Amplifiers – With plural amplifier channels – Redundant amplifier circuits
Reexamination Certificate
2007-04-03
2007-04-03
Mottola, Steven J. (Department: 2817)
Amplifiers
With plural amplifier channels
Redundant amplifier circuits
C330S107000
Reexamination Certificate
active
11292589
ABSTRACT:
An amplifier circuit includes a first amplifier module that includes an input and an output and that has first gain, a first bandwidth and a first output impedance. A second amplifier module includes an input that communicates with the input of the first amplifier module and an output and has a second gain that is less than the first gain, a second bandwidth that is greater than the first bandwidth and an output impedance that is less than the first output impedance. A capacitance communicates with the output of the second amplifier module and an output of the first amplifier module. The second amplifier module includes an operational transconductance amplifier.
REFERENCES:
patent: 3079568 (1963-02-01), Werth
patent: 3605031 (1971-09-01), Tongue
patent: 5121075 (1992-06-01), Roach
patent: 6002299 (1999-12-01), Thomsen
patent: 6208206 (2001-03-01), Leung et al.
patent: 6842068 (2005-01-01), Perrier et al.
patent: 6930544 (2005-08-01), Yokoyama
Application of the Operational Transconductance Amplifier (OTA) to Voltage-controlled Amplifiers and Active Filters; W. Grise, Department of IET, Morehead State University, Morehead, KY; 1998; http://engr.nmsu.edu/-etti/winter98/electronics/grise/wrg.html; 10 pages.
Aram Farbod
Sutardja Sehat
Marvell World Trade International
Mottola Steven J.
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