Amplifiers – Signal feedback – Plural amplifier channels
Reexamination Certificate
2011-05-31
2011-05-31
Nguyen, Hieu P (Department: 2817)
Amplifiers
Signal feedback
Plural amplifier channels
C330S147000, C330S048000, C330S12400D
Reexamination Certificate
active
07952429
ABSTRACT:
The invention relates to an amplifier capable of delivering a plurality of output signals, these output signals being controlled by a plurality of input signals. A multiple-input and multiple-output amplifier of the invention comprises a common input terminal, 4 signal input terminals, 4 signal output terminals, a common terminal amplifier, 4 active sub-circuits and a feedback network. Each active sub-circuit has a sub-circuit input terminal connected to one of the signal input terminals, a sub-circuit output terminal connected to one of the signal output terminals and a sub-circuit common terminal. The feedback network has four C terminals and one R terminal. Each of said C terminals of the feedback network is coupled to the sub-circuit common terminal of one of said active sub-circuits. The output terminal of the common terminal amplifier is coupled to said R terminal of the feedback network.
REFERENCES:
patent: 5304950 (1994-04-01), Martin et al.
patent: 6195395 (2001-02-01), Frodsham
patent: 7099395 (2006-08-01), Sidiropoulos et al.
patent: 2896360 (2007-07-01), None
patent: 2902946 (2007-12-01), None
International Search, Jul. 28, 2009.
Broyde Frederic
Clavelier Evelyne
Barnes & Thornburg LLP
Excem
McCarthy Christine H.
Nguyen Hieu P
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