Amplifiers – With semiconductor amplifying device – Including particular biasing arrangement
Reexamination Certificate
2005-08-30
2005-08-30
Pascal, Robert (Department: 2817)
Amplifiers
With semiconductor amplifying device
Including particular biasing arrangement
C330S285000
Reexamination Certificate
active
06937102
ABSTRACT:
A power amplifier circuit whose performance is optimized by operating its stages in substantially close to a Class B mode by reducing quiescent current during low driver signal levels. As the driver signal amplitude increases, the operation of the amplifier is configured to dynamically adjust to be in a Class AB mode, thereby increasing the power efficiency of the overall circuit at kiw drive levels. A further enhancement to the power amplifier circuit includes a temperature compensation circuit to adjust the bias of the amplifier so as to stabilize the performance in a wide temperature range.
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Bayruns Robert
Lopez Osvaldo Jorge
Singh Mahendra
Anadigics Inc.
Morgan & Lewis & Bockius, LLP
Nguyen Khanh Van
Pascal Robert
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