Amplifiers – With periodic switching input-output
Reexamination Certificate
2007-07-03
2007-07-03
Choe, Henry (Department: 2817)
Amplifiers
With periodic switching input-output
C330S259000
Reexamination Certificate
active
10825781
ABSTRACT:
Apparatus, systems, and methods implementing techniques for reducing the variation of a DC offset are described. An input signal is amplified to produce an intermediate signal. The intermediate signal is processed to produce a feedback signal and an output signal, where the output signal has a DC offset that varies with a varying parameter of the circuitry used to process the intermediate signal. Variation of the DC offset of the output signal is reduced using the feedback signal. In one implementation, the circuitry used to process the intermediate signal is a variable-gain amplifier circuit, and the DC offset of the output signal varies with a gain of the variable-gain amplifier.
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Chien George
Cui Donghong
Hsu Yungping
Song Yonghua
Tang Hsiao-Cheng
Choe Henry
Marvell International Ltd.
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