Amplifiers – Combined with automatic amplifier disabling switch means
Reexamination Certificate
2008-02-26
2010-02-02
Nguyen, Patricia (Department: 2817)
Amplifiers
Combined with automatic amplifier disabling switch means
C330S12400D, C330S12400D, C330S278000
Reexamination Certificate
active
07656227
ABSTRACT:
Methods and apparatus control the gain of an RF amplifier. In an example, the RF amplifier is biased for low distortion. The bias is not changed to adjust gain. Rather, the amplifier's gain is controlled by selectively activating or deactivating RF amplifier cells of the RF amplifier. This individual RF amplifier cells to be biased for good linearity and relatively good spectral performance, while permitting gain control.
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Beaudoin Francis
McAdam Matthew
Knobbe Martens Olson & Bear LLP
Nguyen Patricia
PMC-Sierra Inc.
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