi Chikako
Miyata Takeo
Fan Chieh M
Foley & Lardner LLP
Lee Siu M
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