Miscellaneous active electrical nonlinear devices – circuits – and – Specific input to output function – Combining of plural signals
Reexamination Certificate
2005-09-20
2005-09-20
Wells, Kenneth B. (Department: 2816)
Miscellaneous active electrical nonlinear devices, circuits, and
Specific input to output function
Combining of plural signals
C455S333000
Reexamination Certificate
active
06946895
ABSTRACT:
An amplifier circuit comprises a differential amplifier configured by a differential pair of transistors, a common emitter amplifier connected in parallel to the differential amplifier and configured by a pair of common-emitter configuration transistors, input and output terminals which are common to the differential amplifier and the common emitter amplifier, and a bias controller connected to the differential amplifier and the common emitter amplifier and configured to control a bias of at least one of the differential amplifier and the common emitter amplifier.
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Hiroshi Tanimoto, et al., “Realization of a 1-V Active Filter Using a Linearization Technique Employing Plurality of Emitter-Coupled Pairs”, IEEE Journal of Solid-State Circuits, vol. 26, No. 7, Jul. 1991, pp. 937-945.
Otaka Shoji
Umeda Toshiyuki
Kabushiki Kaisha Toshiba
Wells Kenneth B.
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