Amplifiers – With semiconductor amplifying device – Including differential amplifier
Reexamination Certificate
2007-09-04
2007-09-04
Pascal, Robert (Department: 2817)
Amplifiers
With semiconductor amplifying device
Including differential amplifier
C330S085000, C330S104000
Reexamination Certificate
active
11175374
ABSTRACT:
The present invention provides an amplifier circuit comprising a differential amplifier and a negative feedback loop circuit, in which a positive feedback loop circuit having a gain smaller than a gain of the negative feedback loop circuit is formed inside the negative feedback loop circuit.
REFERENCES:
patent: 5684433 (1997-11-01), Madni et al.
patent: 6720830 (2004-04-01), Andreou et al.
patent: 2003-283266 (2003-10-01), None
Daio Katsuhisa
Hiro Tomoyuki
Kananen Ronald P.
Nguyen Hieu
Pascal Robert
Rader & Fishman & Grauer, PLLC
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