Amplifiers – With semiconductor amplifying device – Including d.c. feedback bias control for stabilization
Reexamination Certificate
2011-07-19
2011-07-19
Nguyen, Patricia (Department: 2817)
Amplifiers
With semiconductor amplifying device
Including d.c. feedback bias control for stabilization
C330S257000, C330S302000
Reexamination Certificate
active
07982542
ABSTRACT:
A circuit comprises a first amplifier portion and a second amplifier portion. The first amplifier portion includes first and second transistors coupled together in a common-base configuration. A current mirror is coupled to the first and second transistors. A first filter is coupled between a first input and the first and second transistors. The second amplifier portion includes third and fourth transistors coupled together in a common-base configuration. First and second current sources are coupled to the third and fourth transistors. A second filter is coupled between a second input and the control electrodes of the third and fourth transistors, wherein the first and second filters are coupled together.
REFERENCES:
patent: 5412309 (1995-05-01), Ueunten
patent: 5416645 (1995-05-01), Fukuyama
patent: 5515003 (1996-05-01), Kimura
patent: 6111463 (2000-08-01), Kimura
patent: 6297699 (2001-10-01), Murray et al.
patent: 6639473 (2003-10-01), Kobayashi
patent: 6724260 (2004-04-01), Varner et al.
patent: 6965266 (2005-11-01), Can
patent: 7602246 (2009-10-01), Zhang et al.
patent: 7724092 (2010-05-01), Quan et al.
Clingan, Jr. James L.
Freescale Semiconductor Inc.
Hill Daniel D.
Nguyen Patricia
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