Amplifiers – With periodic switching input-output
Reexamination Certificate
2007-11-20
2007-11-20
Nguyen, Khanh Van (Department: 2817)
Amplifiers
With periodic switching input-output
C330S069000
Reexamination Certificate
active
11365514
ABSTRACT:
An amplification system capable of reducing DC offset in a baseband signal, which has first and second differential output terminals, first and second low pass filters, and first and second amplifiers. The first low pass filter filters a first input signal to thus generate a first filtered signal. The first amplifier amplifies the first input signal and the first filtered signal to thus generate a first amplified signal. The second low pass filter filters a second input signal to thus generate a second filtered signal. The second amplifier amplifies the second input signal and the second filtered signal to thus generate a second amplified signal. The system couples the first and second amplified signals at the first and the second differential output terminals to thus reduce the DC offset of a differential voltage signal output by the first and second differential output terminals.
REFERENCES:
patent: 6697611 (2004-02-01), Franca-Neto
patent: 7126419 (2006-10-01), Miyasita
patent: 7233780 (2007-06-01), Franca-Neto
Chang Ying-Tang
Wang Yao-Chi
Nguyen Khanh Van
Sunplus Technology Co. Ltd.
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